Under solvothermal conditions, the reaction of 4-pyridylacrilic acid (4-hpya) and 2,2′-bipyridine (bpy) with Cu(MeCN)4BF4 gives rise to an unprecedented stable copper(I)-olefin coordination polymer {[(bpy)(4-hpya) Cu(I)](BF4)}n 1 which displays strong red fluorescent emission in the solid state.
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Zhang et al. (2000) studied this question.
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