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Aromatic monomer-metal complexes with conjugation-disrupting linking groups and electroluminescent polymers incorporating them and electronic devices using the polymers

Aromatic monomer-metal complexes with conjugation-disrupting linking groups and electroluminescent polymers incorporating them and electronic devices using the polymers. Yu, Wanglin; O'Brien, James J. (USA ). U.S. Pat. Appl. Publ.Chemicals with cas numbers 28165-52-8 and 828935-49-5 also play role. US 2005014023 A1 20 Jan 2005,15 pp. (English). (United States of America). CODEN: USXXCO. CLASS: ICM: H05B033-14. ICS: C09K011-06. APPLICATION: US 2004-885979 7 Jul 2004. PRIORITY: US 2003-2003/PV487879 16 Jul 2003. DOCUMENT TYPE: Patent CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) Section cross-reference(s): 29, 38, 76 Halogenated or boronated arom. monomer-metal complex compds. comprising a halogenated or boronated arom. monomer fragment and a metal complex fragment are described by the general formula I (L = bidentate ligand; M = Ir, Pt, Rh, or Os; with the proviso that M = Ir, Rh, or Os when n = 2, and M = Pt when n = 1; each Z = O, S, or NH; Y = CR or N, where R = H or C1-20 alkyl; and R1 and R2 = independently selected monovalent substituents or H, with the proviso that 31 of R1 and R2 contains a halogenated or boronated arom. monomer fragment and linking group that disrupts conjugation between the arom. monomer fragment and the metal complex fragment). By including a linking group that disrupts conjugation, electron delocalization between the arom. monomer fragment and the metal complex fragment is reduced or prevented. Disruption of conjugation is often desirable to preserve the phosphorescent emission properties of the metal complex in a polymer formed from the arom. monomer-metal complex. The resultant conjugated electroluminescent polymer has precisely controlled metal complexation and electronic properties that are substantially or completely independent of those of the polymer backbone. Electroluminescent polymers having a backbone that comprises structural units of the arom. monomer-metal complexes and structural units of 31 arom. comonomer are described which are conjugated along the polymer backbone created by structural units of the arom. monomer-metal complex and structural units of the arom. comonomer(s). Electronic devices employing films of the electroluminescent polymers are also described. .