Topological materials from heavy p-block metal chalcogenides having layered structures and anisotropic bonding are of immense importance for thermoelectrics. Synthesis of such materials with simple chemical routes is of high significance. Here, we present a low-temperature, facile, one-pot, and cost-effective synthesis of topological insulator Bi2Se3 nanosheets. The material demonstrates excellent electrical transport and low thermal conductivity, leading to a peak thermoelectric figure of merit (ZT) of ⁓0.41 at 480 K. Additionally, the synthesis of Bi2S3 nanoparticles under ambient conditions suggests the versatility of the method.
{"title":"A Facile One-Pot Recipe for Topological Insulator Bi2Se3 and Thermoelectric Properties","authors":"Anil Kumar BM, Rittika Dhar, Shuva Biswas, Satya Narayan Guin","doi":"10.1039/d5cc01314c","DOIUrl":"https://doi.org/10.1039/d5cc01314c","url":null,"abstract":"Topological materials from heavy p-block metal chalcogenides having layered structures and anisotropic bonding are of immense importance for thermoelectrics. Synthesis of such materials with simple chemical routes is of high significance. Here, we present a low-temperature, facile, one-pot, and cost-effective synthesis of topological insulator Bi2Se3 nanosheets. The material demonstrates excellent electrical transport and low thermal conductivity, leading to a peak thermoelectric figure of merit (ZT) of ⁓0.41 at 480 K. Additionally, the synthesis of Bi2S3 nanoparticles under ambient conditions suggests the versatility of the method.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"37 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rongbo Zhang, Yutong Xie, Xuyang Li, Kaiya Wang, Xiao-Yu Hu
The harvesting and utilization of light energy has increasingly captivated researchers. The construction of artificial light harvesting systems (ALHSs) through supramolecular assemblies has emerged as a prominent approach. Following the discovery of the aggregation-induced emission (AIE) phenomenon, AIE luminogens (AIEgens) have been extensively employed to develop ALHSs, in which these molecules are assembled into nanoparticles or nanoaggregates to enhance energy transfer efficiency. In this review, we summarize recent research advances in supramolecular ALHSs based on AIEgens, including some representative examples reported by our research group and others. In particular, different design strategies for ALHSs formed by self-assembly of host-guest complexes and other building blocks such as macrocyclic and amphiphilic molecules, are discussed over the past three years. For host-guest complexes with AIE activity, we analyze the design principles of AIE-active hosts or guests, and how their self-assembly influences the efficiency of ALHSs. For AIE-active macrocycles or amphiphiles that do not form host-guest complexes, we discuss how they can independently self-assemble into ALHSs. Finally, future research directions for the utilization of AIEgens in the development of ALHSs are discussed.
{"title":"Supramolecular artificial light-harvesting systems incorporating aggregation-induced emissive components: from fabrication to efficient energy conversion","authors":"Rongbo Zhang, Yutong Xie, Xuyang Li, Kaiya Wang, Xiao-Yu Hu","doi":"10.1039/d4cc06816e","DOIUrl":"https://doi.org/10.1039/d4cc06816e","url":null,"abstract":"The harvesting and utilization of light energy has increasingly captivated researchers. The construction of artificial light harvesting systems (ALHSs) through supramolecular assemblies has emerged as a prominent approach. Following the discovery of the aggregation-induced emission (AIE) phenomenon, AIE luminogens (AIEgens) have been extensively employed to develop ALHSs, in which these molecules are assembled into nanoparticles or nanoaggregates to enhance energy transfer efficiency. In this review, we summarize recent research advances in supramolecular ALHSs based on AIEgens, including some representative examples reported by our research group and others. In particular, different design strategies for ALHSs formed by self-assembly of host-guest complexes and other building blocks such as macrocyclic and amphiphilic molecules, are discussed over the past three years. For host-guest complexes with AIE activity, we analyze the design principles of AIE-active hosts or guests, and how their self-assembly influences the efficiency of ALHSs. For AIE-active macrocycles or amphiphiles that do not form host-guest complexes, we discuss how they can independently self-assemble into ALHSs. Finally, future research directions for the utilization of AIEgens in the development of ALHSs are discussed.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"17 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Václav Kolařík, Adam Knirsch, Zdeňka Prucková, Petr Janovský, Michal Rouchal, Kari Rissanen, Robert Vícha, Aneta Hromádková, Jas S Ward
Cationic guests with an adamantylphenyl moiety can form two distinct arrangements with the conical β-cyclodextrin macrocycle. Different metal cations were found to promote the formation of one of the two possible forms, depending on their van der Waals radii. Bulkier ions prefer the wider secondary rim of β-cyclodextrin, pushing the cationic part of the guest towards the narrower primary rim, and vice versa.
