Element doping and construction of heterojunction composites were the most common ways to enhance g-C3N4, which were very attractive in achieving high photocatalytic activity. In this study, 2D nanosheet structure BCN was obtained by doping B atom with graphite carbon nitride. Then, Ti MOF was loaded on BCN to obtain a Z-scheme heterojunction composite TBCN through the calcination. Under simulated sunlight, the photocatalytic hydrogen production rate of TBCN heterostructure was 1242 μmol h-1/g, which was 2.2 times than that of BCN and 9.34 times that of bulk graphitic carbon nitrogen-containing (GCN), respectively. The experimental results showed that the construction of Z-scheme heterojunction composite (TBCN) could effectively adjust the material band gap position, expanded the light absorption range, enhanced electron transfer and inhibited the electron-hole recombination, which were crucial for efficient photocatalysis. This study not only provided a strategy for constructing heterojunction composites in the field of g-C3N4 photocatalytic hydrogen evolution, but also deeply analyzed the electron migration direction and the reasons for enhancing carrier separation in the Z-type heterojunction scheme, which provided potential help for subsequent researchers.
元素掺杂和构建异质结复合材料是增强 g-C3N4 的最常见方法，这对实现高光催化活性非常有吸引力。本研究通过在氮化石墨碳中掺杂 B 原子获得了二维纳米片结构 BCN。然后，在 BCN 上负载 Ti MOF，通过煅烧得到 Z 型异质结复合 TBCN。在模拟阳光下，TBCN异质结构的光催化产氢率为1242 μmol h-1/g，分别是BCN的2.2倍和块状含石墨碳氮（GCN）的9.34倍。实验结果表明，构建 Z 型异质结复合材料（TBCN）可有效调整材料带隙位置、扩大光吸收范围、增强电子转移和抑制电子-空穴重组，这些对高效光催化至关重要。该研究不仅为g-C3N4光催化氢气进化领域异质结复合材料的构建提供了策略，而且深入分析了Z型异质结方案中电子迁移方向和载流子分离增强的原因，为后续研究人员提供了潜在的帮助。
{"title":"The Z-scheme of 2D Structured BCN and Ti MOF Heterojunction High-Efficiency Photocatalytic Hydrogen Evolution","authors":"Cong Liu, Liuxue Zhang, Xuetong Xu, Jiaolong Qiao, Xu Jia, Fuying Wang, Xiulian Wang","doi":"10.1039/d4nj02339k","DOIUrl":"https://doi.org/10.1039/d4nj02339k","url":null,"abstract":"Element doping and construction of heterojunction composites were the most common ways to enhance g-C3N4, which were very attractive in achieving high photocatalytic activity. In this study, 2D nanosheet structure BCN was obtained by doping B atom with graphite carbon nitride. Then, Ti MOF was loaded on BCN to obtain a Z-scheme heterojunction composite TBCN through the calcination. Under simulated sunlight, the photocatalytic hydrogen production rate of TBCN heterostructure was 1242 μmol h-1/g, which was 2.2 times than that of BCN and 9.34 times that of bulk graphitic carbon nitrogen-containing (GCN), respectively. The experimental results showed that the construction of Z-scheme heterojunction composite (TBCN) could effectively adjust the material band gap position, expanded the light absorption range, enhanced electron transfer and inhibited the electron-hole recombination, which were crucial for efficient photocatalysis. This study not only provided a strategy for constructing heterojunction composites in the field of g-C3N4 photocatalytic hydrogen evolution, but also deeply analyzed the electron migration direction and the reasons for enhancing carrier separation in the Z-type heterojunction scheme, which provided potential help for subsequent researchers.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yang Feng, Yuanyuan Wu, Zengjiang Yue, Ying Fu, Zhengyin Du
A method for the construction of 2-fluoropyrazolo[1,5-a]pyridines through base-promoted [3+2] cycloaddition of N-aminopyridinium salts with gem-difluorostyrenes has been established. A range of N-heterocycles with 2-fluorinated pyrazo[1,5-a]pyridines were efficiently obtained in moderate to good yields. The impact of different substituents on the reaction was discussed in detail. The protocol shows great potential for the synthesis of valuable fluorinated compounds by utilizing gem-difluorostyrenes as fluoride-containing building blocks.
