Pub Date : 2025-03-01Epub Date: 2025-02-11DOI: 10.1016/j.colcom.2025.100820
Jing Ma , Yu Tian , Yibiao Chen , Xiaodan Zhang , Chenyu Ding , Zhangya Lin
Ischemia-reperfusion injury is a major threat in ischemic stroke, with limited treatment options. Edaravone, a first-line drug, has multiple limitations, and the narrow time window for reperfusion therapy complicates treatment. This study reports a nanoparticle drug designed to mitigate ischemia-reperfusion injury by targeting inflammation. The drug is made of mesoporous silica (SiO2) loaded with the CO-releasing molecule CORM-401 and coated with a macrophage membrane (MM) shell. The nanoparticles effectively cross the blood-brain barrier and target ischemic brain lesions. In vitro and in vivo studies show that SiO2@MM@CORM-401 scavenges reactive oxygen species (ROS), promotes anti-inflammatory factor release, and inhibits pro-inflammatory factors. Additionally, CO helps prevent ferroptosis in the ischemic penumbra, offering a potential mechanism for alleviating ischemic stroke and providing a novel therapeutic approach.
{"title":"Loaded endogenous CO mimetic nanomedicine mitigates ischemic stroke ischemia-reperfusion injury","authors":"Jing Ma , Yu Tian , Yibiao Chen , Xiaodan Zhang , Chenyu Ding , Zhangya Lin","doi":"10.1016/j.colcom.2025.100820","DOIUrl":"10.1016/j.colcom.2025.100820","url":null,"abstract":"<div><div>Ischemia-reperfusion injury is a major threat in ischemic stroke, with limited treatment options. Edaravone, a first-line drug, has multiple limitations, and the narrow time window for reperfusion therapy complicates treatment. This study reports a nanoparticle drug designed to mitigate ischemia-reperfusion injury by targeting inflammation. The drug is made of mesoporous silica (SiO2) loaded with the CO-releasing molecule CORM-401 and coated with a macrophage membrane (MM) shell. The nanoparticles effectively cross the blood-brain barrier and target ischemic brain lesions. In vitro and in vivo studies show that SiO2@MM@CORM-401 scavenges reactive oxygen species (ROS), promotes anti-inflammatory factor release, and inhibits pro-inflammatory factors. Additionally, CO helps prevent ferroptosis in the ischemic penumbra, offering a potential mechanism for alleviating ischemic stroke and providing a novel therapeutic approach.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"65 ","pages":"Article 100820"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01Epub Date: 2025-02-03DOI: 10.1016/j.colcom.2025.100819
Wenxian Wu , Fanglei Yu , Peijun Gong , Jiecheng Cui
The abuse of psychoactive substances has become a serious risk to the public health and social safety. Developing strategies capable of facile discriminating numerous psychoactive substances is essential to mitigate this risk. Herein, a poly(ionic liquid) (PIL)-based photonic sphere was developed. By the synergistical integration of the multiple non-covalent molecular interaction involved in the PIL and the self-reporting optical signal of the photonic structure, the obtained PIL photonic sphere exhibit excellent power toward the discrimination of psychoactive substances. Specifically, through judiciously selecting the counterion of PIL, as much as 10 psychoactive substances was facilely and efficiently discriminated by the PIL photonic sphere. Our results indicate that the PIL photonic sphere is a very powerful tool for discriminating psychoactive substances, and holds promising potential for applications involving complex multi-analyte systems.
