The interaction between sulfur-containing chromophores and cationic species (K+) has been investigated in dye-loaded zeolite materials by means of photoluminescence spectroscopy. A red-shift in the emission spectra of the host-guest compounds (HGCs) has been detected and unambiguously connected to the close proximity between a conjugated moiety and nearby free charges, suggesting a specific role played by sulfur lone pair electrons. Quantum-chemical calculations on model compounds have been performed to support this hypothesis.
Macchi, G., Botta, C., Calzaferri, G., Catti, M., Cornil, J., Gierschner, J., et al. (2010). Weak forces at work in dye-loaded zeolite materials: spectroscopic investigation on cation–sulfur interactions. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 12(11), 2599-2605 [10.1039/b919880f].
Weak forces at work in dye-loaded zeolite materials: spectroscopic investigation on cation–sulfur interactions
MACCHI, GIORGIO
;CATTI, MICHELE;MEINARDI, FRANCESCO;TUBINO, RICCARDO
2010
Abstract
The interaction between sulfur-containing chromophores and cationic species (K+) has been investigated in dye-loaded zeolite materials by means of photoluminescence spectroscopy. A red-shift in the emission spectra of the host-guest compounds (HGCs) has been detected and unambiguously connected to the close proximity between a conjugated moiety and nearby free charges, suggesting a specific role played by sulfur lone pair electrons. Quantum-chemical calculations on model compounds have been performed to support this hypothesis.
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