1397291-06-3Relevant academic research and scientific papers
Determination limit of fluorescence turn-on probes for the acetate anion
Shang, Xuefang,Yuan, Jianmei,Du, Zhimin,Wang, Yingling,Jia, Shenyu,Han, Jie,Li, Yue,Zhang, Jinlian,Xu, Xiufang
, p. 719 - 731 (2013/05/22)
Three fluorescent turn-on probes containing 3,6-dichloro-9H-carbazole as carbazyl part have been designed and synthesized. Among studied anions F -, AcO-, H2PO4-, Cl -, Br- and I-, AcO- showed the strongest binding ability with all probes. The strong basic anions, such as AcO-, H2PO4-, and F-, induced a significant red-shift in absorption and a concomitant increase in fluorescent emission of the probes caused by photoinduced electron transfer (PET). The determination limit of probe 3 (Scheme 1) toward AcO- is 3.0×10-7 M. 1H-NMR Titration experiments shed light on the nature of the interaction between the probes and the anions. Theoretical investigation further illustrated the possible binding mode in these host-guest interactions and the roles of molecular frontier orbitals in molecular interplay. Copyright