{"title":"Synthesis of 2-fluorinated pyrazolo[1,5-a]pyridines via base- mediated [3+2] cycloaddition of N-aminopyridinium salts with gem-difluorostyrenes","authors":"Yang Feng, Yuanyuan Wu, Zengjiang Yue, Ying Fu, Zhengyin Du","doi":"10.1039/d4nj02150a","DOIUrl":"https://doi.org/10.1039/d4nj02150a","url":null,"abstract":"A method for the construction of 2-fluoropyrazolo[1,5-<em>a</em>]pyridines through base-promoted [3+2] cycloaddition of <em>N</em>-aminopyridinium salts with <em>gem</em>-difluorostyrenes has been established. A range of N-heterocycles with 2-fluorinated pyrazo[1,5-<em>a</em>]pyridines were efficiently obtained in moderate to good yields. The impact of different substituents on the reaction was discussed in detail. The protocol shows great potential for the synthesis of valuable fluorinated compounds by utilizing <em>gem</em>-difluorostyrenes as fluoride-containing building blocks.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lingwei Yu, Ying Zhang, Leyi Zhou, Yaqi Wang, Xinru Ma, Zhangkun Hou, Hongchuan Zhang, Sai Xie, Zi-Feng Yan
Electrocatalytic reduction of CO2 (CO2RR) to valuable fuels or chemical feedstocks provides a potential pathway to reach carbon-neutral economy and address environmental issues. However, selectively reducing CO2 to methane with high energy density remains a big challenge. The synergistic effect of Cu/oxide active sites and substrate at the interface plays an important role in the catalytic performance. Herein, annealed cerium oxide nanorods (CeO2-x) loaded with Cu were synthesized and showed a high catalytic selectivity to methane. The faradaic efficiency of CH4 reached 52.7% at -1.8 V vs. RHE, in an H-type electrolytic cell. Detailed studies suggested that the enhanced performance of Cu-CeO2-x was attributed mainly to the reducibility of Cu species modulated by high concentration of oxygen vacancies on annealed CeO2-x, which stabilized highly efficient active sites for the electroreduction of CO2 to methane.
电催化还原二氧化碳（CO2RR），将其转化为有价值的燃料或化学原料，为实现碳中和经济和解决环境问题提供了一条潜在的途径。然而，选择性地将二氧化碳还原成高能量密度的甲烷仍然是一个巨大的挑战。铜/氧化物活性位点与底物在界面上的协同效应对催化性能起着重要作用。本文合成了负载铜的退火氧化铈纳米棒（CeO2-x），并显示出对甲烷的高催化选择性。在 H 型电解池中，当电压为 -1.8 V、相对于 RHE 时，CH4 的远催化效率达到 52.7%。详细研究表明，Cu-CeO2-x 性能的提高主要归因于退火 CeO2-x 上高浓度氧空位对 Cu 物种还原性的调节，从而稳定了 CO2 电还原成甲烷的高效活性位点。
{"title":"Promoting reducibility and activity of Cu by tuning oxygen defects on Ceria for selective electrochemical CO2 reduction to methane","authors":"Lingwei Yu, Ying Zhang, Leyi Zhou, Yaqi Wang, Xinru Ma, Zhangkun Hou, Hongchuan Zhang, Sai Xie, Zi-Feng Yan","doi":"10.1039/d4nj01772b","DOIUrl":"https://doi.org/10.1039/d4nj01772b","url":null,"abstract":"Electrocatalytic reduction of CO2 (CO2RR) to valuable fuels or chemical feedstocks provides a potential pathway to reach carbon-neutral economy and address environmental issues. However, selectively reducing CO2 to methane with high energy density remains a big challenge. The synergistic effect of Cu/oxide active sites and substrate at the interface plays an important role in the catalytic performance. Herein, annealed cerium oxide nanorods (CeO2-x) loaded with Cu were synthesized and showed a high catalytic selectivity to methane. The faradaic efficiency of CH4 reached 52.7% at -1.8 V vs. RHE, in an H-type electrolytic cell. Detailed studies suggested that the enhanced performance of Cu-CeO2-x was attributed mainly to the reducibility of Cu species modulated by high concentration of oxygen vacancies on annealed CeO2-x, which stabilized highly efficient active sites for the electroreduction of CO2 to methane.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141531809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bo Sun, Man Li, Lifeng Cheng, Qijian Li, Xiaowen Chen, Shengqi Wang, Wenhua Yan, Lei Wang, Fuxiang Wei, Qingliang Wang
