Monomeric and aggregation emissions of tetraphenylethene in a photo-switchable polymer controlled by cyclization of diarylethene and solvent conditions. Issue 38 (19th September 2017)

• Record Type: Journal Article
• Authors: Singh, Ravinder; Wu, Hsin-Yen; Kumar Dwivedi, Atul; Singh, Ashutosh; Lin, Chien-Min; Raghunath, Putikam; Lin, Ming-Chang; Wu, Tung-Kung; Wei, Kung-Hwa; Lin, Hong-Cheu
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 38(2017)
• Page Start: 9952
• Page End: 9962
• Publication Date: 2017-09-19
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7tc03071a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : AIE behaviour of TPE with open and closed forms of DAE in a photo-switchable polymer is studied in high water contents. Abstract : A novel photo-switchable polymerP-PHT containing diarylethene (DAE) and tetraphenylethene (TPE) moieties and a triazole linker in the repeating unit was synthesized to study the aggregation-induced emission (AIE) behaviour of TPE with both the open and closed forms of DAE inP-PHT with high water contents. The photo-switching phenomena of DAE (from open to closed forms under UV-irradiation) inP-PHT were prominent in organic solvent (THF), high water contents (at 90% H2 O) and acidic conditions. Upon UV-irradiation ofP-PHT at 90% water content, the AIE of TPE was completely quenched via an energy transfer event from TPE to cyclized DAE. Interestingly, the rare monomeric emission of TPE was first discovered by the photo-cyclization of DAE inP-PHT compared with the AIE behaviour of TPE with the open form of DAE inP-PHT with AIE favourable conditions of high water content (90% H2 O) and acidic conditions.