Volume 62, Issue 50 e202314273
Communication

Microwave-Responsive Flexible Room-Temperature Phosphorescence Materials Based on Poly(vinylidene fluoride) Polymer

Yongfeng Zhang

Yongfeng Zhang

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Wei Zhang

Wei Zhang

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Junming Xia

Junming Xia

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Chenchen Xiong

Chenchen Xiong

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Gengchen Li

Gengchen Li

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Prof. Xiaodong Li

Prof. Xiaodong Li

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Dr. Peng Sun

Dr. Peng Sun

Advanced Research Institute of Multidisciplinary Sciences, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Dr. Jianbing Shi

Dr. Jianbing Shi

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Prof. Bin Tong

Prof. Bin Tong

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Prof. Zhengxu Cai

Corresponding Author

Prof. Zhengxu Cai

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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Prof. Yuping Dong

Corresponding Author

Prof. Yuping Dong

School of Materials Science and Engineering, Beijing Institute of Technology, 5 South Zhongguancun street, Haidian district, Beijing, 100081 P. R. China

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First published: 26 October 2023
Citations: 29

Graphical Abstract

A breakthrough in room-temperature phosphorescence (RTP) emission performance was realized in a poly(vinylidene fluoride) (PVDF) matrix with a low glass transition temperature. Polymorph-dependent RTP emission in the PVDF matrix endows a 2.45 GHz microwave stimulus responsiveness to the material.

Abstract

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.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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