Transition metal oxides (TMOs) have excellent electrochemical properties. However, they are commonly associated with short cycle lives, agglomeration, and lower electrical conductivity. To ameliorate these drawbacks, porous rod-shaped CuO@Co3O4 has been synthesized through calcination with optimized oxidation temperature by using CuCo-MOF-74 as a template. Due to the porous structure, the CuO@Co3O4 electrode significantly increases the contact area with the electrolyte and greatly improves the reaction kinetics. As a result, the CuO@Co3O4 electrode exhibits excellent electrochemical performance with a specific capacitance of 545.5 F g−1 at a current density of 1 A g−1. The capacitance retention at 10 A g−1 was 88.7% after 10 000 cycles. Furthermore, an asymmetric supercapacitor (SC) has been assembled with CuO@Co3O4 as the positive electrode and commercial reduced graphene oxide (RGO) as the negative electrode, and the device has exhibited an energy density of 38.2 W h kg−1 at a power density of 1268.3 W kg−1. Impressively, the capacitance retention remained 83.2% even after 10 000 cycles at a high current density of 10 A g−1. This performance has demonstrated the potential of CuO@Co3O4 as an anode material for SCs.
过渡金属氧化物（TMO）具有优异的电化学特性。然而，它们通常具有循环寿命短、团聚和导电性较低等缺点。为了改善这些缺点，我们以 CuCo-MOF-74 为模板，在优化的氧化温度下通过煅烧合成了多孔棒状 CuO@Co3O4。由于具有多孔结构，CuO@Co3O4 电极大大增加了与电解质的接触面积，极大地改善了反应动力学。因此，CuO@Co3O4 电极表现出优异的电化学性能，在电流密度为 1 A g-1 时，比电容为 545.5 F g-1。在 10 A g-1 条件下，10 000 次循环后的电容保持率为 88.7%。此外，以 CuO@Co3O4 为正极、商用还原氧化石墨烯 (RGO) 为负极组装了一种不对称超级电容器 (SC)，该器件在功率密度为 1268.3 W kg-1 时的能量密度为 38.2 W h kg-1。令人印象深刻的是，在 10 A g-1 的高电流密度下，即使经过 10 000 次循环，电容保持率仍高达 83.2%。这一性能证明了 CuO@Co3O4 作为 SC 负极材料的潜力。
{"title":"Morphology-controllable synthesis of rod-shaped CuO@Co3O4 derived from CuCo-MOF-74 for supercapacitors","authors":"Bo Sun, Man Li, Lifeng Cheng, Qijian Li, Xiaowen Chen, Shengqi Wang, Wenhua Yan, Lei Wang, Fuxiang Wei, Qingliang Wang","doi":"10.1039/d4nj01863j","DOIUrl":"https://doi.org/10.1039/d4nj01863j","url":null,"abstract":"Transition metal oxides (TMOs) have excellent electrochemical properties. However, they are commonly associated with short cycle lives, agglomeration, and lower electrical conductivity. To ameliorate these drawbacks, porous rod-shaped CuO@Co<small><sub>3</sub></small>O<small><sub>4</sub></small> has been synthesized through calcination with optimized oxidation temperature by using CuCo-MOF-74 as a template. Due to the porous structure, the CuO@Co<small><sub>3</sub></small>O<small><sub>4</sub></small> electrode significantly increases the contact area with the electrolyte and greatly improves the reaction kinetics. As a result, the CuO@Co<small><sub>3</sub></small>O<small><sub>4</sub></small> electrode exhibits excellent electrochemical performance with a specific capacitance of 545.5 F g<small><sup>−1</sup></small> at a current density of 1 A g<small><sup>−1</sup></small>. The capacitance retention at 10 A g<small><sup>−1</sup></small> was 88.7% after 10 000 cycles. Furthermore, an asymmetric supercapacitor (SC) has been assembled with CuO@Co<small><sub>3</sub></small>O<small><sub>4</sub></small> as the positive electrode and commercial reduced graphene oxide (RGO) as the negative electrode, and the device has exhibited an energy density of 38.2 W h kg<small><sup>−1</sup></small> at a power density of 1268.3 W kg<small><sup>−1</sup></small>. Impressively, the capacitance retention remained 83.2% even after 10 000 cycles at a high current density of 10 A g<small><sup>−1</sup></small>. This performance has demonstrated the potential of CuO@Co<small><sub>3</sub></small>O<small><sub>4</sub></small> as an anode material for SCs.