Red-light excited efficient metal-free near-infrared room-temperature phosphorescent films

• 作者: Siyu Sun Liangwei Ma Jie Wang Xiang Ma He Tian
• 来源期刊: 国家科学评论（英文版）
• 年，卷（期）: 2022,（2）
• 所属期刊栏目: RESEARCH ARTICLES
• 页码范围: 65-72
• 页数: 8页
• 语种: 英文

摘要

A set of red-light-excited,metal-free room-temperature phosphorescence(RTP)systems was constructed with brominated phenolsulfonephthaleine derivatives.The best metal-free RTP system has the reddest near-infrared(NIR)RTP emission(λp=819 nm)with the highest phosphorescence quantum yield(ΦRTP=3.0％)so far identified.The RTP emission can be switched ON-OFF by adding acid and alkali alternately.A logic operation with half-subtractor function and dual-channel response(visible light emission/NIR RTP emission)was also constructed based on these properties.