p-Quaterphenylene as an Aggregation-Induced Emission Fluorogen in Supramolecular Organogels and Fluorescent Sensors

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• 作者：Yue Sun ; Dr. Yi-Xuan Wang ; Mengjiao Wu ; Wei Yuan and Prof. Dr. Yulan Chen
• 刊名：Chemistry – An Asian Journal
• 出版年：2017
• 出版时间：January 3, 2017
• 年：2017
• 卷：12
• 期：1
• 页码：52-59
• 全文大小：1615K
• ISSN：1861-471X

文摘

Two dumbbell-shaped organogelators with a p-quaterphenylene core were synthesized, and their self-assembly properties were investigated. These low-molecular-weight gelators could form self-supporting gels in many apolar organic solvents with an H-type aggregation form through a synergic effect of π–π stacking, intermolecular translation-related hydrogen bonding, and van der Waals forces. In comparison to the p-terphenylene-cored gelator, the extended π-conjugated segment improved the gelation efficiency significantly with enhanced gelation rate. Additionally, these p-quaterphenylene-centered gelators exhibited strong fluorescence emission induced by aggregation, which not only provided an in situ method to optically monitor the gelation process, but also endowed these self-assemblies with substantial applications in sensing explosives.