School of Chemistry, Madurai Kamaraj University, Madurai-625021, Tamil Nadu, India.
Analyst. 2012 Nov 21;137(22):5320-4. doi: 10.1039/c2an35721f. Epub 2012 Sep 26.
4-Methoxy-N-((thiophen-2-yl)methyl)benzenamine was found to be a highly selective chemosensor for Ag(+) ion in methanol-water (1 : 1 v/v) mixture over other metal ions such as Na(+), K(+), Li(+), Cu(+), Ba(2+), Cd(2+), Co(2+), Cu(2+), Fe(2+), Hg(2+), Mn(2+), Ni(2+), Pb(2+) and Zn(2+) with a limit of detection (LOD) is 5.0 × 10(-6) mol L(-1). Upon binding to Ag(+) ion, a strong fluorescent enhancement is observed which is attributed to an increase in intramolecular charge transfer (ICT). The proposed mechanism is strongly supported by TD-DFT calculations.
4-甲氧基-N-((噻吩-2-基)甲基)苯甲胺被发现是甲醇-水（1：1v/v）混合物中对Ag(+)离子具有高选择性的化学传感器，对其他金属离子如Na(+)、K(+)、Li(+)、Cu(+)、Ba(2+)、Cd(2+)、Co(2+)、Cu(2+)、Fe(2+)、Hg(2+)、Mn(2+)、Ni(2+)、Pb(2+)和Zn(2+)的检测限（LOD）为 5.0×10(-6)molL(-1)。与 Ag(+)离子结合后，观察到强荧光增强，这归因于分子内电荷转移（ICT）的增加。该机理得到了 TD-DFT 计算的有力支持。
