Abstract Various luminescent organic-inorganic metal halide hybrid materials focus on fluorescence modulation. The commonly method to tunes the luminescence is usually via either modifying the structure of the inorganic anionic or the cation moiety. We here show the first time to modulate the fluorescent emission by inserting neutral organic molecules. The synthesis, crystal structure and optical properties of three organic-inorganic hybrids, [HEV][BiCl5] (1), [MV]3[Bi4Cl18]·[C16H10] (2) and [MV]3[Bi4Cl18]·[C20H12] (3) ([HEV]2+ = N-proton-N′-ethyl-4,4′-bipyridinium, [MV]2+ = N,N′-dimethyl-4,4′-bipyridinium) were demonstrated. The compounds contain MV2+ cations, bismuth (III)-chloro anions and pyrene or perylene molecules achieve fluorescence modulation upon the insertion of neutral molecules.

中文翻译：

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通过中性分子修饰具有可调红光发射的发光无机-有机杂化物

摘要 各种发光的有机-无机金属卤化物杂化材料专注于荧光调制。调节发光的常用方法通常是通过改变无机阴离子或阳离子部分的结构。我们在这里首次展示了通过插入中性有机分子来调节荧光发射。三种有机-无机杂化物[HEV][BiCl5] (1)、[MV]3[Bi4Cl18]·[C16H10] (2)和[MV]3[Bi4Cl18]·[C20H12]的合成、晶体结构和光学性质] (3) ([HEV]2+ = N-质子-N'-乙基-4,4'-联吡啶鎓，[MV]2+ = N,N'-二甲基-4,4'-联吡啶鎓)。该化合物含有 MV2+ 阳离子、铋 (III)-氯阴离子和芘或苝分子，通过插入中性分子实现荧光调制。