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C-Glycosyl amino acids are a group of C-glycosides in which a carbohydrate molecule is attached to the side chain or backbone of the amino acid via a C–C bond. Despite the numerous methods that have been developed for their synthesis, the C-glycosyl α-amino acids and their oligomers are relatively unexplored. In this work, we presented a protocol for the synthesis of oligomers containing alternating C-glycosyl α-amino acids and proteinogenic α-amino acids. The methodology is based on the modification of α-acyloxyamides obtained from the Passerini reaction using α-D-galactopyranose- and α-L-sorbofuranose-derived aldehydes as C-glycosyl donors. The protocol enabled the synthesis of homo- and heterochiral tetramers, and homo- and heterovalent tetramers in very good yields.
{"title":"The synthesis of oligomers containing alternating C-glycosyl α-amino acids and proteinogenic α-amino acids","authors":"Ivana Colić, Barbara Bogović, Ivanka Jerić","doi":"10.1039/d4nj02059f","DOIUrl":"https://doi.org/10.1039/d4nj02059f","url":null,"abstract":"<em>C</em>-Glycosyl amino acids are a group of <em>C</em>-glycosides in which a carbohydrate molecule is attached to the side chain or backbone of the amino acid <em>via</em> a C–C bond. Despite the numerous methods that have been developed for their synthesis, the <em>C</em>-glycosyl α-amino acids and their oligomers are relatively unexplored. In this work, we presented a protocol for the synthesis of oligomers containing alternating <em>C</em>-glycosyl α-amino acids and proteinogenic α-amino acids. The methodology is based on the modification of α-acyloxyamides obtained from the Passerini reaction using α-<small>D</small>-galactopyranose- and α-<small>L</small>-sorbofuranose-derived aldehydes as <em>C</em>-glycosyl donors. The protocol enabled the synthesis of homo- and heterochiral tetramers, and homo- and heterovalent tetramers in very good yields.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The relationship between the membrane-disrupting antibacterial activities and the structures of cyclodextrin derivatives containing cationic and hydrophobic moieties was investigated.
研究了膜破坏抗菌活性与含有阳离子和疏水分子的环糊精衍生物结构之间的关系。
{"title":"Amphiphilic cyclodextrin derivatives with antibacterial activity: chemical mutation and structure–activity relationship","authors":"Hatsuo Yamamura, Ayame Kato, Eri Yamada, Hisato Kato, Takashi Katsu, Kazufumi Masuda, Kayo Osawa, Atsushi Miyagawa","doi":"10.1039/d4nj01874e","DOIUrl":"https://doi.org/10.1039/d4nj01874e","url":null,"abstract":"The relationship between the membrane-disrupting antibacterial activities and the structures of cyclodextrin derivatives containing cationic and hydrophobic moieties was investigated.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The solvothermal method of producing spherically shaped and highly fluorescent tiny shaped (~3 nm) nitrogen-doped carbon quantum dots (NCQDs) with high quantum yield (43%) from Ixora coccinea flowers and o-Phenylenediamine has been approached sustainably. Since this NCQD exhibits excitation-dependent fluorescence activity, it was used to detect the Fe3+ ion selectively in real-time with human blood serum because it is a component of human blood. The Limit of Detection (LOD) of NCQD was found to be 60nM. We also synthesized palladium nanoparticles utilizing NCQDs without additional reducing or stabilizing agents because these quantum dots serve as both. Numerous characterization techniques were used to characterize the nanoparticle, and all the characterizations showed the presence of NCQD which stabilizes the nanoparticle. Palladium nanoparticles' small size (4 nm) and large surface area (35.77 m2/g) enable them to exhibit strong catalytic activity in Suzuki-Miyaura coupling and cyanation processes. It is obvious that synthetic palladium nanoparticles and NCQD have a variety of uses in the field of catalysis and sensing respectively.
