Anand Thangaraj, Sivaraman Gandhi, Mahesh Ayyavu, Chellappa Duraisamy
School of Chemistry, Madurai Kamaraj University, Madurai 625021, India.
School of Biological Sciences, Madurai Kamaraj University, Madurai 625021, India.
Anal Chim Acta. 2015 Jan 1;853:596-601. doi: 10.1016/j.aca.2014.11.011. Epub 2014 Nov 11.
We have synthesized a new probe 5-((anthracen-9-ylmethylene) amino)quinolin-10-ol (ANQ) based on anthracene platform. The probe was tested for its sensing behavior toward heavy metal ions Hg(2+), Pb(2+), light metal Al(3+) ion, alkali, alkaline earth, and transition metal ions by UV-visible and fluorescent techniques in ACN/H2O mixture buffered with HEPES (pH 7.4). It shows high selectivity toward sensing Pb(2+)/Al(3+) metal ions. Importantly, 10-fold and 5- fold fluorescence enhancement at 429 nm was observed for probe upon complexation with Pb(2+) and Al(3+) ions, respectively. This fluorescence enhancement is attributable to the prevention of photoinduced electron transfer. The photonic studies indicate that the probe can be adopted as a sensitive fluorescent chemosensor for Pb(2+) and Al(3+) ions.
我们基于蒽平台合成了一种新型探针5-((蒽-9-基亚甲基)氨基)喹啉-10-醇(ANQ)。通过紫外可见光谱和荧光技术，在由HEPES缓冲的ACN/H2O混合物(pH 7.4)中，测试了该探针对重金属离子Hg(2+)、Pb(2+)、轻金属Al(3+)离子、碱金属、碱土金属和过渡金属离子的传感行为。它对Pb(2+)/Al(3+)金属离子具有高选择性。重要的是，该探针与Pb(2+)和Al(3+)离子络合时，在429 nm处分别观察到10倍和5倍的荧光增强。这种荧光增强归因于光致电子转移的抑制。光子学研究表明，该探针可作为Pb(2+)和Al(3+)离子的灵敏荧光化学传感器。
