文献类型：期刊文献

英文题名：Achieving visible-light-excited organic room-temperature phosphorescence by manipulating p-π conjugation

作者：Xu, Qingyang;Ma, Liangwei;Sun, Siyu;Ma, Xiang[1]

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

年份：2021

卷号：9

期号：41

起止页码：14623

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY C

收录：;EI(收录号：20214511139367);WOS:【SCI-EXPANDED(收录号:WOS:000705637400001)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (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), the Innovation Program of Shanghai Municipal Education Commission (2017 01-07-00-02-E00010), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Light - Red Shift - Absorption spectra - Naphthalene - Molecules

摘要：The development of organic room-temperature phosphorescence (RTP) materials has been a rich research field. However, there are still limited practical and directive strategies to regulate the phosphorescence emission. Herein, six naphthalene-based thiochromanone analogs with different heterocycles were synthesized. And all these molecules exhibited bright phosphorescence when embedded into a polyvinyl alcohol matrix under ambient conditions. The absorption spectra showed a distinct red-shift as the size of the heterocycle shrunk, which resulted from the facilitated p-pi conjugation. In particular, the absorption spectra of molecules with a five-membered heterocycle were extended to visible light, which is rarely reported for RTP materials. These results might present a new strategy to adjust the photophysical properties of phosphors to obtain phosphorescence materials with the desired excitation and emission wavelength.