Triphenylmethane-based single-component Ultralong room temperature phosphorescence

Yipeng Zhang; Hong Pan; Zhuofan Jiang; Chiming Li; Xianyin Dai; Huaying Lv; Yanqing Ge

doi:10.1016/j.saa.2025.126590

Triphenylmethane-based single-component Ultralong room temperature phosphorescence

Spectrochim Acta A Mol Biomol Spectrosc. 2025 Jun 19:343:126590. doi: 10.1016/j.saa.2025.126590. Online ahead of print.

Authors

Yipeng Zhang¹, Hong Pan², Zhuofan Jiang¹, Chiming Li¹, Xianyin Dai¹, Huaying Lv³, Yanqing Ge⁴

Affiliations

¹ School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China.
² School of Intelligent Medical Technology, Dazhou Vocational and Technical College, Dazhou 635001, China.
³ The Eighth People's Hospital of Jinan, Laiwu 271126, China. Electronic address: lhy3432yanan@163.com.
⁴ School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China. Electronic address: yqge@sdfmu.edu.cn.

PMID: 40577960
DOI: 10.1016/j.saa.2025.126590

Abstract

Triphenylmethane (TPM) dyes, as one of largest classes of commercial colorants, have been widely used in industry such as dying processes, antifungal agents in aquaculture, cell staining and analytical chemistry. Here a simple triphenylmethane derivatives showing ultralong room temperature phosphorescence (RTP) in air was described. Tris(2-methoxyphenyl)methane (TMPM) displays ultralong lifetimes of 0.74 s (crystal state, 298 K) and 1.15 s (THF solution, 77 K) and phosphorescence efficiency of 5.3 %. Single crystal analysis and theoretical calculation show that RTP phosphorescence might be determined by the space packing of molecules in solid-state. The present finding may update the application of triphenylmethane dyes and open a new chapter in the ultralong organic phosphorescence (UOP) research of triphenylmethane derivatives.

Keywords: Room temperature phosphorescence; Single-component; Triphenylmethane.