Photoswitchable Composite Organic Nanoparticles with Aggregation-Induced Enhanced Emission
Aiming at the bistable photochromic switching of fluorescence emission, a new class of organic composite nanoparticles (CNPs), based on photochromic (1,2-bis(2-methylbenzo[b]-thiophen-3-yl) hexafluorocyclopentene) (BTF6) and fluorescent N,N-di[3-Hydroxy-4-(2-benzo-thiazole)phenyl]5-tert-butyl-isophthalic amide (DHBIA), were synthesized by a simple reprecipitation method. Reversible and bistable ON/OFF fluorescence switching is successfully implemented in the CNPs and also in a more practical PVA film loaded with the CNPs. Furthermore, strong fluorescence signal was achieved in the CNPs due to the employment of DHBIA molecules which shows a remarkably aggregation-induced enhanced emission in the solid state.
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Document Type: Research Article
Publication date: 01 December 2010
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