journal article·2025-01-06

Boric Acid Cross-Linking Strategy for Enhancing Room Temperature Phosphorescence of Poly(Vinyl Alcohol)-Doped Films

Yejun Yao, Die Huang, Pengbo Han, Xiaoluo Peng, Xin He, He Xu, Anjun Qin, Ben Zhong Tang

ACS Materials Letters· Volume 7· Issue 1
Publisher page

Abstract

Organic room temperature phosphorescence (RTP) has attracted increasing attention owing to its unique luminous properties and wide applications. However, the trade-off between the phosphorescence quantum yield (Φ Phos ) and the phosphorescence lifetime (τ Phos ) highlights the necessity for developing new strategies to enhance RTP performance. While research often focuses on guest components in polymer-based host–guest RTP systems, the host materials, which provide rigid environments, are less explored. This work introduces a simple and efficient strategy to develop RTP materials with high efficiency and long lifetime by employing covalent cross-linking to modify the rigidity of the polymer matrix. By suppressing nonradiative decay and decreasing luminescence quenching under ambient conditions, not only the Φ Phos of cross-linked films is improved from 3.2% to 13.5%, but also the τ Phos is extended from 482.34 to 625.23 ms. Thanks to its solution processability and water sensitivity, this RTP system was successfully applied in inkjet printing and binary anticounterfeiting.
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Research context

OpenAlex topics: Luminescence and Fluorescent Materials · Organic Light-Emitting Diodes Research · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates

South China University of Technology

Center for Aggregation-Induced Emission

AIE Institute, South China University of Technology

School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology

The Chinese University of Hong Kong

Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration and Reconstruction

The Hong Kong University of Science & Technology

Funding

Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology · Innovation and Technology Commission · State Key Laboratory of Luminescent Materials and Devices · National Natural Science Foundation of China

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