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Investigation of the Chemistry for the Host Sol‐Gel Glass via the Energy Transfer Fluorescence of Encapsulated Organic‐Tb(III) Complexes
Author(s) -
Zaitoun Mohammed A.
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201900594
Subject(s) - terbium , dithiocarbamate , chemistry , sol gel , fluorescence , ligand (biochemistry) , hydrolysis , matrix (chemical analysis) , luminescence , ion , crystallography , nuclear chemistry , materials science , organic chemistry , nanotechnology , chromatography , biochemistry , physics , receptor , optoelectronics , quantum mechanics
Abstract Fluorescence of organo‐terbium complexes have been investigated as a function of the matrix composition using two sol‐gel derived hosts: (a) matrix 1, an alkoxysilane Si (OR) 4 , where all the coordinated OR groups associated with silicon hydrolyze in water and (b) matrix 2 with an organoalkoxysilane, R’‐ Si (OR) 3 which consists of organic R’ groups that don't hydrolyze. The synthesized organo‐Tb(III) complexes, namely: Tb(III) dithiocarbamate‐Tb(L1) 3 B [L1=(R) 2 NCS 2 B, R=C 2 H 5 and B=1,10‐phenanthroline] and Tb(III) complex with the polytonic ligand L2=N’, N’2‐bis[(1E)‐1‐2‐(pyridyl)ethylidine]ethanedihydrazide Tb 2 ‐L2‐(CH 3 COO) 2 ; L2=C 16 H 16 N 6 O 2 ) were in situ encapsulated in the sol‐gel glass hosts matrices, 1 and 2. Tb luminescence was shown to depend largely on (i) the ligand surrounding Tb ions, and (ii) chemistry or nature of the sol‐gel host matrix.