Density‐Dependent Emission Colors from a Conformation‐Switching Chromophore in Polyurethanes

Autor:	Xiaoyan Zheng, Xiaoyu Li, Guanming Liao, Huanzhi Yang, Yunjun Luo, Rui Yan, Yaofang Hu, Guoshuai Du, Yabin Chen, Suning Wang, Junwei Wang
Rok vydání:	2021
Předmět:	Materials science Hydrogen bond General Medicine General Chemistry Chromophore Photochemistry Fluorescence Catalysis Molecular conformation chemistry.chemical_compound Sphere packing chemistry Density dependent High pressure Polyurethane
Zdroj:	Angewandte Chemie International Edition. 61
ISSN:	1521-3773 1433-7851
Popis:	Achieving full-color emission from a single chromophore is not only highly desirable from practical considerations, but also greatly challenging for fundamental research. Herein, we demonstrated the density-dependent emission colors from a single boron-containing chromophore, from which multi-color fluorescent polyurethanes were prepared as well. Originating from its switchable molecular conformations, the emission color of the chromophore was found to be governed by the packing density and strongly influenced by hydrogen bonding interactions. The chromophore was incorporated into polyurethanes to achieve full-color emitting materials; the emission color was only dependent on the chromophore density and could be tuned via synthetic approach by controlling the compositions. The emission colors could also be modulated by physical approaches, including by swelling/deswelling process, compression under high pressure, and even blending the fluorescent polyurethane with non-emitting ones.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6db338846a97d238fe7eab6561f26f56 https://doi.org/10.1002/anie.202112290 Zobrazit plný text záznamu Plný text