{"title":"Facilely discrimination of 10 psychoactive substances by poly(ionic liquid) photonic sphere platform","authors":"Wenxian Wu , Fanglei Yu , Peijun Gong , Jiecheng Cui","doi":"10.1016/j.colcom.2025.100819","DOIUrl":"10.1016/j.colcom.2025.100819","url":null,"abstract":"<div><div>The abuse of psychoactive substances has become a serious risk to the public health and social safety. Developing strategies capable of facile discriminating numerous psychoactive substances is essential to mitigate this risk. Herein, a poly(ionic liquid) (PIL)-based photonic sphere was developed. By the synergistical integration of the multiple non-covalent molecular interaction involved in the PIL and the self-reporting optical signal of the photonic structure, the obtained PIL photonic sphere exhibit excellent power toward the discrimination of psychoactive substances. Specifically, through judiciously selecting the counterion of PIL, as much as 10 psychoactive substances was facilely and efficiently discriminated by the PIL photonic sphere. Our results indicate that the PIL photonic sphere is a very powerful tool for discriminating psychoactive substances, and holds promising potential for applications involving complex multi-analyte systems.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"65 ","pages":"Article 100819"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01Epub Date: 2025-02-25DOI: 10.1016/j.colcom.2025.100826
Radhika Joshi , Swapnil Sharma , Nemat Ali , Ghazala Muteeb , Mohammad Fareed , Prawez Alam , Devesh U. Kapoor , Bhupendra G. Prajapati
Nanoprisms, a distinctive class of nanostructures, have garnered significant attention in nanomedicine due to their exceptional optical, electronic, and physicochemical properties. This review highlights the diagnostic and therapeutic potential of nanoprisms, emphasizing their transformative role in modern healthcare. First, it provides an overview of current diagnostic and therapeutic strategies within nanomedicine and underscores the unique attributes of nanoprisms. The synthesis and functionalization of nanoprisms, including seed-mediated growth and surface modification techniques like PEGylation and ligand conjugation, are discussed, showcasing how size, shape, and material composition influence their applications. Their diagnostic capabilities span bioimaging techniques, such as plasmonic and photoacoustic imaging, molecular diagnostics, and pathogen detection. In therapeutics, nanoprisms excel in photothermal cancer therapy, targeted drug delivery, and antimicrobial applications, including combating multidrug-resistant strains. Finally, the review addresses existing challenges and future opportunities in advancing nanoprism-based technologies, paving the way for innovative solutions in diagnostics and therapy.
{"title":"Harnessing the potential of nanoprisms for diagnostic and therapeutic applications","authors":"Radhika Joshi , Swapnil Sharma , Nemat Ali , Ghazala Muteeb , Mohammad Fareed , Prawez Alam , Devesh U. Kapoor , Bhupendra G. Prajapati","doi":"10.1016/j.colcom.2025.100826","DOIUrl":"10.1016/j.colcom.2025.100826","url":null,"abstract":"<div><div>Nanoprisms, a distinctive class of nanostructures, have garnered significant attention in nanomedicine due to their exceptional optical, electronic, and physicochemical properties. This review highlights the diagnostic and therapeutic potential of nanoprisms, emphasizing their transformative role in modern healthcare. First, it provides an overview of current diagnostic and therapeutic strategies within nanomedicine and underscores the unique attributes of nanoprisms. The synthesis and functionalization of nanoprisms, including seed-mediated growth and surface modification techniques like PEGylation and ligand conjugation, are discussed, showcasing how size, shape, and material composition influence their applications. Their diagnostic capabilities span bioimaging techniques, such as plasmonic and photoacoustic imaging, molecular diagnostics, and pathogen detection. In therapeutics, nanoprisms excel in photothermal cancer therapy, targeted drug delivery, and antimicrobial applications, including combating multidrug-resistant strains. Finally, the review addresses existing challenges and future opportunities in advancing nanoprism-based technologies, paving the way for innovative solutions in diagnostics and therapy.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"65 ","pages":"Article 100826"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The interaction between macroscopic fluid flow and nanoscale forces has resulted in the formation of long-range assemblies through evaporation-induced self-assembly. Anisotropic gold nanorods (AuNR) can form disordered, smectic, or vertically ordered long-range structures, but controlling their assembly remains a challenge and requires a deeper understanding of fundamental interaction mechanisms. In this work, we established a correlation between the in situ drying profiles, measured using an optical tensiometer, and deposit pattern, imaged ex situ using electron microscopy. Increasing particle concentration induced a transition from coffee-ring to uniform deposition at the microscale, while nanoscale structures shifted from isotropic/smectic to vertically aligned crystalline AuNRs. The interplay of capillary and Marangoni flow influences assembly at both macro and nanoscales, with the deposition process and nanoparticle ordering being highly sensitive to interparticle and nanoparticle-substrate interactions. By systematically studying key parameters, we aim to develop a comprehensive framework for the rational design and fabrication of nanomaterials with precisely controlled structure and properties.
