用於電致磷光變色和可見光誘導交叉脫氫偶聯的磷光生物原材料
作者:
小柯機器人發布時間:2021/1/7 13:17:28
西安交通大學何剛團隊研究開發了用於電致磷光變色和可見光誘導交叉脫氫偶聯的磷光生物原材料。 該研究成果發表在2021年1月3日出版的國際學術期刊《美國化學會志》。
該文報導了由鉍原子與紫精框架結合合成的一系列新型Bi橋聯紫精異構體分子(BiV2+)。通過對紫精分子中的N進行芳基化或烷基化反應,對其光學和電化學性能進行了微調。這種含Bi紫精分子有較好的還原性,同時在空氣、室溫的溫和條件中具有磷光效應。這一現象使得BiV2+成為迄今為止報導的第一個磷光紫精類似物。利用BiV2+優異的氧化還原和光學性質,製備了它們的電致變色器件。
此外,首次將BiV2+作為可見光誘導交叉脫氫偶聯反應的光催化劑和電子介質。
附:英文原文
Title: Phosphorescent Bismoviologens for Electrophosphorochromism and Visible Light-Induced Cross-Dehydrogenative Coupling
Author: Wenqiang Ma, Letian Xu, Sikun Zhang, Guoping Li, Tianyu Ma, Bin Rao, Mingming Zhang, Gang He
Issue&Volume: January 3, 2021
Abstract: A series of novel bismuth-bridged viologen analogues, bismoviologens (BiV2+), synthesized through a combination of a bismuth atom and viologen skeleton is reported. Their optical and electrochemical properties were fine-tuned through the N-arylation or N-alkylation reactions. Bismolviologens not only showed good redox properties but also exhibited phosphorescence under ambient conditions (in air at room temperature). This phenomenon makes BiV2+ the first examples of phosphorescent viologen analogues reported to date. On the basis of the excellent and unique redox and optical properties of BiV2+, their electrophosphorochromic devices were fabricated. Furthermore, BiV2+ was used for the first time as both a photocatalyst and electron mediator in visible light-induced cross-dehydrogenative coupling reactions.
DOI: 10.1021/jacs.0c12015
Source: https://pubs.acs.org/doi/10.1021/jacs.0c12015