Preparation and Characterization of Chromophores Pillared Zn-Al-LDH

doi:10.3724/SP.J.1077.2009.01019

Abstract

Abstract: A pair of chromophores with donor-acceptor properties, coumarin-3-carboxylic acid (3-CCA) and 9-anthracene carboxylic acid (9-ACA), were intercalated into the layered double hydroxide (LDH), ［Zn_0.66Al_0.34(OH)₂］(CO₃) _0.17·0.33H₂O by the method of ion-exchange procedures in ethylene glycol. The co-intercalation compounds with different molar ratios of donor to acceptor in the solid products were obtained by controlling ion-exchange time, temperature, and the molar ratio of donor to acceptor in the solution. The obtained co-intercalation compounds were characterized by X-ray diffraction, infrared and thermogravimetry techniques. The photochemical properties of the obtained compounds were studied by UV-Vis absorption and fluorescence spectroscopy. These results indicate that the pair of chromophores, 3-CCA and 9-ACA within the interlayer region of the host can give rise to energy transfer processes because of the characteristics of their excited states.

Key words: hydrotalcites, co-intercalation, donor-acceptor, energy transfer

CLC Number:

O641

LI Lei,WEN Zheng,CHEN Da-Zhou,TANG Hua. Preparation and Characterization of Chromophores Pillared Zn-Al-LDH[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.01019.

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Preparation and Characterization of Chromophores Pillared Zn-Al-LDH

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