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Luminescent and Robust Perovskite–Silicone Elastomers Prepared by Light Induced Thiol–Ene Reaction
Author(s) -
Guo Mengdong,
Huang Yue,
Cao Jinfeng,
Xu Yunfan,
Lu Shilong,
Feng Shengyu
Publication year - 2021
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.202000606
Subject(s) - silicone , materials science , elastomer , luminescence , light emitting diode , polymer chemistry , ene reaction , polymer , nanocrystal , halide , composite material , nanotechnology , chemistry , organic chemistry , optoelectronics
The preparation of a series of luminescent perovskite–silicone elastomer (PSE) composites by embedding inorganic lead halide perovskite nanocrystals (CsPbBr 3 NCs) into networks constructed by trimethylolpropane tris(2‐mercaptoacetate) and sulfone‐containing silicone copolymers with vinyl side groups (PSMVS) is reported herein. The networks are obtained by an environmentally friendly thiol–ene cross‐linking reaction under 30 W household LED light. The conducted analysis shows that the prepared PSEs display strong green fluorescence due to encapsulation of CsPbBr 3 NCs, which constitute a luminescent center in sulfone‐containing silicone networks. Using PSMVS as basic polymers instead of commercial polysiloxanes endows PSEs with enhanced mechanical strength and excellent luminescent stability at high temperatures. The PSEs show robust tensile stress and >650% elongation. Additionally, the construction of colorful ultraviolet light‐emitting diodes (UV‐LEDs) by an in situ cross‐linking process is described.