Precise Synthesis of Organic Cocrystal Alloys with Full‐Spectrum Emission Characteristics for the Stepless Color Changing Display

Organic luminescent materials are indispensable in optoelectronic displays and solid‐state luminescence applications. Compared with single‐component, multi‐component crystalline materials can improve optoelectronic characteristics. This work forms a series of full‐spectrum tunable luminescent charge...

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Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2024-05, Vol.20 (20), p.e2307129-n/a
Main Authors: Yang, Jing, Ma, Ying‐Xin, Zong, Yi, Sun, Mao, Wang, Yun, Zhang, Ren‐Long, Feng, Jin, Wang, Chuan‐Zeng, Zhuo, Shu‐Ping, Zhou, Jin, Shi, Ying‐Li, Chen, Shu‐Hai, Wang, Xue‐Dong, Lin, Hong‐Tao
Format: Article
Language:English
Subjects:
charge‐transfer cocrystals
Color
Displays
full‐spectrum tunable luminescent
molecular self‐assembly
Optoelectronics
Self-assembly
Semiconductor materials
stepless color change
three‐component alloys
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Summary:Organic luminescent materials are indispensable in optoelectronic displays and solid‐state luminescence applications. Compared with single‐component, multi‐component crystalline materials can improve optoelectronic characteristics. This work forms a series of full‐spectrum tunable luminescent charge‐transfer (CT) cocrystals ranging from 400 to 800 nm through intermolecular collaborative self‐assembly. What is even more interesting is that o‐TCP‐Cor(x)‐Pe(1−x), p‐TCP‐Cor(x)‐Pe(1−x), and o‐TCP‐AN(x)‐TP(1−x) alloys are prepared based on cocrystals by doping strategies, which correspondingly achieve the stepless color change from blue (CIE [0.22, 0.44]) to green (CIE [0.16, 0.14]), from green (CIE [0.27, 0.56]) to orange (CIE [0.58, 0.42]), from yellow (CIE [0.40, 0.57]) to red (CIE [0.65, 0.35]). The work provides an efficient method for precisely synthesizing new luminescent organic semiconductor materials and lays a solid foundation for developing advanced organic solid‐state displays. The CT cocrystal emitting from blue to red light is prepared, and the system has full‐spectrum emission from 400 to 800 nm. On this basis, three three‐component alloy systems are designed to realize stepless color change from red to blue light and provide new materials for multi‐color display, imaging, and solid light sources.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.202307129