{"title":"Ixora coccinea flowers derived green luminescent carbon quantum dots for Fe3+ recognition and preparation of Pd nanoparticles for the Suzuki- Miyaura coupling and cyanation process","authors":"Kulathu Iyer Sathiyanarayanan, Namrata Priyadarshini Hota","doi":"10.1039/d4nj02217c","DOIUrl":"https://doi.org/10.1039/d4nj02217c","url":null,"abstract":"The solvothermal method of producing spherically shaped and highly fluorescent tiny shaped (~3 nm) nitrogen-doped carbon quantum dots (NCQDs) with high quantum yield (43%) from Ixora coccinea flowers and o-Phenylenediamine has been approached sustainably. Since this NCQD exhibits excitation-dependent fluorescence activity, it was used to detect the Fe3+ ion selectively in real-time with human blood serum because it is a component of human blood. The Limit of Detection (LOD) of NCQD was found to be 60nM. We also synthesized palladium nanoparticles utilizing NCQDs without additional reducing or stabilizing agents because these quantum dots serve as both. Numerous characterization techniques were used to characterize the nanoparticle, and all the characterizations showed the presence of NCQD which stabilizes the nanoparticle. Palladium nanoparticles' small size (4 nm) and large surface area (35.77 m2/g) enable them to exhibit strong catalytic activity in Suzuki-Miyaura coupling and cyanation processes. It is obvious that synthetic palladium nanoparticles and NCQD have a variety of uses in the field of catalysis and sensing respectively.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Curcuminoid boron difluoride dyes have garnered significant attention in the realm of bioimaging, primarily due to their excellent photophysicochemical properties. However, the strong hydrophobicity limits their optimal near-infrared (NIR) fluorescence emission, and the synthesis process is complicated. In this study, Curc-TPA, a curcuminoid boron difluoride derivative with high fluorescence quantum yield, was simply synthesized and surprisingly exhibited aggregation-induced NIR emission in dimethyl sulfoxide/water mixture. The compound self-assembled into stable and homogeneous nanoparticles through hydrophobic interaction with amphiphilic polymer 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-poly(ethylene glycol), which showed enhanced aggregation-induced emission (AIE) capacity in the NIR region. The nanoparticles specifically enriched at the tumor site due to enhanced penetration and retention effect and exhibited bright fluorescence imaging in vitro and in vivo. Notably, they showed satisfactory hematological compatibility and unobservable cellular and histological toxicity. Therefore, it is of promising clinical significance in the AIE-enhanced NIR fluorescence imaging-visualized precise diagnosis of cancer.
