| Literature DB >> 27730418 |
Veikko Uahengo1,2, Yan Zhang3, Bi Xiong3, Pingping Zhao3, Ping Cai3, Lydia Rhyman4, Ponnadurai Ramasami4,5, Kai Hu3, Gongzhen Cheng3.
Abstract
The 2,2'-dinaphtholazobenzene molecular framework (P) was designed, synthesized and characterized. Its absorption and fluorescence properties revealed that P is a dual sensor for copper ions (Cu2+) and fluoride ions (F-) in DMSO. The colorimetric activities were clearly visible by naked eye upon the addition of the two ions. Fluorescence quenching and enhancement were observed when Cu2+ and F- ions were added respectively. Density Functional Theory (DFT) calculations were carried out to provide an insight into the interaction of guest ions (Cu2+ and F-) with P, and to explain how the molecular orbitals were affected. Graphical Abstract ᅟ.Entities:
Keywords: DFT; Dual sensor; Fluorescence quenching-enhancement; Molecular recognition; Organic molecular framework
Year: 2016 PMID： 27730418 DOI： 10.1007/s10895-016-1945-6
Source DB: PubMed Journal: J Fluoresc ISSN： 1053-0509 Impact factor: 2.217