文献类型：期刊文献

英文题名：Vintages for New Fashion: Red-Shifted Photoswitching via the Triplet-Photoreaction Channel with Charge-Transfer Complex Sensitizers

作者：Wang, Wenhui[1,2];Dai, Jinghong[1,2];Zhang, Zhiwei[1,2];Zhang, Junji[1,2];Tian, He[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Frontiers Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Feringa Nobel Prize Scientist, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Joint Int Res Lab Precis Chem & Mol Engn, Sch Chem & Mol Engn,Frontiers Ctr Materiobiol & Dy, Shanghai 200237, Peoples R China

年份：2025

卷号：147

期号：6

起止页码：5486

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20250617833969);WOS:【SCI-EXPANDED(收录号:WOS:001408979800001)】；

基金：This work is supported by NSFC (22122803, 22101084, and 22378121), the Science and Technology Commission of Shanghai Municipality (24DX1400200), and the Fundamental Research Funds for the Central Universities (222201717003). J.Z. acknowledges the Shanghai Natural Science Foundation Project (23ZR1479500 and 23JC1401700). The authors wish to acknowledge Yun Ma and Juan Wei for help in information printing.

语种：英文

外文关键词：Alkylation - Complexation - Laser beams - Photochromism - Red Shift

摘要：Triplet-sensitization has been proven invaluable for creating photoswitches operated over a full visible-light spectrum. While designing efficient triplet-sensitizers is crucial for establishing visible-light photochromism, it remains an appealing yet challenging task. In this work, we propose a versatile strategy to fabricate triplet-sensitizers with intermolecular charge-transfer complexes (CTCs). Through fine-tuning interactions between various donor and acceptor units, a series of CTC sensitizers were prepared with intensified visible-light absorption and a distinctive narrow Delta E ST feature. By virtue of this, a bidirectional visible-light photochromism (475 nm/605 nm) was achieved via integrating CTC sensitizers with classic diarylethene (DAE) photoswitches in various substrates upon triplet photoreaction pathways. Proof-of-concept applications, such as photoresponsive printing and mechanic-facilitated inkpad, were subsequently presented. The flexible accessibility and tunability of CTC sensitizers facilitate both generalized and customized production of photoresponsive systems that operate within the visible-light region.