{"title":"Nanoconstruction of curcuminoid boron difluoride dyes with aggregation-induced emission for high-light fluorescence imaging of malignant tumor","authors":"Ziwei Zhao, Susu Yan, Yanan Li","doi":"10.1039/d4nj01682c","DOIUrl":"https://doi.org/10.1039/d4nj01682c","url":null,"abstract":"Curcuminoid boron difluoride dyes have garnered significant attention in the realm of bioimaging, primarily due to their excellent photophysicochemical properties. However, the strong hydrophobicity limits their optimal near-infrared (NIR) fluorescence emission, and the synthesis process is complicated. In this study, Curc-TPA, a curcuminoid boron difluoride derivative with high fluorescence quantum yield, was simply synthesized and surprisingly exhibited aggregation-induced NIR emission in dimethyl sulfoxide/water mixture. The compound self-assembled into stable and homogeneous nanoparticles through hydrophobic interaction with amphiphilic polymer 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-poly(ethylene glycol), which showed enhanced aggregation-induced emission (AIE) capacity in the NIR region. The nanoparticles specifically enriched at the tumor site due to enhanced penetration and retention effect and exhibited bright fluorescence imaging in vitro and in vivo. Notably, they showed satisfactory hematological compatibility and unobservable cellular and histological toxicity. Therefore, it is of promising clinical significance in the AIE-enhanced NIR fluorescence imaging-visualized precise diagnosis of cancer.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhuocheng Li, hao Cui, suhang Xu, Zihang Zhang, Zuoqin Liang, Changqing Ye, Xiaomei Wang
Revealing the structure-property relationships is crucial for promoting the development of photochromic materials and achieving the desired function in practical applications. Herein, a series of triphenylethylene photochromic materials (TP, TP-F, TP-Cl and TP-Br) have been synthesized and their photochromic properties were investigated. Monohalogenated TP-F, TP-Cl and TP-Br display obvious photochromic behaviors in solution, solid state and polymer film. It is found that the halogen atoms with weak electron withdrawing ability can dramatically enhance the photocolorabilities of triphenylethylene. Moreover, TP-Cl and TP-Br exhibit different fatigue processes from TP-F. The further characterization reveals that the key factor leading to the diverse photochromic properties is cis/trans isomerization of triphenylethylene. The coloration of triphenylethylene mainly comes from the photo-triggered cyclization of cis-isomers. The initial attenuation of TP-Cl and TP-Br under UV irradiation is mainly caused by cis-trans photoisomerization, rather than the oxygen-involved photooxidation reactions. Based on the controllable “turn-on” and “turn-off” photobehaviors, TP-Cl and TP-Br were applied in the photoswitchable patterns, showing enhanced signal-to-background ratio.
{"title":"Effect of cis/trans isomerization on the photochromic performance of triphenylethylene","authors":"Zhuocheng Li, hao Cui, suhang Xu, Zihang Zhang, Zuoqin Liang, Changqing Ye, Xiaomei Wang","doi":"10.1039/d4nj02060j","DOIUrl":"https://doi.org/10.1039/d4nj02060j","url":null,"abstract":"Revealing the structure-property relationships is crucial for promoting the development of photochromic materials and achieving the desired function in practical applications. Herein, a series of triphenylethylene photochromic materials (TP, TP-F, TP-Cl and TP-Br) have been synthesized and their photochromic properties were investigated. Monohalogenated TP-F, TP-Cl and TP-Br display obvious photochromic behaviors in solution, solid state and polymer film. It is found that the halogen atoms with weak electron withdrawing ability can dramatically enhance the photocolorabilities of triphenylethylene. Moreover, TP-Cl and TP-Br exhibit different fatigue processes from TP-F. The further characterization reveals that the key factor leading to the diverse photochromic properties is cis/trans isomerization of triphenylethylene. The coloration of triphenylethylene mainly comes from the photo-triggered cyclization of cis-isomers. The initial attenuation of TP-Cl and TP-Br under UV irradiation is mainly caused by cis-trans photoisomerization, rather than the oxygen-involved photooxidation reactions. Based on the controllable “turn-on” and “turn-off” photobehaviors, TP-Cl and TP-Br were applied in the photoswitchable patterns, showing enhanced signal-to-background ratio.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Correction for ‘Exploring high-energy and low-sensitivity energetic compounds based on experiments and DFT studies’ by Qiaoli Li et al., New J. Chem., 2023, 47, 19523–19528, https://doi.org/10.1039/D3NJ03514J.
{"title":"Correction: Exploring high-energy and low-sensitivity energetic compounds based on experiments and DFT studies","authors":"Caijin Lei, Qiaoli Li, Shenshen Li, Hongwei Yang, Jijun Xiao, Guangbin Cheng","doi":"10.1039/d4nj90088j","DOIUrl":"https://doi.org/10.1039/d4nj90088j","url":null,"abstract":"Correction for ‘Exploring high-energy and low-sensitivity energetic compounds based on experiments and DFT studies’ by Qiaoli Li <em>et al.</em>, <em>New J. Chem.</em>, 2023, <strong>47</strong>, 19523–19528, https://doi.org/10.1039/D3NJ03514J.","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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