作者
Chenkun Zhou, Haoran Lin, Hongliang Shi, Yu Tian, Chongin Pak, Michael Shatruk, Yan Zhou, Peter Djurovich, Mao‐Hua Du, Biwu Ma
发表日期
2018/1/22
期刊
Angewandte Chemie
卷号
130
期号
4
页码范围
1033-1036
简介
The synthesis and characterization is reported of (C9NH20)2SnBr4, a novel organic metal halide hybrid with a zero‐dimensional (0D) structure, in which individual seesaw‐shaped tin (II) bromide anions (SnBr42−) are co‐crystallized with 1‐butyl‐1‐methylpyrrolidinium cations (C9NH20+). Upon photoexcitation, the bulk crystals exhibit a highly efficient broadband deep‐red emission peaked at 695 nm, with a large Stokes shift of 332 nm and a high quantum efficiency of around 46 %. The unique photophysical properties of this hybrid material are attributed to two major factors: 1) the 0D structure allowing the bulk crystals to exhibit the intrinsic properties of individual SnBr42− species, and 2) the seesaw structure enabling a pronounced excited state structural deformation as confirmed by density functional theory (DFT) calculations.
引用总数
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