Rhodamine-Appended Bipyridine: XOR and OR Logic Operations Integrated in an Example of Controlled Metal Migration

authors	Nunez, C; Santos, SM; Oliveira, E; Santos, HM; Capelo, JL; Lodeiro, C
nationality	International
journal	CHEMISTRYOPEN
author keywords	bipyridyls; DFT; logic gates; metals; migration; rhodamineB
keywords	EFFECTIVE CORE POTENTIALS; MOLECULAR CALCULATIONS; AQUEOUS-MEDIA; FLUORESCENT SENSOR; RATIOMETRIC PROBE; ANION RECOGNITION; HG2+; CHEMOSENSORS; CHEMISTRY; CELLS
abstract	A new bipyridyl derivative 1 bearing rhodamineB as visible fluorophore was designed, synthesized and characterized as a fluorescent and colorimetric sensor for metal ions. Interaction with Cu2+, Zn2+, Cd2+, Hg+, and Hg2+ ions was followed by UV/Vis and emission spectroscopy. Upon addition of these metal ions, different colorimetric and fluorescent responses were observed. Off-on-off (Cu2+, Zn2+, and Hg2+) and off-on (Hg+ and Cd2+) systems were obtained. Probe 1 was explored to mimic XOR and OR logic operations for the simultaneous detection of Hg+-Cu2+ and Hg+-Zn2+ pairs, respectively. DFT calculations were also performed to gain insight into the lowest-energy gas-phase conformation of free receptor 1 as well as the atomistic details of the coordination modes of the various metal ions.
publisher	WILEY-V C H VERLAG GMBH
issn	2191-1363
year published	2014
volume	3
issue	5
beginning page	190
ending page	198
digital object identifier (doi)	10.1002/open.201402020
web of science category	Chemistry, Multidisciplinary
subject category	Chemistry
unique article identifier	WOS:000344221900003