{"title":"具有随激发波长变化的发射和机械变色特性的金纳米团簇的组装驱动聚合诱导发射","authors":"Yuanyuan Huang, Xiaofei Han, Li Wang, Renjun Pei","doi":"10.1002/adom.202400078","DOIUrl":null,"url":null,"abstract":"<p>Metal nanoclusters with aggregation-induced emission (AIE) characteristics are potential nanomaterial candidates for a wide array of advanced optical applications. In this study, a novel self-assembly enhanced AIE strategy utilizing 6-thioguanine (TG)-protected gold nanoclusters (AuNCs) is fabricated with dual-stimuli responsive modes of excitation wavelength-dependent (Ex-De) emission and mechanochromic properties. The sheetlike structures of AuNCs self-assembly (AuNC sheets) with typical AIE characteristics are generated in bad solvent owing to the intermolecular hydrogen-bonds interaction among guanine-rich moieties of TG ligand. Interestingly, the maximum emission peaks of AuNC sheets are red-shifted with the increased excitation wavelengths, indicating Ex-De emission behavior. This phenomenon enables the achievement of wide-range tunable photoluminescence (PL). In addition, the emission peak of AuNC sheets powders before and after grinding displays the bathochromic shift of 110 nm. The “off–on” switch of Ex-De emission behavior in AuNC sheets can be manipulated by changing mechanical pressure. It is speculated that the tunable PL behavior of AuNC sheets originates from multiple excited states due to the existence of different Au(I)···Au(I) distances. The self-assembly-driven AIE strategy of AuNCs with stimuli-responsive allochroic modes will facilitate the recording of rewritable information, opening up a new avenue for high-throughput and multi-dimensional optical security.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":null,"pages":null},"PeriodicalIF":8.0000,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Assembly-Driven Aggregation-Induced Emission of Gold Nanoclusters with Excitation Wavelength-Dependent Emission and Mechanochromic Property\",\"authors\":\"Yuanyuan Huang, Xiaofei Han, Li Wang, Renjun Pei\",\"doi\":\"10.1002/adom.202400078\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Metal nanoclusters with aggregation-induced emission (AIE) characteristics are potential nanomaterial candidates for a wide array of advanced optical applications. In this study, a novel self-assembly enhanced AIE strategy utilizing 6-thioguanine (TG)-protected gold nanoclusters (AuNCs) is fabricated with dual-stimuli responsive modes of excitation wavelength-dependent (Ex-De) emission and mechanochromic properties. The sheetlike structures of AuNCs self-assembly (AuNC sheets) with typical AIE characteristics are generated in bad solvent owing to the intermolecular hydrogen-bonds interaction among guanine-rich moieties of TG ligand. Interestingly, the maximum emission peaks of AuNC sheets are red-shifted with the increased excitation wavelengths, indicating Ex-De emission behavior. This phenomenon enables the achievement of wide-range tunable photoluminescence (PL). In addition, the emission peak of AuNC sheets powders before and after grinding displays the bathochromic shift of 110 nm. The “off–on” switch of Ex-De emission behavior in AuNC sheets can be manipulated by changing mechanical pressure. It is speculated that the tunable PL behavior of AuNC sheets originates from multiple excited states due to the existence of different Au(I)···Au(I) distances. The self-assembly-driven AIE strategy of AuNCs with stimuli-responsive allochroic modes will facilitate the recording of rewritable information, opening up a new avenue for high-throughput and multi-dimensional optical security.</p>\",\"PeriodicalId\":116,\"journal\":{\"name\":\"Advanced Optical Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2024-06-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Optical Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/adom.202400078\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Optical Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adom.202400078","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Assembly-Driven Aggregation-Induced Emission of Gold Nanoclusters with Excitation Wavelength-Dependent Emission and Mechanochromic Property
Metal nanoclusters with aggregation-induced emission (AIE) characteristics are potential nanomaterial candidates for a wide array of advanced optical applications. In this study, a novel self-assembly enhanced AIE strategy utilizing 6-thioguanine (TG)-protected gold nanoclusters (AuNCs) is fabricated with dual-stimuli responsive modes of excitation wavelength-dependent (Ex-De) emission and mechanochromic properties. The sheetlike structures of AuNCs self-assembly (AuNC sheets) with typical AIE characteristics are generated in bad solvent owing to the intermolecular hydrogen-bonds interaction among guanine-rich moieties of TG ligand. Interestingly, the maximum emission peaks of AuNC sheets are red-shifted with the increased excitation wavelengths, indicating Ex-De emission behavior. This phenomenon enables the achievement of wide-range tunable photoluminescence (PL). In addition, the emission peak of AuNC sheets powders before and after grinding displays the bathochromic shift of 110 nm. The “off–on” switch of Ex-De emission behavior in AuNC sheets can be manipulated by changing mechanical pressure. It is speculated that the tunable PL behavior of AuNC sheets originates from multiple excited states due to the existence of different Au(I)···Au(I) distances. The self-assembly-driven AIE strategy of AuNCs with stimuli-responsive allochroic modes will facilitate the recording of rewritable information, opening up a new avenue for high-throughput and multi-dimensional optical security.
期刊介绍:
Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.