{"title":"Metal cations switch geometry of β-cyclodextrin complexes","authors":"Václav Kolařík, Adam Knirsch, Zdeňka Prucková, Petr Janovský, Michal Rouchal, Kari Rissanen, Robert Vícha, Aneta Hromádková, Jas S Ward","doi":"10.1039/d5cc00868a","DOIUrl":"https://doi.org/10.1039/d5cc00868a","url":null,"abstract":"Cationic guests with an adamantylphenyl moiety can form two distinct arrangements with the conical β-cyclodextrin macrocycle. Different metal cations were found to promote the formation of one of the two possible forms, depending on their van der Waals radii. Bulkier ions prefer the wider secondary rim of β-cyclodextrin, pushing the cationic part of the guest towards the narrower primary rim, and vice versa.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"60 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Poly(2-isopropyloxazoline) (PiPrOx) exhibits UCST- or LCST-type phase transitions in ionic liquids (ILs) depending on IL structure. In LCST-type ILs, where low solution entropy is favorable, PiPrOx crystallizes immediately after phase separation, unlike in water. FT-IR reveals a trans-rich conformation with structural constraint, facilitating both LCST-type phase separation and rapid crystallization.
{"title":"From LCST to Crystals: Structural Modulation of Ionic Liquids Drives Phase Transition of Poly(2-isopropyl-2-oxazoline)","authors":"Mai Kamiyama Ueda, Takeshi Ueki, Yuji Kamiyama, Ryota Tamate, Keisuke Watanabe, Yukiteru Katsumoto","doi":"10.1039/d5cc01017a","DOIUrl":"https://doi.org/10.1039/d5cc01017a","url":null,"abstract":"Poly(2-isopropyloxazoline) (PiPrOx) exhibits UCST- or LCST-type phase transitions in ionic liquids (ILs) depending on IL structure. In LCST-type ILs, where low solution entropy is favorable, PiPrOx crystallizes immediately after phase separation, unlike in water. FT-IR reveals a trans-rich conformation with structural constraint, facilitating both LCST-type phase separation and rapid crystallization.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"108 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pan Zhou, Mengru Guo, Jiawei Li, Xu Li, Danyang Xie, Bo Qin, Yong Xia
We report an efficient protocol for the construction of δ-alkynyl amides via 1,5-hydrogen atom transfer and alkynyl group transfer of ethynesulfonamides. The readily installed ethynesulfonamides serve as both amidyl radical precursor and alkyne source. This reaction features excellent site selectivity for tertiary, secondary, primary, and benzylic C(sp3)–H bonds.
{"title":"Remote Radical Alkynylation of Unactivated C(sp3)−H Bonds of Ethynesulfonamides","authors":"Pan Zhou, Mengru Guo, Jiawei Li, Xu Li, Danyang Xie, Bo Qin, Yong Xia","doi":"10.1039/d5cc01215e","DOIUrl":"https://doi.org/10.1039/d5cc01215e","url":null,"abstract":"We report an efficient protocol for the construction of δ-alkynyl amides via 1,5-hydrogen atom transfer and alkynyl group transfer of ethynesulfonamides. The readily installed ethynesulfonamides serve as both amidyl radical precursor and alkyne source. This reaction features excellent site selectivity for tertiary, secondary, primary, and benzylic C(sp3)–H bonds.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"59 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhening Jin, Yuan Shi, Zhangchi Zheng, Yuxin Ding, Wei Ke Su, Chang-Jun Zhang, Yuan-Yuan Xie
A Headings are the primary heading type e.g. Introduction, Results and discussion, Experimental Due to the high reactivity of electrochemical reactions, radical intermediates typically exhibit very short lifetimes. This study presents a stable and mild electrochemical dual-radical strategy for tri/di-fluoromethylarylation of alkenes. The synergistic combination of cyanoarene and phenanthrene as dual redox mediators constructs an efficient catalytic system.
