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H- and J-aggregates formed from a nontraditional π-gelator depending on the solvent polarity for the detection of amine vapors
Organic & Biomolecular Chemistry ( IF 3.2 ) Pub Date : 2018-09-22 , DOI: 10.1039/c8ob01596a
Jingbo Sun 1, 2, 3, 4, 5 , Chong Qian 1, 2, 3, 4, 5 , Shenzheng Xu 1, 2, 3, 4, 5 , Xiaoyu Jia 1, 2, 3, 4, 5 , Lu Zhai 1, 2, 3, 4, 5 , Jinyu Zhao 1, 2, 3, 4, 5 , Ran Lu 1, 2, 3, 4, 5
Affiliation  

A tert-butyl carbazole-modified difluoroboron β-diketonate complex (TCbzB) has been synthesized. Although no traditional gelation group was involved in TCbzB, it could form organogels in the mixed solvents of o-dichlorobenzene/cyclohexane (v/v = 1/5 or 1/2), toluene/cyclohexane (v/v = 1/2) and chlorobenzene/cyclohexane (v/v = 1/2). Interestingly, an orange organogel was obtained in o-dichlorobenzene/cyclohexane (v/v = 1/2) with relatively high polarity and red organogels were gained in the other three mixed solvents with relatively low polarity. TCbzB self-assembled into H-aggregates and J-aggregates in orange and red organogels, respectively, and the corresponding xerogels emitted yellow and red light, respectively, under UV illumination. The red emission of the xerogel-based film could be quenched significantly by gaseous n-propylamine and aniline because of the decomplexation of the difluoroboron β-diketonate complex by n-propylamine and the weak interactions between aniline and boron difluoride units.

中文翻译:

由非传统π型胶凝剂形成的H和J聚集体,取决于用于检测胺蒸气的溶剂极性

丁基咔唑改性的difluoroboronβ二酮配合物(TCbzB)已被合成。尽管TCbzB没有涉及传统的凝胶化基团,但是它可以在邻二氯苯/环己烷(v / v = 1/5或1/2),甲苯/环己烷(v / v = 1/2)的混合溶剂中形成有机凝胶。和氯苯/环己烷(v / v = 1/2)。有趣的是,在邻二氯苯/环己烷(v / v = 1/2)中获得了极性相对较高的橙色有机凝胶,而在其他三种极性相对较低的混合溶剂中获得了红色有机凝胶。TCbzB分别在橙色和红色有机凝胶中自组装成H聚集体和J聚集体,相应的干凝胶在紫外线照射下分别发出黄光和红光。基于干凝胶膜的红色发射可以通过显著气态猝灭Ñ丙胺和苯胺因为difluoroboron的解络的β二酮络合物Ñ丙胺和苯胺和二氟化硼单元之间的弱相互作用。
更新日期:2018-10-18
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