{"title":"Role of fluid forces and depletion interactions in directing assembly of aqueous gold nanorods on hydrophobic surfaces","authors":"N.P. Vaisakh , Suman Bhattacharjee , Sunita Srivastava","doi":"10.1016/j.colcom.2025.100825","DOIUrl":"10.1016/j.colcom.2025.100825","url":null,"abstract":"<div><div>The interaction between macroscopic fluid flow and nanoscale forces has resulted in the formation of long-range assemblies through evaporation-induced self-assembly. Anisotropic gold nanorods (AuNR) can form disordered, smectic, or vertically ordered long-range structures, but controlling their assembly remains a challenge and requires a deeper understanding of fundamental interaction mechanisms. In this work, we established a correlation between the <em>in situ</em> drying profiles, measured using an optical tensiometer, and deposit pattern, imaged <em>ex situ</em> using electron microscopy. Increasing particle concentration induced a transition from coffee-ring to uniform deposition at the microscale, while nanoscale structures shifted from isotropic/smectic to vertically aligned crystalline AuNRs. The interplay of capillary and Marangoni flow influences assembly at both macro and nanoscales, with the deposition process and nanoparticle ordering being highly sensitive to interparticle and nanoparticle-substrate interactions. By systematically studying key parameters, we aim to develop a comprehensive framework for the rational design and fabrication of nanomaterials with precisely controlled structure and properties.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"65 ","pages":"Article 100825"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-03-01Epub Date: 2025-02-18DOI: 10.1016/j.colcom.2025.100823
Iaan Cho , Jiho Yang , Shimeles Shumi Raya , Bonggeun Shong
Two-dimensional (2D) materials, such as molybdenum disulfide (MoS2), have gained considerable attention for future electronic applications because of their exceptional characteristics with atomic-scale thickness. However, uniform deposition of dielectric materials such as aluminum oxide (Al2O3) on 2D materials remains challenging because of the chemically inert nature of these surfaces. In this study, the adsorption behaviors of aluminum ALD precursors on MoS2 substrates were investigated using density functional theory (DFT) calculations. The results show that the physisorption of the popular trimethylaluminum (TMA) precursor shows low thermodynamic stability, whereas larger molecules such as aluminum triisopropoxide (ATIP) and triisobutylaluminum (TIBA) display greater stability for physisorption, suggesting better nucleation in ALD. While physisorption of these precursors is more stable on the basal plane than on the edge sites of MoS2, edge sites may be preferred for dissociative chemisorption.
{"title":"Adsorption of aluminum precursors on MoS2 toward nucleation of atomic layer deposition","authors":"Iaan Cho , Jiho Yang , Shimeles Shumi Raya , Bonggeun Shong","doi":"10.1016/j.colcom.2025.100823","DOIUrl":"10.1016/j.colcom.2025.100823","url":null,"abstract":"<div><div>Two-dimensional (2D) materials, such as molybdenum disulfide (MoS<sub>2</sub>), have gained considerable attention for future electronic applications because of their exceptional characteristics with atomic-scale thickness. However, uniform deposition of dielectric materials such as aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) on 2D materials remains challenging because of the chemically inert nature of these surfaces. In this study, the adsorption behaviors of aluminum ALD precursors on MoS<sub>2</sub> substrates were investigated using density functional theory (DFT) calculations. The results show that the physisorption of the popular trimethylaluminum (TMA) precursor shows low thermodynamic stability, whereas larger molecules such as aluminum triisopropoxide (ATIP) and triisobutylaluminum (TIBA) display greater stability for physisorption, suggesting better nucleation in ALD. While physisorption of these precursors is more stable on the basal plane than on the edge sites of MoS<sub>2</sub>, edge sites may be preferred for dissociative chemisorption.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"65 ","pages":"Article 100823"},"PeriodicalIF":4.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-01Epub Date: 2024-12-04DOI: 10.1016/j.colcom.2024.100810
