In this study, one Zn-viologen complex, named [Zn₃(Hbdpd)(bdpd)(Cl)(Bbpy)] (1) (BbpyCl₂ = 1,1′'-[(4,4′-biphenylylene)bismethylene]bis(4,4′-bipyridine)·2chloride; H₄bdpd = 2,6-bis (3′,5′-dicarboxyphenyl) pyridine) has been constructed via a self-assembly method. Compound 1 features a 3D pillared layer dense framework and shows excellent photochromic properties from yellow to blue when exposed to 365 nm light at intensity of 500 µw/cm² for 30 min. More interestingly, complex 1 displays light green fluorescence with quantum yield of 6.1% and reversible naked-eye photoswitchable luminescence at room-temperature in the solid state upon 365 nm UV excitation. Based on the multicolor photochromic behavior and photoswitchable luminescent property of compound 1, the finely powdered sample has the potential application for UV detection in real world.

在这项研究中，一种 Zn-viologen 配合物，命名为 [Zn ₃ (Hbdpd)(bdpd)(Cl)(Bbpy)] ( 1 ) (BbpyCl ₂  = 1,1''-[(4,4'- biphenyylene ) bismethylene ]bis(4,4'-bipyridine)·2chloride; H ₄ bdpd = 2,6-bis (3',5'-dicarboxyphenyl) pyridine) 已通过自组装方法构建。化合物1具有 3D 柱状层致密框架，当暴露于 365 nm 光强度为 500 µw/cm 2 30 分钟时，显示出从黄色到蓝色的出色光致变色^特性。更有趣的是，复数1在 365 nm 紫外激发下，在固态下在室温下显示量子产率为 6.1% 的浅绿色荧光和可逆的裸眼光开关发光。基于化合物1的多色光致变色行为和光开关发光特性，精细粉末样品在现实世界中具有紫外检测的潜在应用。