TY - JOUR
T1 - Microwave-Responsive Flexible Room-Temperature Phosphorescence Materials Based on Poly(vinylidene fluoride) Polymer
AU - Zhang, Yongfeng
AU - Zhang, Wei
AU - Xia, Junming
AU - Xiong, Chenchen
AU - Li, Gengchen
AU - Li, Xiaodong
AU - Sun, Peng
AU - Shi, Jianbing
AU - Tong, Bin
AU - Cai, Zhengxu
AU - Dong, Yuping
N1 - Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/12/11
Y1 - 2023/12/11
N2 - The development of flexible, room-temperature phosphorescence (RTP) materials remains challenging owing to the quenching of their unstable triplet excitons via molecular motion. Therefore, a polymer matrix with Tg higher than room temperature is required to prevent polymer segment movement. In this study, a RTP material was developed by incorporating a 4-biphenylboronic acid (BPBA) phosphor into a poly(vinylidene fluoride) (PVDF) matrix (Tg=−27.1 °C), which exhibits a remarkable UV-light-dependent oxygen consumption phosphorescence with a lifetime of 1275.7 ms. The adjustable RTP performance is influenced by the crystallinity and polymorph (α, β, and γ phases) fraction of PVDF, therefore, the low Tg of the PVDF matrix enables the polymeric segmental motion upon microwave irradiation. Consequently, a reduction in the crystallinity and an increase in the α phase fraction in PVDF film induces RTP after 2.45 GHz microwave irradiation. These findings open up new avenues for constructing crystalline and phase-dependent RTP materials while demonstrating a promising approach toward microwave detection.
AB - The development of flexible, room-temperature phosphorescence (RTP) materials remains challenging owing to the quenching of their unstable triplet excitons via molecular motion. Therefore, a polymer matrix with Tg higher than room temperature is required to prevent polymer segment movement. In this study, a RTP material was developed by incorporating a 4-biphenylboronic acid (BPBA) phosphor into a poly(vinylidene fluoride) (PVDF) matrix (Tg=−27.1 °C), which exhibits a remarkable UV-light-dependent oxygen consumption phosphorescence with a lifetime of 1275.7 ms. The adjustable RTP performance is influenced by the crystallinity and polymorph (α, β, and γ phases) fraction of PVDF, therefore, the low Tg of the PVDF matrix enables the polymeric segmental motion upon microwave irradiation. Consequently, a reduction in the crystallinity and an increase in the α phase fraction in PVDF film induces RTP after 2.45 GHz microwave irradiation. These findings open up new avenues for constructing crystalline and phase-dependent RTP materials while demonstrating a promising approach toward microwave detection.
KW - Low Glass-Transition Temperature Matrix
KW - Microwave-Responsive Materials
KW - Polymorph-Dependent Phosphorescence
KW - Room-Temperature Phosphorescence
UR - http://www.scopus.com/inward/record.url?scp=85176142788&partnerID=8YFLogxK
U2 - 10.1002/anie.202314273
DO - 10.1002/anie.202314273
M3 - Article
C2 - 37885123
AN - SCOPUS:85176142788
SN - 1433-7851
VL - 62
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 50
M1 - e202314273
ER -