Nuan Li , Xiaofeng Han , Xiaoli Mai , Peng Wang , Fangxu Wang , Linyuan Wu , Yuanyuan Xie , Bin Wang
Recent findings have sparked great interest in MagR/Cry4 protein that underpin animal magnetoreception. We tried to make progress in characterizing the Columba livia clMagR/clCry4, and connecting its properties to biological impacts. Throughout natural evolution, new functions of protein were never constructed from scratch, but from pre-existing parts. The clMagR/clCry4 was certainly not an exception. By employing synthetic biology, protein heterologous expression approach allowed protein function to be borrowed from nature to study their new traits. We introduced clMagR/clCry4 into the natural bacteria constructing the recombinant bacteria that perform biomineralization process. Our current work efforts were focused on investigating iron biomineralization in clMagR/clCry4 using electron microscopy. This is only one study, thus far, that describes clMagR/clCry4 deem as a likely candidate as iron biomineralization protein. Notably, iron biomineralization brings clMagR/clCry4 closer to its potential magnetoreception. Additionally, the obtained iron biominerals have shown a great promise to serve as T2 contrast agents for MRI application.
{"title":"Iron biomineralization by mediation of clMagR/clCry4 protein contribute to T2 contrast enhanced in MRI","authors":"Nuan Li , Xiaofeng Han , Xiaoli Mai , Peng Wang , Fangxu Wang , Linyuan Wu , Yuanyuan Xie , Bin Wang","doi":"10.1016/j.colcom.2024.100810","DOIUrl":"10.1016/j.colcom.2024.100810","url":null,"abstract":"<div><div>Recent findings have sparked great interest in MagR/Cry4 protein that underpin animal magnetoreception. We tried to make progress in characterizing the <em>Columba livia</em> clMagR/clCry4, and connecting its properties to biological impacts. Throughout natural evolution, new functions of protein were never constructed from scratch, but from pre-existing parts. The clMagR/clCry4 was certainly not an exception. By employing synthetic biology, protein heterologous expression approach allowed protein function to be borrowed from nature to study their new traits. We introduced clMagR/clCry4 into the natural bacteria constructing the recombinant bacteria that perform biomineralization process. Our current work efforts were focused on investigating iron biomineralization in clMagR/clCry4 using electron microscopy. This is only one study, thus far, that describes clMagR/clCry4 deem as a likely candidate as iron biomineralization protein. Notably, iron biomineralization brings clMagR/clCry4 closer to its potential magnetoreception. Additionally, the obtained iron biominerals have shown a great promise to serve as <em>T</em><sub>2</sub> contrast agents for MRI application.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"64 ","pages":"Article 100810"},"PeriodicalIF":4.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-01Epub Date: 2025-01-23DOI: 10.1016/j.colcom.2025.100818
Yang Zheng , Junwen Wang , Jianwen Wang , Yulong Li , Zhenqi Jiang
Insects represent one of the most ancient and diverse groups of organisms. Over 400 million years of evolution, their cuticles have evolved into highly optimized natural biomaterials that achieve a unique balance of lightweight structure, high strength, and elasticity. The remarkable properties of insect cuticles have inspired the development of biomimetic materials. In this review, we explore the structural organization, material properties, and key molecular components of insect cuticles, emphasizing their potential applications in both structural and molecular bionics. Special attention is given to areas such as protective coating, tissue engineering, and other biomaterials that demand exceptional elasticity or durability. Finally, we highlight future research directions on the molecular assembly mechanisms of insect cuticles, aiming to advance the design of high-performance, sustainable materials.
