title: Neutral Mononuclear Copper(I) Complexes: Synthesis, Crystal Structures, and Photophysical Properties.
abstract: Neutral green-emitting four-coordinate Cu(I) complexes with general formula POPCu(NN), where POP = bis[2-(diphenylphosphino)phenyl]ether and NN = substituted 2-pyridine-1,2,4-triazole ligands, were synthesized. The crystal structures of (POPCuMeCN)(+)(PF6)(-) (1), POPCuPhPtp (2a, PhPtp = 2-(5-phenyl-2H-[1,2,4]triazol-3-yl)-pyridine), and POPCu(3,5-2FPhPtp) (2d, 3,5-2FPhPtp = 2-(5-(3,5-difluorophenyl)-2H-1,2,4-triazol-3-yl)pyridine) were determined by single-crystal X-ray diffraction analysis. The electronic and photophysical properties of the complexes were examined by UV-vis, steady-state, and time-resolved spectroscopy. At room temperature, weak emission was observed in solution, while in the solid state, all complexes exhibit intense green emission with quantum yield up to 0.54. The electronic and photophysical properties were further supported by calculation performed at the (time-dependent) density functional theory level. One of the complexes was also tested as dopant in electroluminescent devices.
authors.affiliation: College of Physics, Optoelectronics and Energy, Institute of Chemical Power Sources, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, 215006, China.|Institute of Functional Nano and Soft Materials, Soochow University , Suzhou, Jiangsu 215123, China.
authors.forename: Yinghui
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Service de Chimie des Matériaux Nouveaux, Université de Mons , Place du Parc 20, 7000 Mons, Belgium.
authors.forename: Vincent
authors.initials: V
authors.lastname: Lemaur
authors.affiliation: Service de Chimie des Matériaux Nouveaux, Université de Mons , Place du Parc 20, 7000 Mons, Belgium.
authors.forename: Juan I
authors.initials: JI
authors.lastname: Beltrán
authors.affiliation: Service de Chimie des Matériaux Nouveaux, Université de Mons , Place du Parc 20, 7000 Mons, Belgium.
authors.forename: Jérôme
authors.initials: J
authors.lastname: Cornil
authors.affiliation: College of Physics, Optoelectronics and Energy, Institute of Chemical Power Sources, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, 215006, China.
authors.forename: Jianwen
authors.initials: J
authors.lastname: Huang
authors.affiliation: College of Physics, Optoelectronics and Energy, Institute of Chemical Power Sources, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, 215006, China.
authors.forename: Juntong
authors.initials: J
authors.lastname: Zhu
authors.affiliation: College of Physics, Optoelectronics and Energy, Institute of Chemical Power Sources, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, 215006, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster , Corrensstrasse 40, 48149 Münster, Germany.
authors.forename: Roland
authors.initials: R
authors.lastname: Fröhlich
authors.affiliation: College of Physics, Optoelectronics and Energy, Institute of Chemical Power Sources, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, 215006, China.
authors.forename: Haibo
authors.initials: H
authors.lastname: Wang
authors.affiliation: Institute of Functional Nano and Soft Materials, Soochow University , Suzhou, Jiangsu 215123, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Jiang
authors.affiliation: College of Physics, Optoelectronics and Energy, Institute of Chemical Power Sources, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou, 215006, China.
authors.forename: Guifu
authors.initials: G
authors.lastname: Zou