Color-Tunable Room-Temperature Phosphorescence from Non-Aromatic-Polymer-Involved Charge Transfer

Overview

Journal Adv Sci (Weinh)

Specialty Biomedical Engineering

Date 2024 Jun 14

PMID 38874342

Authors

Ningyan Li

Xipeng Yang

Binbin Wang

Panyi Chen

Yixian Ma

Qianqian Zhang

Yiyao Huang

Yan Zhang

Shaoyu Lu

Affiliations

Soon will be listed here.

Abstract

Polymeric room-temperature phosphorescence (RTP) materials especially multicolor RTP systems hold great promise in concrete applications. A key feature in these applications is a triplet charge transfer transition. Aromatic electron donors and electron acceptors are often essential to ensure persistent RTP. There is much interest in fabricating non-aromatic charge-transfer-mediated RTP materials and it still remains a formidable challenge to achieve color-tunable RTP via charge transfer. Herein, a charge-transfer-mediated RTP material by embedding quinoline derivatives within a non-aromatic polymer matrix such as polyacrylamide (PAM) or polyvinyl alcohol (PVA) is developed. Through-space charge transfer (TSCT) is achieved upon alkali- or heat treatment to realize a long phosphorescence lifetime of up to 629.90 ms, high phosphorescence quantum yield of up to 20.51%, and a green-to-blue afterglow for more than 20 s at room temperature. This color-tunable RTP emerges from a nonaromatic polymer to single phosphor charge transfer that has rarely been reported before. This finding suggests that an effective and simple approach can deliver new color-tunable RTP materials for applications including multicolor display, information encryption, and gas detection.

Citing Articles

Color-Tunable Room-Temperature Phosphorescence from Non-Aromatic-Polymer-Involved Charge Transfer.

Li N, Yang X, Wang B, Chen P, Ma Y, Zhang Q Adv Sci (Weinh). 2024; 11(30):e2404698.

PMID: 38874342 PMC: 11321690. DOI: 10.1002/advs.202404698.

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