Perovskite-type organic–inorganic hybrid NLO switches tuned by guest cations?
Journal of Materials Chemistry C Pub Date: 2017-01-10 DOI: 10.1039/C6TC05105G
Abstract
Three organic–inorganic hybrid analogues, ([Et3(n-Pr)P][Mn(dca)3]) 1, ([Et3(CH2CHCH2)P][Mn(dca)3]) 2, ([Et3(CH2OCH3)P][Mn(dca)3]) 3, [dca = dicyanamide, N(CN)2?], show similar three-dimensional perovskite frameworks, in which the guest phosphonium cations occupy the cavities. Compounds 1 and 3 belong to the orthorhombic noncentrosymmetric space group P212121 at room temperature, while compound 2 crystallizes in the monoclinic centrosymmetric space group P21/c. Differential scanning calorimetry (DSC) and dielectric measurements confirmed the phase transitions in compounds 1, 2 and 3, where subtle structural distinctions of guest cations affect the crystal lattices, phase transition temperatures and physical properties. Interestingly, compounds 1 and 3 are SHG active at room temperature and can be used as NLO switches tuned by guest cations and triggered by temperature.
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Journal Name：Journal of Materials Chemistry C
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CAS no.: 89640-58-4
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