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全彩色和白色圆偏振发光用多色发射手性碳化聚合物点的合理设计
作者:小柯机器人 发布时间:2021/4/11 17:30:56

郑州大学卢思宇团队报道了全彩色和白色圆偏振发光用多色发射手性碳化聚合物点的合理设计策略。相关研究成果发表在2021年4月8日出版的《德国应用化学》。

发光手性碳化聚合物点(Ch-CPD)由于其特殊的光子特性而引起了人们的极大兴趣,但是调制其带隙发射,特别是在长波长下,并保持其手性结构以实现多色、高发射Ch-CPD仍然具有挑战性。

该文中,研究人员首次报道了在一个温度下使用常见前体L/D-色氨酸和邻苯二胺以及溶剂热方法合成红色和多色发光Ch-CPD。Ch-CPD的量子产率在31%到54%之间。超分子自组装提供的多色发射Ch-CPD显示出新颖的圆偏振发光,具有最高不对称因子(glum)为1×102。重要的是,通过调节凝胶中三种彩色Ch-CPD的混合比,首次制备了圆偏振白色发射CPD。

该策略为设计功能性光学材料提供了令人兴奋的机会。

附:英文原文

Title: Rational Design of Multi‐color‐emitting Chiral Carbonized Polymer Dots for Full‐color and White Circularly Polarized Luminescence

Author: Yi Ru, Laizhi Sui, Haoqiang Song, Xingjiang Liu, Zhiyong Tang, Shuang-Quan Zang, Bai Yang, Siyu Lu

Issue&Volume: 2021-04-08

Abstract: Light‐emitting chiral carbonized polymer dots (Ch‐CPDs) are attracting great interest due to their extraordinary photonic properties, but modulating their bandgap emission, especially at long wavelength, and maintaining their chiral structure to achieve multi‐color, high‐emission Ch‐CPDs remains challenging. Here we report for the first time the synthesis of red‐ and multi‐color emitting Ch‐CPDs using the common precursors L‐/D‐tryptophan and o‐phenylenediamine and a solvothermal approach at one temperature. The quantum yield of the Ch‐CPDs was between 31% and 54%. Supramolecular self‐assembly provided multi‐color‐emitting Ch‐CPDs showing novel circularly polarized luminescence, with the highest dissymmetric factor (g  lum  ) of 1 × 10  2  . Importantly, circularly polarized white‐emitting CPDs were fabricated for the first time by tuning the mixing ratio of the three colored Ch‐CPDs in a gel. Our strategy affords exciting opportunities for designing functional chiroptical materials.

DOI: 10.1002/anie.202103336

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202103336

期刊信息

Angewandte Chemie:《德国应用化学》,创刊于1887年。隶属于德国化学会,最新IF:12.959
官方网址:https://onlinelibrary.wiley.com/journal/15213773
投稿链接:https://www.editorialmanager.com/anie/default.aspx