TY - JOUR
T1 - Synthesis, characterization and emission study of zinc(II) and cobalt(II) complexes
T2 - Bis(bidentate) iminophenols as zinc(II) selective fluorescence probes
AU - Chakraborty, Biswarup
AU - Halder, Partha
AU - Chakraborty, Sourav
AU - Das, Oindrila
AU - Paria, Sayantan
N1 - Funding Information:
Crystallography was performed at the DST-funded National Single Crystal Diffractometer Facility at the Department of Inorganic Chemistry, IACS. B.C., P.H. and S.P. acknowledge the Council of Scientific and Industrial Research (CSIR), India for fellowships. Authors sincerely acknowledge Dr. Tapan Kanti Paine for his constant guidance, suggestions and valuable input.
PY - 2012/5/30
Y1 - 2012/5/30
N2 - Two zinc(II) complexes, [Zn II 2(L 1) 2] (1) and [Zn II 2(L 2) 2] (2), and two cobalt(II) complexes, [Co II 2(L 1) 2] (3) and [Co II 2(L 2) 2] (4), (H 2L 1 = iminophenol derived from the condensation of 4-aminobenzylamine and salicyldehyde, H 2L 2 = Schiff-base of 4-aminobenzylamine and 3,5-di-tert-butylsalicyldehyde) supported by bis(N,O-bidentate) ligands have been synthesized and characterized. X-ray single crystal structures of 3 and 4 revealed the dimeric nature of the complexes with a 1:1 ratio of metal and ligand. The zinc(II) complexes have a very similar composition as established from different analytical and spectroscopic techniques. The iminophenols exhibit highly selective fluorescence enhancement with high quantum yield upon binding with Zn 2+ in solution. A 50-fold enhancement of emission in zinc(II) complexes is observed with respect to free iminophenols.
AB - Two zinc(II) complexes, [Zn II 2(L 1) 2] (1) and [Zn II 2(L 2) 2] (2), and two cobalt(II) complexes, [Co II 2(L 1) 2] (3) and [Co II 2(L 2) 2] (4), (H 2L 1 = iminophenol derived from the condensation of 4-aminobenzylamine and salicyldehyde, H 2L 2 = Schiff-base of 4-aminobenzylamine and 3,5-di-tert-butylsalicyldehyde) supported by bis(N,O-bidentate) ligands have been synthesized and characterized. X-ray single crystal structures of 3 and 4 revealed the dimeric nature of the complexes with a 1:1 ratio of metal and ligand. The zinc(II) complexes have a very similar composition as established from different analytical and spectroscopic techniques. The iminophenols exhibit highly selective fluorescence enhancement with high quantum yield upon binding with Zn 2+ in solution. A 50-fold enhancement of emission in zinc(II) complexes is observed with respect to free iminophenols.
KW - Cobalt
KW - Fluorescence
KW - Iminophenol
KW - Solid state structures
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=84860277804&partnerID=8YFLogxK
U2 - 10.1016/j.ica.2012.02.024
DO - 10.1016/j.ica.2012.02.024
M3 - Article
AN - SCOPUS:84860277804
SN - 0020-1693
VL - 387
SP - 332
EP - 337
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
ER -