The 3-morpholin-4-yl-propyl-ammine tetrafluoroborate（MPA^＋）（BF4^-）（1） and the 3-morpholin-4-ylpropyl-ammine perchlorate（MPA^＋）（ClO4^-）（2） were synthesized and separated as colorless block crystal.The（M...The 3-morpholin-4-yl-propyl-ammine tetrafluoroborate（MPA^＋）（BF4^-）（1） and the 3-morpholin-4-ylpropyl-ammine perchlorate（MPA^＋）（ClO4^-）（2） were synthesized and separated as colorless block crystal.The（MPA^＋）（BF4^-） undergoes a reversible phase transition at ca.347.3 K with a hysteresis of16.1 K.Dielectric measurement also can confirm the transition.The crystal structure determined at300 K（monoclinic,P21/c,a = 9.978（2）A,b = 7.5206（15）A,c = 15.058（3）A,b = 96.99（3）8,v = 1121.6（4）A^3,z = 4） and 373 K（triclinic,P-1,a = 10.021（7）A,b = 7.662（3）A,c = 7.920（4）A,a = 95.012（14）8,b = 101.67（4）8,g = 91.48（3）8,v = 592.7（6）A^3,z = 2） reveal that this compound has two phase.The most distinct is the BF4^- anion is disorder at 373 K,which is probably the driving force of the phase transition.DSC measurement,dielectric measurement and the crystal structure of the compound 2 did not change at 300 K and 100 K.展开更多
Organic-inorganic hybrid metal halides have gained worldwide attention due to their structural diversity and intriguing physical&chemical properties[1–5].The metal halides hold great promise in micro-and nano-ele...Organic-inorganic hybrid metal halides have gained worldwide attention due to their structural diversity and intriguing physical&chemical properties[1–5].The metal halides hold great promise in micro-and nano-electronics,energy storage,photocatalysis,optoelectronics and photovoltaics[6–9].In particular,photovoltaic devices containing a compositional derivative of the hybrid metal halide methylammonium lead halide(CH_(3)-NH_(3)PbX_(3),X=Cl,Br or I)have demonstrated remarkably high photoconversion efficiencies[10,11].展开更多
基金supported by the Project 973 (No.2014CB848800)National Natural Science Foundation of China (Nos.21471032,21422101 and 21301029)+2 种基金Jiangsu Province NSF (Nos.BK20140056 and BK20130600)Program for NCETPh.D.Programs Foundation of Ministry of Education of China (No.20130092120013)
文摘The 3-morpholin-4-yl-propyl-ammine tetrafluoroborate（MPA^＋）（BF4^-）（1） and the 3-morpholin-4-ylpropyl-ammine perchlorate（MPA^＋）（ClO4^-）（2） were synthesized and separated as colorless block crystal.The（MPA^＋）（BF4^-） undergoes a reversible phase transition at ca.347.3 K with a hysteresis of16.1 K.Dielectric measurement also can confirm the transition.The crystal structure determined at300 K（monoclinic,P21/c,a = 9.978（2）A,b = 7.5206（15）A,c = 15.058（3）A,b = 96.99（3）8,v = 1121.6（4）A^3,z = 4） and 373 K（triclinic,P-1,a = 10.021（7）A,b = 7.662（3）A,c = 7.920（4）A,a = 95.012（14）8,b = 101.67（4）8,g = 91.48（3）8,v = 592.7（6）A^3,z = 2） reveal that this compound has two phase.The most distinct is the BF4^- anion is disorder at 373 K,which is probably the driving force of the phase transition.DSC measurement,dielectric measurement and the crystal structure of the compound 2 did not change at 300 K and 100 K.
基金financially supported by the National Natural Science Foundation of China(21771037,21875035,21991144 and 21805033)。
文摘Organic-inorganic hybrid metal halides have gained worldwide attention due to their structural diversity and intriguing physical&chemical properties[1–5].The metal halides hold great promise in micro-and nano-electronics,energy storage,photocatalysis,optoelectronics and photovoltaics[6–9].In particular,photovoltaic devices containing a compositional derivative of the hybrid metal halide methylammonium lead halide(CH_(3)-NH_(3)PbX_(3),X=Cl,Br or I)have demonstrated remarkably high photoconversion efficiencies[10,11].
