文献类型：期刊文献

英文题名：Local Constraints on Junctions to Strengthen Near-Infrared Phosphorescence of Organic Dyes

作者：Sun, Siyu[1];Fan, Yucong[1];Ma, Liangwei[1];Han, You[2];Ma, Xiang[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Frontiers Sci Ctr Mat & Dynam Chem, Key Lab Adv Mat & Feringa Nobel Prize Scientist J, Shanghai 200237, Peoples R China;[2]Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China

年份：2021

卷号：12

期号：49

起止页码：11919

外文期刊名：JOURNAL OF PHYSICAL CHEMISTRY LETTERS

收录：;EI(收录号：20215011330234);WOS:【SCI-EXPANDED(收录号:WOS:000730268500001)】；

基金：We acknowledge the financial support from NSFC (21788102, 22125803, 22020102006, and 21871083), project support by the Shanghai Municipal Science and Technology Major Project (Grant No.2018SHZDZX03), Program of Shanghai Academic/Technology Research Leader (20XD1421300), "Shu Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (19SG26), and the Innovation Program of Shanghai Municipal Education Commission (2017-01-07-0002-E00010). The authors thank Mr. Y. Lu in Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University for helpful discussions on polymer mechanics.

语种：英文

外文关键词：Surface analysis - Quantum yield - Infrared devices - Semiconductor doping - Polyvinyl alcohols - Phosphorescence

摘要：A strategy involving the effect of the local constraint on junctions for doping-induced phosphorescence was proposed to increase the rigidity of hydrogen-bonded polymer to inhibit the nonradiative decay of the organic phosphorescent dyes and was verified by bromophenol blue (BPB) derivatives as the near-infrared (NIR) phosphorescent dye. It is shown that the effect of local constraints on junctions of beta-cyclodextrin in the poly(vinyl alcohol) (PVA-LCPN) matrix can effectively improve the quantum yields of NIR phosphorescence of BPB derivatives. On the basis of the verification and optimization of the system through response surface analysis, the quantum yield of TBPB@PVA-LCPN film based on NIR emission could be increased up to 77% compared with that of TBPB@PVA, reaching 5.3%, and the quantum yield in the NIR region could be improved to 3.6%. The results of response surface analysis are consistent with the phenomenon of our proposed strategy, which can inspire the production of organic materials with NIR RTP emission. Together, this could inform efficient and cheap strategies for increasing the quantum yield of the doping RTP materials.