Combination of aggregation-induced emission and clusterization-triggered emission in mesoporous silica nanoparticles for the construction of an efficient artificial light-harvesting system. Issue 41 (9th October 2020)

• Record Type: Journal Article
• Authors: Yan, Saisai; Gao, Zhinong; Yan, Hongyan; Niu, Fei; Zhang, Zhengqin
• Is Part Of: Journal of materials chemistry. Volume 8:Issue 41(2020)
• Page Start: 14587
• Page End: 14594
• Publication Date: 2020-10-09
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0tc03619f
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A highly efficient ALHS was constructed based on the non-covalent assembly of fluorescent MSNs and RB in an aqueous environment. Abstract : New strategies that can simultaneously overcome the aggregation-caused quenching and enhance the energy-transfer efficiency are still in urgent need. In this study, a superior artificial light-harvesting system (ALHS) with synergetic aggregation-induced emission (AIE) and clusterization-triggered emission (CTE) effects was successfully constructed in an aqueous environment based on the self-assembly of fluorescent mesoporous silica nanoparticles (MSNs) and Rhodamine-B (RB). The AIE effect was provided by the encapsulated fluorescent gemini surfactant CTPE –C6 –CTPE, while the CTE effect was provided by the ethanol-induced uncommon clusteroluminogens. By properly tuning the concentration of CTPE –C6 –CTPE, shape-controlled fluorescent MSNs can be facilely prepared, producing spherical MSNs (Ac-100-M) with fascinating fluorescence properties, pH-sensitivity and reversible temperature-sensitive properties. More importantly, multicolor emission can be realized by simply adjusting the concentration of RB, achieving the bright white light emission with a CIE coordinate of (0.33, 0.34) and a fluorescence quantum yield as high as 63.25%. The developed fluorescent MSNs enrich the family of ALHS and provide important insights into the construction of highly efficient multicolored materials for various applications.