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Photoswitchable Composite Organic Nanoparticles with Aggregation-Induced Enhanced Emission

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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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Keywords: ENHANCED EMISSION; FLUORESCENCE; PHOTOCHROMIC SWITCHING

Document Type: Research Article

Publication date: 2010-12-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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