Department of Chemistry Guru Nanak Dev University, UGC Sponsored Centre for Advanced Studies-1, Amritsar, India143005. mksharmaa@ yahoo.co.in
Dalton Trans. 2010 Nov 14;39(42):10122-7. doi: 10.1039/c0dt00702a. Epub 2010 Oct 14.
New thiacalix[4]crown derivatives 4 and 5 of 1,3-alternate conformation possessing anthracene and quinoline moieties respectively were synthesised and examined for their cation recognition abilities toward different cations by fluorescence spectroscopy. Selective optical recognition with fluorescence amplification was observed for Fe(3+)/K(+) and Hg(2+)/K(+) in chemosensors 4 and 5 respectively. Further it was observed that the formation of 4·Fe(3+) complex triggers the decomplexation of K(+) ion. Similar allosteric behaviour between Hg(2+) and K(+) was observed in chemosensor 5.
新型噻咯[4]冠醚衍生物 4 和 5 分别具有蒽和喹啉部分，具有 1,3-交替构象，通过荧光光谱法研究了它们对不同阳离子的阳离子识别能力。在化学传感器 4 和 5 中，分别观察到对 Fe(3+)/K(+)和 Hg(2+)/K(+)的选择性光学识别和荧光放大。进一步观察到 4·Fe(3+)配合物的形成触发了 K(+)离子的去络合。在化学传感器 5 中也观察到 Hg(2+)和 K(+)之间类似的变构行为。
