<i>p</i>-Nitrophenyl Triazenyl Purine: First Adenine-based Colorimetric Anion Sensor
作者:K. K. Upadhyay、Ajit Kumar、Shalini Upadhyay、Rakesh K. Mishra、P. K. Roychoudhuary
DOI:10.1246/cl.2008.186
日期:2008.2.5
6-[(2E)-3-(4-Nitrophenyl)triaz-2-en-1-yl]-9H-purine (p-nitrophenyl triazenyl purine, PNTP) has been synthesized and evaluated for sensing the anions PF6−, HSO4−, ClO4−, and BF4− as their tetrabutylammonium salts in DMSO. This is the first example of any adenine-based anion sensor. The addition of 2 equivalents of PF6−, HSO4−, ClO4−, and BF4− to the 2×10−5 mol dm−3 DMSO solution of PNTP at room temperature produced visible color changes and perturbation of UV–vis spectral pattern of PNTP in terms of absorbance at 398 and 575 nm in reciprocal patterns. The sensing ability of PNTP was found to be best for PF6− among all the chosen anions.
我们合成了 6-[(2E)-3-(4-硝基苯基)三氮唑-2-烯-1-基]-9H-嘌呤(对硝基苯基三氮唑嘌呤,PNTP),并对其在二甲基亚砜(DMSO)中作为四丁基铵盐感测 PF6-、HSO4-、ClO4- 和 BF4-阴离子的能力进行了评估。这是首个基于腺嘌呤的阴离子传感器实例。在室温下向 2×10-5 mol dm-3 的 PNTP DMSO 溶液中加入 2 个等量的 PF6-、HSO4-、ClO4- 和 BF4-,会产生可见的颜色变化,并且 PNTP 的紫外-可见光谱模式也会发生变化,在 398 纳米和 575 纳米处的吸光度呈往复模式。在所有选定的阴离子中,PNTP 对 PF6- 的感应能力最强。