Zn2Yb-Grafted and star-shaped metallopolymers for efficient near-infrared (NIR) polymer light-emitting diodes (PLEDs)

被引：12
作者：
Fu, Guorui [1 ]
He, Yani [1 ]
Li, Baoning [1 ]
Liu, Lin [1 ]
Li, Wentao [1 ]
Zhang, Zhao [1 ,2 ]
Lu, Xingqiang [1 ]
机构：
[1] Northwest Univ, Shaanxi Key Lab Degradable Med Mat, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China
[2] Shaanxi Univ Sci & Technol, Coll Bioresource Chem & Mat, Xian 710021, Shaanxi, Peoples R China
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2018年 / 6卷 / 33期
关键词：
PURITY GREEN-LIGHT; ORGANIC CHROMOPHORES; COMPLEX MONOMERS; ENERGY-TRANSFER; ROLL-OFF; ELECTROLUMINESCENCE; ND; LUMINESCENCE; LN; RED;
D O I：
10.1039/c8tc02776e
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ring-opening metathesis polymerization (ROMP) of tetraallyl-functionalized complex monomer {[Zn-2(L)(4)Ln(OAc)(2)](NO3)} (HL = 4-allyl-2-(1H-benzo[d]imidazol-2-yl)-6-methoxyphenol; Ln = Nd, 2; Ln = Yb, 3; or Ln = Er, 4) with NBE (norbornene) was used to prepare Zn(2)Ln-containing star-shaped metallopolymers with desirable physical properties, including efficient Ln(3+)-centered NIR luminescence. Using metallopolymer poly(3-co-NBE), with its charge-facilitated and BCP-assisted carrier transport properties (BCP = 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline), as the emitting layer in a Yb3+-centered NIR-PLED afforded record electroluminescent properties (irradiance, 90.24 W cm(-2); efficiency, 0.065%) among previously reported organo-Yb3+-doped or organo-Yb3+-grafted polymer systems, with the advantages of a low turn-on voltage (5 V) and weak efficiency roll-off (30%) compared with organo-Yb3+-complex-based NIR-OLEDs.
引用
收藏
页码：8950 / 8957
页数：8
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