Perovskite-type organic–inorganic hybrid NLO switches tuned by guest cations. Issue 6 (27th January 2017)

• Record Type: Journal Article
• Authors: Geng, Fu-Juan; Zhou, Lin; Shi, Ping-Ping; Wang, Xiao-Li; Zheng, Xuan; Zhang, Yi; Fu, Da-Wei; Ye, Qiong
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 6(2017)
• Page Start: 1529
• Page End: 1536
• Publication Date: 2017-01-27
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6tc05105g
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Three perovskite-type organic–inorganic hybrid analogues undergo reversible phase transitions and can be used as NLO switches tuned by guest cations. Abstract : Three organic–inorganic hybrid analogues, ([Et3 ( n -Pr)P][Mn(dca)3 ])1, ([Et3 (CH2 CHCH2 )P][Mn(dca)3 ])2, ([Et3 (CH2 OCH3 )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. Compounds1 and3 belong to the orthorhombic noncentrosymmetric space group P 21 21 21 at room temperature, while compound2 crystallizes in the monoclinic centrosymmetric space group P 21 / c . Differential scanning calorimetry (DSC) and dielectric measurements confirmed the phase transitions in compounds1, 2 and3, where subtle structural distinctions of guest cations affect the crystal lattices, phase transition temperatures and physical properties. Interestingly, compounds1 and3 are SHG active at room temperature and can be used as NLO switches tuned by guest cations and triggered by temperature.