LIU Qing, ZHANG Xing, SHI Shi-kao, SONG Hui-hua, HAN Zhan-gang, ZHOU Ji. Intercalation Assembly and Optical Properties of Metalloporphyrin into An Inorganic Lamellar Framework[J]. Chinese Journal of Luminescence, 2011,32(6): 617-621
LIU Qing, ZHANG Xing, SHI Shi-kao, SONG Hui-hua, HAN Zhan-gang, ZHOU Ji. Intercalation Assembly and Optical Properties of Metalloporphyrin into An Inorganic Lamellar Framework[J]. Chinese Journal of Luminescence, 2011,32(6): 617-621 DOI: 10.3788/fgxb20113206.0617.
Intercalation Assembly and Optical Properties of Metalloporphyrin into An Inorganic Lamellar Framework
The optical properties of porphyrins have been extensively investigated in the fields of labels
catalysts and sensors
which are attributed to the absorbance in the near ultraviolet and visible region and emission in the red light region. In general
porphyrins present weak luminescence in aqueous media. Especially
the emission of metal phorphyrin shows much weaker. Therefore
it is a challenging task to enhance the emission of the metal complex in aqueous system. In this paper
the optical properties of metalloporphyrin complex
silver (Ⅱ) tetra-phenyl porphyrin
(TPP-Ag)
intercalated into an inorganic lamellar framework (dodecyltrimethylammomium zirconium phosphate
DTZrP) was studied. It was attempted to optimize the optical property resorting to the special microenvironment provided by DTZrP. The DTZrP lamellar framework was prepared by lyophilization method
and the result of X-ray powder diffraction demonstrates that the interval of the lamellar framework is about 3.00 nm. The metalloporphyrin TPP-Ag was synthesized according to previous procedure and characterized with FTIR
UV-visible
and elementary analysis. By means of intercalation chemistry
the TPP-Ag chromophore was assembled into DTZrP successfully. The optical behavior of the chromophore takes on evident change. The Soret absorption peak is red-shifted from 421 nm in the aqueous solution to 429 nm in the suspension. Most of all
the fluorescence property of TPP-Ag assembled into lamellar framework is improved dramatically compared to the chromophore in the aqueous solution. The fluorescence intensity is enhanced by nearly 10-fold. It is concluded that the lamellar framework DTZrP provides appropriate setting which can improve effectively the optical behavior. The optimized fluorescence property is in favor of the chromophore as fluorescence probe in the body of organism.
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