何磊 - 中南大学 - 化学化工学院

研究领域

目前我们主要设计合成新型有机配体，用于开发过渡金属发光配合物，如铱、铂、铜等发光配合物，研究配合物的光物理、电化学等性质，以及配合物在有机电致发光等领域的应用。过渡金属配合物具有很强的自旋-轨道耦合效应，能够在室温下由三线态发射高效磷光；同时，这类配合物多具有可逆的电化学氧化和还原。过渡金属发光配合物在有机电致发光器件（organic light emitting diodes, OLEDs）中能够实现100％的内量子效率，一直以来引起了学术界和产业界广泛的研究兴趣。我们通过设计合成不同类型的配体，调控过渡金属配合物的发光波长、发光效率、电化学稳定性、薄膜电荷传输效率等特性，旨在开发性能的过渡金属发光配合物，并制备高性能的有机电致发光器件。同时，我们也将致力于拓展这类过渡金属发光配合物在光解水制氢、探针、传感等领域的应用。

近期论文

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Lei He,Bin Hu*, et al. Optically Tunable Magneto-Capacitance Phenomenon inOrganic Semiconducting Materials Developed by ElectricalPolarization of Intermolecular Charge-Transfer States. Advanced Materials. 2014, 26, 3956(IF=15.409) Lei He, Lian Duan,Juan Qiao, Liduo Wang, YongQiu*, et al. Toward Highly Efficient Solid-State White Light-Emitting Electrochemical Cells: Blue-Green to Red Emitting Cationic Iridium Complexes with Imidazole-Type Ancillary Ligands. Advanced Functional Materials, 2009, 19, 2950. (IF=10.439) Lei He, Juan Qiao, Lian Duan, Liduo Wang, Yong Qiu*, et al. Blue-Emitting Cationic Iridium Complexes with 2-(1H-Pyrazol-1-yl)pyridine as the Ancillary Ligand for Efficient Light-Emitting Electrochemical Cells. Advanced Functional Materials, 2008, 18, 2123. (IF=10.439) Lei He, Lian Duan, Yong Qiu*, et al. Highly Efficient Blue-Green and White Light-Emitting Electrochemical Cells Based on a Cationic Iridium Complex with a Bulky Side Group. Chemistry of Materials, 2010, 22, 3535. (IF=8.535) Lei He, Lian Duan, Yong Qiu*, et al.Enhanced Stability of Blue-Green Light-Emitting Electrochemical Cells Based on a Cationic Iridium Complex with 2-(1-Phenyl-1H-Pyrazol-3-yl)pyridine as the Ancillary Ligand. Chemical Communications. 2011, 47, 6467. (IF=6.718) Lei He, Lian Duan, Yong Qiu*, et al.Control of Intramolecular π−π Stacking Interaction in CationicIridium Complexes via Fluorination of Pendant Phenyl Rings. Inorganic Chemistry.2012, 51, 4502. (IF=4.794) Lei He, Lian Duan, Yong Qiu*, et al. Efficient Solution-Processed Electrophosphorescent Devices Using Ionic Iridium Complexes as the Dopants. Organic Electronics, 2009, 10, 152. (IF=3.676) Lei He, Lian Duan, Yong Qiu*, et al. Highly Efficient Solution-Processed Blue-Green to Red and White Light-Emitting Diodes Using Cationic Iridium Complexes as Dopants. Organic Electronics, 2010, 11, 1185. (IF=3.676) Lei He,Bin Hu*, et al. Magnetophotoluminescence line-shape narrowing through interactions betweenexcited states in organic semiconducting materials. Physical Review B, 2014, 89, 155304.(IF=3.664) Lei He, Dongxin Ma, Lian Duan, YongQiu*, et al. Electrophosphorescent Devices Based on Cationic Iridium Complexes: the Effect of Fluorinating the Pendant Phenyl Ring of the Ancillary Ligand on the Device Performance. Synthetic Metals. 2013, 166, 52. (IF=2.222) Lei He, Lian Duan, Yong Qiu*, et al. Efficient Blue-Green and White Organic Light-Emitting Diodes with a Small-Molecule Host and Cationic Iridium Complexes as Dopants. Applied Physics A, 2010, 100, 1035. (IF=1.694) Tao Hu, Lei He, Lian Duan and YongQiu*. Solid-State Light-Emitting Electrochemical Cells Based on Ionic Iridium(III) Complexes. Journal of Materials Chemistry.2012, 22, 4206. (IF=6.626)