Dinuclear platinum complexes containing aryl-isoquinoline and oxadiazole-thiol with an efficiency of over 8.8%: in-depth investigation of the relationship between their molecular structure and near-infrared electroluminescent properties in PLEDs. Issue 25 (8th June 2016)

• Record Type: Journal Article
• Authors: Xiong, Wenjing; Meng, Fanyuan; Tan, Hua; Wang, Yafei; Wang, Pu; Zhang, Youming; Tao, Qiang; Su, Shijian; Zhu, Weiguo
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 25(2016)
• Page Start: 6007
• Page End: 6015
• Publication Date: 2016-06-08
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6tc00825a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Two novel dinuclear platinum complexes of (2niq)2 Pt2 (μ-C8 PhOXT)2 and (piq)2 Pt2 (μ-PhOXT)2 were synthesized and characterized. Abstract : Two novel dinuclear platinum complexes of (2niq)2 Pt2 (μ-C8 PhOXT)2 and (piq)2 Pt2 (μ-PhOXT)2 were synthesized and characterized, where 2niq is 2-naphthyl-isoquinolinate, piq is 1-pheny-isoquinolinate, and μ-C8 PhOXT and μ-PhOXT are anions of 5-(4-octylphenyl)-1, 3, 4-oxadiazole-2-thiol and 5-phenyl-1, 3, 4-oxadiazole-2-thiol, respectively. The Pt–Pt bond was confirmed by the (piq)2 Pt2 (μ-PhOXT)2 single crystal. A high-efficiency NIR electroluminescence peak at about 704 nm was observed for this (2niq)2 Pt2 (μ-C8 PhOXT)2 in the solution-processed PLEDs with a notable external quantum efficiency (EQE) of 8.86% and an irradiate of 986 μW cm −2 at 9 wt% dopant concentration. Moreover, the efficiency roll-off was efficiently restrained, with an EQE of 5.22% at a current density of 100 mA cm −2 and 8.47% at 12 wt% dopant concentration.