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Synthesis, Characterization, and Photophysical Properties of Materials Obtained by Co‐intercalation of Chromophores into Layered Double Hydroxides
Author(s) -
Li Lei,
Zhang Li,
Wen Zheng,
Chen Dazhou
Publication year - 2010
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201090049
Subject(s) - chemistry , chromophore , intercalation (chemistry) , hydroxide , carboxylate , anthracene , ab initio , excited state , fluorescence , photochemistry , crystallography , inorganic chemistry , stereochemistry , organic chemistry , quantum mechanics , nuclear physics , physics
A pair of chromophores with donor‐acceptor properties, coumarin‐3‐carboxylic acid (3‐CCA) and 9‐anthracene carboxylic acid (9‐ACA), have been successfully intercalated into the layered double hydroxide (LDH), [Zn 0.66 Al 0.34 (OH) 2 ](CO 3 ) 0.17 ·0.33H 2 O by an ion‐exchange method. The obtained co‐intercalation compounds were characterized by X‐ray diffraction, FTIR spectral, thermogravimetry techniques and chemical composition. The guest molecular sizes and structures were investigated utilizing an ab initio (HF/6‐31G) method by G98w. These anions were steadily arranged between the metal hydroxide layers by their carboxylate functional groups interacting with the layer plane. The photophysical properties of the obtained compounds were studied by UV‐Vis absorption and fluorescence spectroscopy. These results indicate that the confinement of the pair of chromophores, 3‐CCA and 9‐ACA, within the interlayer region of the host is in favor of guest‐host interaction and guest‐guest interaction, and that the pair of chromophores, 3‐CCA and 9‐ACA can give rise to energy transfer processes because of the characteristics of their excited states.