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

Authors :: Yang J
Ma YX
Zong Y
Sun M
Wang Y
Zhang RL
Feng J
Wang CZ
Zhuo SP
Zhou J
Shi YL
Chen SH
Wang XD
Lin HT
Source :: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 May; Vol. 20 (20), pp. e2307129. Date of Electronic Publication: 2023 Dec 21.
Publication Year :: 2024
Abstract: 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 <subscript>(x)</subscript> -Pe <subscript>(1-x)</subscript> , p-TCP-Cor <subscript>(x)</subscript> -Pe <subscript>(1-x)</subscript> , and o-TCP-AN <subscript>(x)</subscript> -TP <subscript>(1-x)</subscript> 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.<br /> (© 2023 Wiley‐VCH GmbH.)

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