{"title":"A dual-radical process for tri/di-fluoromethylarylation of alkenes enabled by indirect electroreduction","authors":"Zhening Jin, Yuan Shi, Zhangchi Zheng, Yuxin Ding, Wei Ke Su, Chang-Jun Zhang, Yuan-Yuan Xie","doi":"10.1039/d5cc00744e","DOIUrl":"https://doi.org/10.1039/d5cc00744e","url":null,"abstract":"A Headings are the primary heading type e.g. Introduction, Results and discussion, Experimental Due to the high reactivity of electrochemical reactions, radical intermediates typically exhibit very short lifetimes. This study presents a stable and mild electrochemical dual-radical strategy for tri/di-fluoromethylarylation of alkenes. The synergistic combination of cyanoarene and phenanthrene as dual redox mediators constructs an efficient catalytic system.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"101 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shengnan Sun, Jun Zhou, Debbie Hwee Leng Seng, Hui Ru Tan, Shibo Xi, Xiping Ni, Fengxia Wei, Poh Chong Lim, Ming Lin, Yi Ren, Shijie Wang, Zhi Wei Seh
This work studies the influence of oxygen chemistry on the reduction potential in conversion-type NiO anodes in lithium-ion batteries and reveals that the hole states on oxygen are highly polarized and serve as a bridge that facilitates the reduction of Ni2+, representing a higher potential plateau associated with Ni–O bond cleavage.
{"title":"Oxygen hole states facilitated cleavage of Ni–O bonds in the rock-salt phase of a conversion-type anode","authors":"Shengnan Sun, Jun Zhou, Debbie Hwee Leng Seng, Hui Ru Tan, Shibo Xi, Xiping Ni, Fengxia Wei, Poh Chong Lim, Ming Lin, Yi Ren, Shijie Wang, Zhi Wei Seh","doi":"10.1039/d5cc00987a","DOIUrl":"https://doi.org/10.1039/d5cc00987a","url":null,"abstract":"This work studies the influence of oxygen chemistry on the reduction potential in conversion-type NiO anodes in lithium-ion batteries and reveals that the hole states on oxygen are highly polarized and serve as a bridge that facilitates the reduction of Ni<small><sup>2+</sup></small>, representing a higher potential plateau associated with Ni–O bond cleavage.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"108 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143819792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jin Wang, Fangqi Liu, Chun Shan, Jiarui Zhu, Zengjian Guo, Xuesong Zhang, Lujia Han
ANiO3 (A = La, Ce, and Sr) perovskites were innovatively synthesized for catalytic steam reforming of polyethylene terephthalate (PET) following non-catalytic decomposition. CeNiO3, featuring a dual-active NiO-Ce1-xNixO2 nanocomposite with moderate oxygen vacancies, achieved a high H2 yield of 54.58 mmol gPET-1 and a carbon conversion efficiency of 83.13%.
