近日，三峡大学肖述章团队报道了具有可控超长室温磷光和快速响应的非常规有机凝胶的卤素效应。这一研究成果发表在2026年3月2日出版的《结构化学》杂志上。

具有超长有机室温磷光特性的超分子凝胶对外部刺激高度敏感，在动态防伪应用中展现出巨大潜力。尽管研究组前期工作已成功开发出数种具有超长室温磷光性质的超分子有机凝胶，但其磷光量子产率因分子间相互作用相对较弱而普遍偏低。

研究组设计合成了两种新型卤素功能化的超长室温磷光有机凝胶因子（m-ClPBCM和m-BrPBCM）。卤键的引入不仅保留了凝胶形成能力，还显著提升了磷光量子产率。其中，m-BrPBCM凝胶表现出最高的磷光量子产率（2.12%，优于m-ClPBCM的1.7%，且较未溴代的m-PBCM提升逾八倍），其磷光寿命长达203.8毫秒。此外，无论湿态还是干态的m-BrPBCM凝胶，在快速加热和冷却过程中均展现出可逆的磷光开关行为，具有秒级的刺激响应性能。该工作为动态防伪应用提供了极具潜力的候选材料。

附：英文原文

Title: Halogen effect on non-conventional organogel with controlled ultra-long room temperature phosphorescence and fast-response

Author: anonymous

Issue&Volume: 2026-03-02

Abstract: Supramolecular gels exhibiting ultra-long organic room temperature phosphorescence (RTP) are highly sensitive to external stimuli and show great potential for dynamic anti-counterfeiting applications. While our previous work successfully developed several supramolecular organogels with ultra-long RTP properties, their phosphorescence quantum yields remained relatively low, likely due to comparatively weak intermolecular interactions. In this study, two novel halogen-functionalized ultralong RTP organogelator (m-ClPBCM and m-BrPBCM) were designed and synthesized. The introduction of halogen bonding not only preserves the gelation capability but also enhances the phosphorescence quantum yield. Especially, the m-BrPBCM gel exhibits the highest phosphorescence quantum yield (2.12%, surpassing m-ClPBCM at 1.7% and exceeding the non-brominated m-PBCM by more than eightfold), with a lifetime reaching 203.8 ms. Moreover, both wet and dry m-BrPBCM gels display reversible phosphorescence switching upon rapid heating and cooling, demonstrating second-scale stimuli-responsive performance. This work provides promising candidates for dynamic anti-counterfeiting applications.

DOI: 10.1016/j.cjsc.2026.100919

Source: https://cjsc.ac.cn/cms/issues/1014