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(Oligo)thienyl-imidazo-benzocrown ether derivatives : synthesis, photophysical ...
Batista, Rosa M. F.; Oliveira, Elisabete; Costa, Susana P. G.; Lodeiro, Carlos; Raposo, M. Manuela M.; Ferreira, R. Cristina M.A series of novel (oligo)thienyl-imidazobenzocrown ethers were synthesised through a simple method and evaluated as fluorimetric chemosensors for transition metal cations. Interaction with Ni2+, Pd2+, and Hg2+ in ACN/DMSO solution (99:1) was studied by absorption and emission spectroscopy. Chemoselectivity studies in the presence of Na+ were also carried out and a fluorescence enhancement upon chelation (CHEF) ...
Data: 2011
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Origem: RepositóriUM - Universidade do Minho
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