期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202301109
关键词
Conjugation; Donor-Acceptor Systems; Electrochemistry; Lewis Acid; Supramolecular Chemistry
This study presents a method for stabilizing electrogenerated radical ions by effectively decorating organic donor-acceptor diads with B(C6F5)(3). By employing the p-type organic semiconductor benzothienobenzothiophene (BTBT) as the donor, tetracoordinate boron complexes show improved solution electrochemiluminescence (ECL) intensity. The Lewis-pairing-induced ECL enhancement is attributed to the multiple roles of B(C6F5)(3) in redistributing frontier orbitals, facilitating electrochemical excitation, and restricting molecular motions.
This study reports an effective peripheral decoration of organic donor-acceptor diads with B(C6F5)(3) for stabilizing electrogenerated radical ions. By employing a common p-type organic semiconductor benzothienobenzothiophene (BTBT) as the donor, tetracoordinate boron complexes showed improved solution electrochemiluminescence (ECL) intensity, reaching a 156-fold increase compared to that of the parent diad. The unprecedented Lewis-pairing-induced ECL enhancement is attributed to the multiple roles of B(C6F5)(3): 1) redistributing frontier orbitals, 2) facilitating electrochemical excitation, and 3) restricting molecular motions. Furthermore, B(C6F5)(3) converted the molecular arrangement of BTBT from conventional 2D herringbones into 1D pi-stacks. This robust, highly ordered columnar nanostructure allowed red-shifting of the crystalline film ECL with electrochemical doping through the electronic coupling pathways of BTBT. Our approach will facilitate the development of elaborate metal-free ECL systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据