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Rational Design of Multicolor‐Emitting Chiral Carbonized Polymer Dots for Full‐Color and White Circularly Polarized Luminescence
Author(s) -
Ru Yi,
Sui Laizhi,
Song Haoqiang,
Liu Xingjiang,
Tang Zhiyong,
Zang ShuangQuan,
Yang Bai,
Lu Siyu
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202103336
Subject(s) - luminescence , materials science , quantum yield , polymer , supramolecular chemistry , nanotechnology , white light , photonics , self assembly , optoelectronics , photochemistry , fluorescence , chemistry , optics , crystallography , crystal structure , physics , composite material
Light‐emitting chiral carbonized polymer dots (Ch‐CPDs) are attracting great interest because of their extraordinary photonic properties, but modulating their band‐gap emission, especially at long wavelength, and maintaining their chiral structure to achieve multicolor, high‐emission Ch‐CPDs remains challenging. Reported here for the first time is the synthesis of red‐ and multicolor‐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 multicolor‐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. This strategy affords exciting opportunities for designing functional chiroptical materials.