基于 s-四嗪的选择性和比色氟离子化学传感器。
Selective and colorimetric fluoride anion chemosensor based on s-tetrazines.
机构信息
Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
出版信息
Dalton Trans. 2012 Nov 21;41(43):13338-42. doi: 10.1039/c2dt31641b.
s-Tetrazine and their derivatives are found to be a class of selective and colorimetric chemosensors for fluoride anions. The supramolecular interaction (anion-π and charge/electron transfer) between fluoride ion and π-electron deficient tetrazines receptor could facilitate the F(-)-tetrazines electron transfer (ET) event that generates tetrazine˙(-) radical anion. Accordingly, the color of its solution changed from red to green. Furthermore, the recognition of F(-) in DMSO is tolerant to water (DMSO-H(2)O = 9:1, v/v) and shows excellent selectivity towards other anions, especially H(2)PO(4)(-) and OAc(-).
s-四嗪及其衍生物被发现是一类选择性和比色化学传感器，可以检测氟离子。氟离子与缺π电子的四嗪受体之间的超分子相互作用（阴离子-π 相互作用和电荷/电子转移）可以促进 F(-)-四嗪电子转移（ET）事件，从而产生四嗪˙(-)自由基阴离子。因此，其溶液的颜色从红色变为绿色。此外，在 DMSO 中对 F(-)的识别可以耐受水（DMSO-H(2)O = 9:1，v/v），并且对其他阴离子，特别是 H(2)PO(4)(-)和 OAc(-)，具有优异的选择性。
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