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Bulletin of the Chemical Society of Ethiopia

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PREPARATION, CHARACTERIZATION AND OPTICAL PROPERTIES OF MCM-41/RHODAMINE B

Yue-Xiang Liu, Qing-Zhou Zhai

Abstract


Nanometer MCM-41 molecular sieve and rhodamine B (RhB) have been used for the host and guest, respectively, to prepare host-guest (nanometer MCM-41)-RhB composite materials by liquid-phase grafting method. Powder X-ray diffraction, chemical analysis, infrared spectroscopy, low temperature nitrogen adsorption-desorption technique and diffuse reflectance absorption spectroscopy were used to characterize the prepared (nanometer MCM-41)-RhB host-guest composite material. The results showed that the framework of the molecular sieve in the host-guest composite material is well retained and highly ordered. The RhB was confined and dispersed inside the channels of the host material. A blue-shift of 56 nm in the UV-vis diffuse reflection absorption spectrum of the host-guest composite material prepared further indicated that RhB trapped in the channels of the molecular sieve. The guest was stereoscopically confined by the channels of the nanometer MCM-41 host. The prepared host-guest composite material shows luminescence. The material has the potentiality as luminescence material.
KEY WORDS: Host-guest nanocomposite material, Nanometer MCM-41 molecular sieve host, Rhodamine B guest, Characterization, Luminescence


Bull. Chem. Soc. Ethiop. 2009, 23(1), 145-150.



http://dx.doi.org/10.4314/bcse.v23i1.21313
AJOL African Journals Online