{"title":"Insect cuticle: A source of inspiration for biomimetic Interface material design","authors":"Yang Zheng , Junwen Wang , Jianwen Wang , Yulong Li , Zhenqi Jiang","doi":"10.1016/j.colcom.2025.100818","DOIUrl":"10.1016/j.colcom.2025.100818","url":null,"abstract":"<div><div>Insects represent one of the most ancient and diverse groups of organisms. Over 400 million years of evolution, their cuticles have evolved into highly optimized natural biomaterials that achieve a unique balance of lightweight structure, high strength, and elasticity. The remarkable properties of insect cuticles have inspired the development of biomimetic materials. In this review, we explore the structural organization, material properties, and key molecular components of insect cuticles, emphasizing their potential applications in both structural and molecular bionics. Special attention is given to areas such as protective coating, tissue engineering, and other biomaterials that demand exceptional elasticity or durability. Finally, we highlight future research directions on the molecular assembly mechanisms of insect cuticles, aiming to advance the design of high-performance, sustainable materials.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"64 ","pages":"Article 100818"},"PeriodicalIF":4.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical materials with imaging and phototherapy functionalities have offered promising perspectives for precise tumor treatment. Among these materials, boron-dipyrromethene (BODIPY) photosensitizers have presented potential for cancer theranostics because of their long wavelength absorption/fluorescence, tunable reactive oxygen species quantum yield, excellent photostability, and good biocompatibility. The development of nanotechnology in combination with BODIPY provided researchers with nanomedicines passively targeting solid tumors via enhanced penetration and retention effect, which greatly improved the efficacy of cancer photo-theranostics. In this review, we summarize our contributions for the development of BODIPY nanomedicine for cancer imaging and phototherapy. We firstly introduce our comprehensive routes for BODIPY synthesis and the preparation strategies of BODIPY nanomedicine. Thereafter, we give an in-depth discussion on the photo physicochemical properties of BODIPY nanomedicines, focusing on their applications in fluorescence/photothermal/photoacoustic imaging, photodynamic therapy, phototherapy, and combined phototherapy/vascular disruption therapy. Lastly, we look at the perspectives and challenges for the development of next-generation BODIPY nanomedicines.
{"title":"BODIPY based nanomedicine for cancer imaging and phototherapy","authors":"Dapeng Chen , Tian Zhang , Xiaochen Dong , Xiaozhou Mou","doi":"10.1016/j.colcom.2024.100816","DOIUrl":"10.1016/j.colcom.2024.100816","url":null,"abstract":"<div><div>Optical materials with imaging and phototherapy functionalities have offered promising perspectives for precise tumor treatment. Among these materials, boron-dipyrromethene (BODIPY) photosensitizers have presented potential for cancer theranostics because of their long wavelength absorption/fluorescence, tunable reactive oxygen species quantum yield, excellent photostability, and good biocompatibility. The development of nanotechnology in combination with BODIPY provided researchers with nanomedicines passively targeting solid tumors via enhanced penetration and retention effect, which greatly improved the efficacy of cancer photo-theranostics. In this review, we summarize our contributions for the development of BODIPY nanomedicine for cancer imaging and phototherapy. We firstly introduce our comprehensive routes for BODIPY synthesis and the preparation strategies of BODIPY nanomedicine. Thereafter, we give an in-depth discussion on the photo physicochemical properties of BODIPY nanomedicines, focusing on their applications in fluorescence/photothermal/photoacoustic imaging, photodynamic therapy, phototherapy, and combined phototherapy/vascular disruption therapy. Lastly, we look at the perspectives and challenges for the development of next-generation BODIPY nanomedicines.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"64 ","pages":"Article 100816"},"PeriodicalIF":4.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We investigated how structures formed by hydrophobic superparamagnetic Fe3O4 nanoparticles (NPs) at air-water interfaces could be changed, in order to achieve films with the desired structure. NP films were prepared on water using the Langmuir trough, and deposited onto glass substrates. The effect of the NP spreading solution concentration (CNP) and the magnetic field strength on the NP aggregation were determined from surface pressure-area/particle isotherms and Atomic Force Microscope images. In the absence of a magnetic field, the NPs aggregated to form large and heterogeneous domains. The size and non-homogeneity of the domains increased as CNP increased, a result explained by increasing attractive hydrophobic interactions. A magnetic field decreased the size and non-homogeneity of these domains, a result explained by a directional attractive magnetic force. The NP film structure depended on CNP and the magnetic field strength. Structural changes by the magnetic field became more visible as CNP was increased.
