Near-Infrared Emission Beyond 900 nm from Stable Radicals in Nonconjugated Poly(diphenylmethane)

This study addresses these limitations by achieving stable radicals in nonconjugated poly(diphenylmethane) (PDPM). Notably, PDPM exhibits a well-balanced structural flexibility and rigidity, resulting in a robust intra-/inter-chain through-space conjugation (TSC). The stable radicals within PDPM, coupled with strong TSC, yield a remarkable full-spectrum emission spanning from blue to NIR beyond 900 nm. This extensive tunability is achieved through careful adjustments of concentration and excitation wavelength. The findings highlight the efficacy of polymerization in stabilizing radicals and introduce a novel approach for developing nonconjugated NIR emitters based on triphenylmethane subunits.PMID:38589299 | DOI:10.1002/anie.202403827

Source: Angewandte Chemie - April 8, 2024 Category: Chemistry Authors: Ziteng Zhang Zuping Xiong Jianyu Zhang Bo Chu Xiong Liu Weihao Tu Lei Wang Jing Zhi Sun Chengjian Zhang Haoke Zhang Xinghong Zhang Ben Zhong Tang Source Type: research