A nucleobase–inorganic hybrid polymer built from P2Mo5O23 and Cu(II)–cytosine subunits has been prepared; X-ray crystal structure analysis reveals the cytosine molecules weakly coordinate to copper(II) and connect the P2Mo5O23 subunit through hydrogen bonds to form extended 2D networks with complicated hydrogen bonding modes; a bathochromic shift, compared to free cytosine, can be observed in the fluorescence spectra of the hybrid polymer.
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Weng et al. (2002) studied this question.
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