Abstract
For achieving solar absorber and conversion molecular materials with excellent photothermal conversion ability, five mononuclear Copper(II) coordination compounds have been designed and isolated. They are fully characterized by IR, Powder XRD, Solid-state UV, and TGA. Single-crystal X-ray structural analysis reveals that they are typical photothermal conversion molecules with double chromophores: one antenna chromophore (NT group here) and the second chromophores (Cu(dmap)42+, Cu(dmap)22+, Cu(bpy)22+ and Cu(phen)22+). Both chromophores have great influence on their solid-state optical absorption. Their photothermal conversion experiments show that compounds 3, 4 and 5 have the better results (the highest temperature increment 21.7 ℃ and equilibrium temperature ~ 60.7 ℃) than compounds 1 and 2. Those results give some clues for illustrating the molecular mechanisms of solar absorber and photothermal conversion molecular materials.
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