An organic–inorganic hybrid species based on the Wells–Dawson polyoxotungstate [P₂W₁₈O₆₂]⁶⁻ and novel fluorescent benzothiadiazole–imidazolium cations, [BTD-4,7-ImH]²⁺, has been synthesized. X-ray crystallographic analysis shows that the inorganic and organic components form a hydrogen-bonded superstructure and that the cations are revealed to be non-equivalent with varying degrees of rotation between the BTD and imidazolium rings due to competition between weak intra- and intermolecular interactions. The UV–vis diffuse reflectance spectra indicate that the hybrid has a band gap of 3.13 eV, while the solid-state fluorescence properties of the cation are quenched in the hybrid material, suggesting the existence of electron transfer between the inorganic and organic components. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energies of the polyoxometalate (POM) and BTD-4,7-ImH precursors, estimated through UV–vis absorption spectroscopy and cyclic voltammetry, indicate that electron transfer from the BTD cations to the POM may occur in the excited state.

基于Wells-Dawson多氧钨酸盐[P ₂ W ₁₈ O ₆₂ ] ^6-和新型荧光苯并噻二唑-咪唑鎓阳离子[BTD-4,7-ImH] ²⁺的有机-无机杂种，已合成。X射线晶体学分析表明，由于分子内和分子间相互作用较弱，BTD和咪唑鎓环之间的旋转度不同，因此无机和有机成分形成氢键结合的超结构，并且阳离子显示为不等价的。 。UV-vis漫反射光谱表明，杂化材料的带隙为3.13 eV，而阳离子的固态荧光性质在杂化材料中被淬灭，表明在无机和有机成分之间存在电子转移。通过紫外可见吸收光谱法和循环伏安法估计，多金属氧酸盐（POM）和BTD-4,7-ImH前体的最高占据分子轨道（HOMO）和最低未占据分子轨道（LUMO）能量，