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论文类型：期刊论文

发表时间：2016-05-01

发表刊物：CHEMICAL PAPERS

收录刊物：SCIE、Scopus

卷号：70

期号：5

页面范围：663-666

ISSN号：0366-6352

关键字：cyclophane; reversible reaction; ring-size of macrocycle; supramolecular devices

摘要：A novel Hg2+ ion induced reversible ring contraction was achieved employing the intramolecular reaction of isobutylene with an aromatic hydroxyl group of cyclophane; reversibility of the reaction was facilitated by excess addition of NaBH4 which also resulted in complexation. The ring contraction and expansion was monitored by UV-VIS absorption, and by fluorescence and H-1 NMR spectra. Switchable fluorescence behavior (on-off-on) was observed when the ring-size was tuned from a 19-membered ring to an 18-membered and vice versa. This fine tuning has the potential to be applied in the construction of new supramolecular devices. (c) 2015 Institute of Chemistry, Slovak Academy of Sciences