{"title":"A dual-active NiO-Ce<sub>1-<i>x</i></sub>Ni<sub><i>x</i></sub>O<sub>2</sub> nanocomposite for catalytically upcycling PET into H<sub>2</sub>.","authors":"Jin Wang, Fangqi Liu, Chun Shan, Jiarui Zhu, Zengjian Guo, Xuesong Zhang, Lujia Han","doi":"10.1039/d5cc01304f","DOIUrl":"https://doi.org/10.1039/d5cc01304f","url":null,"abstract":"<p><p>ANiO<sub>3</sub> (A = La, Ce, and Sr) perovskites were innovatively synthesized for catalytic steam reforming of polyethylene terephthalate (PET) following non-catalytic decomposition. CeNiO<sub>3</sub>, featuring a dual-active NiO-Ce<sub>1-<i>x</i></sub>Ni<sub><i>x</i></sub>O<sub>2</sub> nanocomposite with moderate oxygen vacancies, achieved a high H<sub>2</sub> yield of 54.58 mmol g<sub>PET</sub><sup>-1</sup> and a carbon conversion efficiency of 83.13%.</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143810183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seok Joo Yang, Sung Won Song, Chaneui Park, Jinhyeok Choi, Eunho Lee, Min Kim
Metal-halide perovskite solar cells (PeSCs) have shown extraordinary progress in power conversion efficiency, but their operational long-term stability is still far behind for successful industrialization. There are various environmental factors impacting the degradation of perovskite materials, which should be studied and understood within harsh measuring protocols. In addition, the relating degradation mechanisms under device operation must be correlated and comprehended. Here, we summarize and review various mechanisms of how perovskite degrades during measurement protocols that use combinations of illumination, ambient atmosphere, and thermal stress. We suggest effective strategies to improve long-term stability of perovskite materials based on crystallization modification, compositions, and surface engineering strategies. We believe that the proper utilization of the understandings on the degradation of perovskite crystals and methodologies that we review in this article to improve the operational stability of PeSCs may facilitate commercialization of PeSCs.
{"title":"Protocols for Degradation Assessment and Stability Enhancement in Perovskite Solar Cell","authors":"Seok Joo Yang, Sung Won Song, Chaneui Park, Jinhyeok Choi, Eunho Lee, Min Kim","doi":"10.1039/d5cc01404b","DOIUrl":"https://doi.org/10.1039/d5cc01404b","url":null,"abstract":"Metal-halide perovskite solar cells (PeSCs) have shown extraordinary progress in power conversion efficiency, but their operational long-term stability is still far behind for successful industrialization. There are various environmental factors impacting the degradation of perovskite materials, which should be studied and understood within harsh measuring protocols. In addition, the relating degradation mechanisms under device operation must be correlated and comprehended. Here, we summarize and review various mechanisms of how perovskite degrades during measurement protocols that use combinations of illumination, ambient atmosphere, and thermal stress. We suggest effective strategies to improve long-term stability of perovskite materials based on crystallization modification, compositions, and surface engineering strategies. We believe that the proper utilization of the understandings on the degradation of perovskite crystals and methodologies that we review in this article to improve the operational stability of PeSCs may facilitate commercialization of PeSCs.","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":"39 1","pages":""},"PeriodicalIF":4.9,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fengbo Liu, Haiqi Xiao, Quan Gao, Didier Siri, David Bardelang, Qi Xing, Jing Geng
Interested in host·guest binding events in cellular environments, intracellular recognition between fluorescent BODIPY+ and cucurbit[7]uril was explored for lysosome tracking in living cancer cells. Sequential deaggregation from spontaneously dimerized BODIPY+ was unusually discovered upon complexation with CB[7].
{"title":"Tracking host-guest recognition in cells by a BODIPY·CB[7] complex.","authors":"Fengbo Liu, Haiqi Xiao, Quan Gao, Didier Siri, David Bardelang, Qi Xing, Jing Geng","doi":"10.1039/d5cc00663e","DOIUrl":"https://doi.org/10.1039/d5cc00663e","url":null,"abstract":"<p><p>Interested in host·guest binding events in cellular environments, intracellular recognition between fluorescent BODIPY<sup>+</sup> and cucurbit[7]uril was explored for lysosome tracking in living cancer cells. Sequential deaggregation from spontaneously dimerized BODIPY<sup>+</sup> was unusually discovered upon complexation with CB[7].</p>","PeriodicalId":67,"journal":{"name":"Chemical Communications","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143810330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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