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A versatile synthetic strategy based on the use of a non-peripherally substituted dihydroxysilicon phthalocyanine and dihydroxygermanium octaethylporphyrin has permitted controlled construction of heterodyads that absorb across the whole visible spectrum; the same phthalocyanine also reacts with chlorosubphthalocyanine to form a Si-O-B linked dyad and triad.
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Zhao et al. (2009) studied this question.
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