Chinese Journal of Organic Chemistry >
Construction and Properties of Flexible Light-Emitting Materials Based on Tetraphenylethylene
Received date: 2024-03-30
Revised date: 2024-05-23
Online published: 2024-06-13
Supported by
State Key Laboratory of Polyolefins and Catalysis and Shanghai Key Laboratory of Catalysis Technology for Polyolefins(SKL-LCTP-202301); State Key Laboratory for Mechanical Behavior of Materials(20222409)
Flexible light-emitting materials find broad applications across various realms of technical production owing to their capacity to uphold structural integrity and luminescent efficacy amidst diverse external forces. In this study, a range of flexible light-emitting materials featuring tunable fluorescence intensity have been synthesized with tetraphenylethylene as the chromophore group, employing a highly efficient thiol-ene click polymerization. By adjusting the ratio of thiol monomers with varying functional degrees involved in polymerization, a polymer network with superior mechanical properties is achieved. This network exhibits an elongation at break of 377%, a fracture stress of 33.0 MPa, and an impressive toughness of up to 90.6 MJ/m3. Because of the changes of molecular conformation owing to the external forces, the fluorescence quantum yield of the materials rises in tandem with the degree of stretching. Additionally, fluorescence quenching is observed following swelling, and the fluorescence re-emerging upon solvent volatilization, aligning with the principles of aggregation-induced emission. Drawing from the aforementioned study, this flexible light-emitting materials exhibit exceptional mechanical characteristics and tunable fluorescence intensity, poised to find practical utility in the realm of light-emitting sensors and signal detection.
Yuanhao Wang , Yukai Sun , Yuhang Liu , Zhaoming Zhang , Xuzhou Yan . Construction and Properties of Flexible Light-Emitting Materials Based on Tetraphenylethylene[J]. Chinese Journal of Organic Chemistry, 2024 , 44(8) : 2538 -2544 . DOI: 10.6023/cjoc202403051
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