Yu Lu, Liu Feng, Ji Guanfeng, Wang Xiaojia, Wang Hongbo, Chen Gang, Zhang Yuhai, Yan Mei, Wang Wenshou
School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
J Colloid Interface Sci. 2025 May 15;686:192-202. doi: 10.1016/j.jcis.2025.01.239. Epub 2025 Jan 28.
The multifunctional and reversible stimuli-responsive luminescence switching offers significant potential for advanced photonic applications but presents considerable challenges for zero-dimensional (0D) hybrid halides. In this study, we design two 0D Mn(II)-based hybrid halides, (DMAP)MnCl·HO and (DMAP)MnCl (DMAP = protonated 4-dimethylaminopyridine), which demonstrate reversible photoluminescence (PL) and radioluminescence (RL) switching through the removal/insertion of guest HO and single-crystal to single-crystal (SC-SC) transformation. By employing a one-step electrospinning strategy, the composite nanofiber film benefits from geometric confinement and the superior hydrophobicity of the PVDF matrix, exhibiting excellent reversible PL switching properties, remarkable repeatability (1000 cycles), and rapid response to breath (0.6 s). Notably, the composite nanofiber film achieves a rare triple-mode reversible PL switching, including off-on (green), color-tunable on-on (green-yellow), and on (yellow)-off modes. This innovative composite holds great potential for novel applications in molecular-level dynamic photonic devices, including data storage, information security, optical logic gates, and flexible X-ray imaging.
多功能且可逆的刺激响应发光切换为先进的光子应用提供了巨大潜力，但对零维（0D）混合卤化物而言却带来了相当大的挑战。在本研究中，我们设计了两种基于0D Mn（II）的混合卤化物，（DMAP）MnCl·H₂O和（DMAP）MnCl（DMAP = 质子化的4-二甲基氨基吡啶），它们通过客体H₂O的去除/插入以及单晶到单晶（SC-SC）转变展现出可逆的光致发光（PL）和辐射发光（RL）切换。通过采用一步电纺丝策略，复合纳米纤维膜受益于几何限制和PVDF基质的优异疏水性，表现出优异的可逆PL切换性能、显著的重复性（1000次循环）以及对呼吸的快速响应（0.6秒）。值得注意的是，复合纳米纤维膜实现了罕见的三模式可逆PL切换，包括关-开（绿色）、颜色可调的开-开（绿-黄）和开（黄色）-关模式。这种创新的复合材料在分子级动态光子器件的新应用中具有巨大潜力，包括数据存储、信息安全、光学逻辑门和柔性X射线成像。
