当前位置:科学网首页 > 小柯机器人 >详情
改变脂肪族聚酯链的柔韧性可实现38%量子产率的黄绿色团簇发光
作者:小柯机器人 发布时间:2021/11/28 13:19:15

浙江大学张兴宏研究团队通过改变脂肪族聚酯链的柔韧性实现38%量子产率的黄绿色团簇发光。相关论文于2021年11月25日在线发表在《德国应用化学》杂志上。

研究人员报告了第一个表现出黄绿色团簇发光(CL)和38%高量子产率(QY)的线性非共轭聚酯。研究人员发现,具有平衡灵活性和刚性的聚酯P3显示出最长的CL波长和最高的QY。系统的光物理表征揭示了酯类团簇在发光中的关键作用,并且通过酯类单元的聚集形成的团簇被可视化。

此外,P3被证明是一个高选择性、快速反应(约1.2分钟)和敏感的检测器(检测极限为0.78μM),这是因为团簇被铁元素快速解离。这项工作不仅从机理上进一步了解了CL,而且为设计高效率和长波长的CL提供了一个新的策略,同时也启迪了发光聚酯的辉煌应用前景。

据介绍,具有长波长发射和高QY的非共轭聚合物的制备仍然是一个巨大的挑战。

附:英文原文

Title: Altering Chain Flexibility of Aliphatic Polyesters for Yellow-green Clusteroluminescence in 38% Quantum Yield

Author: Bo Chu, Haoke Zhang, Lanfang Hu, Bin Liu, Chengjian Zhang, Xinghong Zhang, Ben Zhong Tang

Issue&Volume: 2021-11-25

Abstract: Preparation of non-conjugated polymers with long-wavelength emission and high quantum yield (QY) is still a huge challenge. Herein, we report the first example of linear non-conjugated polyester exhibiting yellow-green clusteroluminescence (CL) and a high QY of 38%. We discovered that the polyester P3 with balanced flexibility and rigidity showed the longest CL wavelength and highest QY. Systematically photophysical characterization unravel the key role of ester cluster in the CL and the cluster formation via the aggregate of ester units was visualized. Moreover, P3 was demonstrated to be a highly selective, quick-responsive (~1.2 min) and sensitive detector (detection limit is 0.78 μM) for irons owing to the fast disassociation of clusters by irons. This work not only gains further mechanistic insight into CL but also provides a new strategy to design high-efficiency and long-wavelength CL, meanwhile, enlightens the glorious application prospect of luminescent polyester.

DOI: 10.1002/anie.202114117

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202114117

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