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论文类型：期刊论文

发表时间：2017-09-21

发表刊物：CHEMISTRY-A EUROPEAN JOURNAL

收录刊物：Scopus、SCIE、EI、PubMed

卷号：23

期号：53

页面范围：13067-13075

ISSN号：0947-6539

关键字：aggregation-induced emission; bioimaging; fluorophores; sensors; zinc

摘要：Two novel organic fluorophores, containing bis-naphthylamide and quinoline motifs, have been designed and synthesized. One of the fluorophores contains an isobutylene unit and exhibits a significant aggregation-induced emission (AIE) and a remarkable highly selective ratiometric fluorescence response towards Zn2+ in solution as well as in human liver cancer cells. The AIE behavior of this fluorophore was fully verified by fluorescence and UV/Vis spectroscopy, quantum yield calculations, and single-crystal X-ray diffraction, which revealed an intricate crystal packing system. Conversely, a fluorophore that lacks the isobutylene moiety did not exhibit any significant fluorescent properties as a result of its more flexible molecular structure that presumably allows free intramolecular rotational processes to occur.