{"title":"Use of nanoparticle concentration and magnetic fields to control the structures of superparamagnetic Fe3O4 nanoparticle Langmuir films","authors":"Cathy E. McNamee , Daisuke Usui , Yuto Yamada , Hiroaki Shigekura , Shinpei Yamamoto","doi":"10.1016/j.colcom.2025.100817","DOIUrl":"10.1016/j.colcom.2025.100817","url":null,"abstract":"<div><div>We investigated how structures formed by hydrophobic superparamagnetic Fe<sub>3</sub>O<sub>4</sub> nanoparticles (NPs) at air-water interfaces could be changed, in order to achieve films with the desired structure. NP films were prepared on water using the Langmuir trough, and deposited onto glass substrates. The effect of the NP spreading solution concentration (<em>C</em><sub><em>NP</em></sub>) and the magnetic field strength on the NP aggregation were determined from surface pressure-area/particle isotherms and Atomic Force Microscope images. In the absence of a magnetic field, the NPs aggregated to form large and heterogeneous domains. The size and non-homogeneity of the domains increased as <em>C</em><sub><em>NP</em></sub> increased, a result explained by increasing attractive hydrophobic interactions. A magnetic field decreased the size and non-homogeneity of these domains, a result explained by a directional attractive magnetic force. The NP film structure depended on <em>C</em><sub><em>NP</em></sub> and the magnetic field strength. Structural changes by the magnetic field became more visible as <em>C</em><sub><em>NP</em></sub> was increased.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"64 ","pages":"Article 100817"},"PeriodicalIF":4.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-01Epub Date: 2024-12-04DOI: 10.1016/j.colcom.2024.100812
Shi Lan , Mengnan Chu , Tingrui Yuan , Yanyang Duan , Shuang Zhao , Xianliang Sheng , Alideertu Dong
The past few decades have witnessed plenty of research activities in advanced adsorbents for iodine pollutant treatment, but little attention has been paid to the reutilization of them. Herein, we report on superficial pyrrolidone-rich polymer nanoparticles (i.e., PMP NPs) as integrated sustainable materials for the effective removal of iodine from waste, coupled with their reutilization in antibacterial-associated areas. The pyrrolidone groups on the surface of PMP NPs served as adsorbing sites for capturing iodine and having the special capability of desorbing iodine in the presence of starch or bacteria. The as-captured iodine showed excellent in vitro antibacterial ability against 107 CFU·mL−1 of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). We believed that this “turning waste into treasure” strategy based on the synergism of iodine adsorption and antibacterial utilization should have great potential for environmental remediation and public healthcare.
{"title":"Construction of superficial pyrrolidone-rich polymer nanoparticles as integrated sustainable materials for iodine adsorption and bacteria eradication","authors":"Shi Lan , Mengnan Chu , Tingrui Yuan , Yanyang Duan , Shuang Zhao , Xianliang Sheng , Alideertu Dong","doi":"10.1016/j.colcom.2024.100812","DOIUrl":"10.1016/j.colcom.2024.100812","url":null,"abstract":"<div><div>The past few decades have witnessed plenty of research activities in advanced adsorbents for iodine pollutant treatment, but little attention has been paid to the reutilization of them. Herein, we report on superficial pyrrolidone-rich polymer nanoparticles (<em>i.e.</em>, PMP NPs) as integrated sustainable materials for the effective removal of iodine from waste, coupled with their reutilization in antibacterial-associated areas. The pyrrolidone groups on the surface of PMP NPs served as adsorbing sites for capturing iodine and having the special capability of desorbing iodine in the presence of starch or bacteria. The as-captured iodine showed excellent <em>in vitro</em> antibacterial ability against 10<sup>7</sup> CFU·mL<sup>−1</sup> of <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus aureus</em> (<em>S. aureus</em>). We believed that this “turning waste into treasure” strategy based on the synergism of iodine adsorption and antibacterial utilization should have great potential for environmental remediation and public healthcare.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"64 ","pages":"Article 100812"},"PeriodicalIF":4.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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