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Article Abstract
Three structurally related cadmium coordination polymers CP1-CP3 {[Cd(Pebpeb)(L)] (CP1), [Cd(Pebpeb)(L)] (CP2) and [Cd(Pebpeb)(L)]·HL (CP3)} were constructed from the photoactive alkene ligand Pebpeb (Pebpeb = 4,4'-((1,1')-(5-(pyridin-3-ylethynyl)-1,3-phenylene)bis(ethene-2,1-diyl))dipyridine; HL = 3-chlorobenzoic acid; HL = 3-nitrobenzoic acid; HL = 3-isopropyl benzoic acid) and Cd(II) ions in the presence of different auxiliary carboxylic acids. Different conformations of the functional olefinic ligand Pebpeb were observed in CP1-CP3 despite their similar 1D chain motif. [2 + 2] Solid-state photodimerization occurred when crystals of CP1-CP3 were irradiated with UV light (365 nm) and each displayed different photosalient (PS) responses attributed to the different bulkiness of the auxiliary carboxylic acids employed. A simple photoactuating device was prepared using a CP1-PVA (PVA = Polyvinyl Alcohol) composite.
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