Organic-inorganic hybrid perovskites(OIHPs)materials with high phase transition temperature(T_(p))have been widely studied in the field of molecular switches,solar energy and electric power.At present,the OIHPs with h...Organic-inorganic hybrid perovskites(OIHPs)materials with high phase transition temperature(T_(p))have been widely studied in the field of molecular switches,solar energy and electric power.At present,the OIHPs with high T_(p)are generally constructed through molecular design,which can be applied to a wide temperature range.Here,three one-dimensional(1D)OIHPs[R-Cl EQ]PbCl_(3)(T_(p)=442 K),[R-Cl EQ]PbBr_(3)(T_(p)=499 K)and[R-Cl EQ]PbI_(3)(T_(p)above m.p.)(R-Cl EQ=(R)-N-chloroethyl-3-quinuclidinol)with different T_(p)are obtained by regulating the halogen-halogen interaction and hydrogen bonding in the system.Especially in[R-Cl EQ]Pb X_(3)(X=Cl,Br and I)crystal system,all the halogen bonds tend to form at approximately 180°angles and the strength of halogen bonding is found to be increased from 1.59×10^(-3)Hartree to 2.35×10^(-3)Hartree with increased atom number from Cl to I.The synergistic effect of halogen bonding and hydrogen bonding provide a useful strategy for the design OIHPs phase transition materials with high T_(p).展开更多
基金financially supported by the National Natural Science Foundation of China(No.22005183)the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices(No.KF202204)the 1331 Project for Featured Chemistry Discipline in Shanxi Normal University。
文摘Organic-inorganic hybrid perovskites(OIHPs)materials with high phase transition temperature(T_(p))have been widely studied in the field of molecular switches,solar energy and electric power.At present,the OIHPs with high T_(p)are generally constructed through molecular design,which can be applied to a wide temperature range.Here,three one-dimensional(1D)OIHPs[R-Cl EQ]PbCl_(3)(T_(p)=442 K),[R-Cl EQ]PbBr_(3)(T_(p)=499 K)and[R-Cl EQ]PbI_(3)(T_(p)above m.p.)(R-Cl EQ=(R)-N-chloroethyl-3-quinuclidinol)with different T_(p)are obtained by regulating the halogen-halogen interaction and hydrogen bonding in the system.Especially in[R-Cl EQ]Pb X_(3)(X=Cl,Br and I)crystal system,all the halogen bonds tend to form at approximately 180°angles and the strength of halogen bonding is found to be increased from 1.59×10^(-3)Hartree to 2.35×10^(-3)Hartree with increased atom number from Cl to I.The synergistic effect of halogen bonding and hydrogen bonding provide a useful strategy for the design OIHPs phase transition materials with high T_(p).
