Synthesis and photophysical characterization of the free-radical copolymerization of metal oquinolate-pendant monomers with methyl methacrylate

被引:40
作者
Du, NY
Tian, RY
Peng, JB
Lu, MG [1 ]
机构
[1] Chinese Acad Sci, Guangdong Guangzhou Inst Chem, Key Lab Polymer Mat Elect, Guangzhou 510650, Peoples R China
[2] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Peoples R China
关键词
radical polymerization; 8-hydroxyquinoline; luminescence; metaloquinolate-containing copolymers; thermal properties; organic light-emitting diodes (OLEDs);
D O I
10.1002/pola.20517
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A series of novel metaloquinolate [aluminum quinolate (Alq(3)), zinc quinolate (Znq(2)), and lithium quinolate (Liq)]-containing copolymers were prepared. This is the first report of the synthesis of metaloquinolate-containing polymers by free-radical copolymerization. The structures of the metaloquinolate monomers and copolymers were characterized by H-1 NMR and Fourier transform infrared techniques. The differential scanning calorimetry and thermogravimetric analysis results showed that the copolymers were more thermally stable than the methyl methacrylate homopolymer. The copolymers (<25 wt % Alq(3), <20 wt % Znq(2), or <15 wt % Liq) could be dissolved in common solvents without crosslinking. The ultraviolet-visible absorption and photoluminescence (PL) emission properties of the copolymers were consistent with the literature data of metaloquinolate complexes. The PL efficiencies of the metaloquinolate-containing copolymers with 25 wt % Alq(3), 20 wt % Znq(2), or 15 wt % Liq were 19.89, 13.24, and 11.82%, respectively. The experimental results indicated that these kinds of materials could be used for practical applications in organic light-emitting diodes. (C) 2004 Wiley Periodicals, Inc.
引用
收藏
页码:397 / 406
页数:10
相关论文
共 29 条
[1]  
AFFINITO JD, 2002, Patent No. 6228436
[2]   Tervalent conducting polymers with tailor-made work functions: Preparation, characterization, and applications as cathodes in electroluminescent devices [J].
Bloom, CJ ;
Elliott, CM ;
Schroeder, PG ;
France, CB ;
Parkinson, BA .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (38) :9436-9442
[3]   Correlation between molecular packing and optical properties in different crystalline polymorphs and amorphous thin films of mer-tris(8-hydroxyquinoline)aluminum(III) [J].
Brinkmann, M ;
Gadret, G ;
Muccini, M ;
Taliani, C ;
Masciocchi, N ;
Sironi, A .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (21) :5147-5157
[4]   AMINO- AND CHLOROMETHYLATION OF 8-QUINOLINOL - MECHANISM OF PREPONDERANT ORTHO SUBSTITUTION IN PHENOLS UNDER MANNICH CONDITIONS [J].
BURCKHALTER, J ;
LEIB, RI .
JOURNAL OF ORGANIC CHEMISTRY, 1961, 26 (10) :4078-&
[5]   Metal chelates as emitting materials for organic electroluminescence [J].
Chen, CH ;
Shi, JM .
COORDINATION CHEMISTRY REVIEWS, 1998, 171 :161-174
[6]   Quinolinate zinc complexes as electron transporting layers in organic light-emitting diodes [J].
Donzé, N ;
Péchy, P ;
Grätzel, M ;
Schaer, M ;
Zuppiroli, L .
CHEMICAL PHYSICS LETTERS, 1999, 315 (5-6) :405-410
[7]   Electroluminescence in conjugated polymers [J].
Friend, RH ;
Gymer, RW ;
Holmes, AB ;
Burroughes, JH ;
Marks, RN ;
Taliani, C ;
Bradley, DDC ;
Dos Santos, DA ;
Brédas, JL ;
Lögdlund, M ;
Salaneck, WR .
NATURE, 1999, 397 (6715) :121-128
[8]   Synthesis and photophysical characterisation of soluble photoluminescent metal complexes with substituted 8-hydroxyquinolines [J].
Ghedini, M ;
La Deda, M ;
Aiello, I ;
Grisolia, A .
SYNTHETIC METALS, 2003, 138 (1-2) :189-192
[9]   MEASUREMENT OF ABSOLUTE PHOTOLUMINESCENCE QUANTUM EFFICIENCIES IN CONJUGATED POLYMERS [J].
GREENHAM, NC ;
SAMUEL, IDW ;
HAYES, GR ;
PHILLIPS, RT ;
KESSENER, YARR ;
MORATTI, SC ;
HOLMES, AB ;
FRIEND, RH .
CHEMICAL PHYSICS LETTERS, 1995, 241 (1-2) :89-96
[10]  
HAMSDA Y, 1993, JPN J APPL PHYS, V32, pL514