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Synthesis and Hole‐Transporting Property of a Novel Poly( N ‐vinylcarbazole) Copolymer with Metal‐Coordination Sites
Author(s) -
Kimoto Atsushi,
Cho JunSang,
Matsuura Yugo,
Yamamoto Kimihisa
Publication year - 2005
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200500145
Subject(s) - copolymer , dendrimer , electroluminescence , metal , polymer chemistry , polymer , luminescence , homo/lumo , metal ions in aqueous solution , materials science , chemistry , photochemistry , layer (electronics) , molecule , nanotechnology , organic chemistry , optoelectronics
Summary: Hole transporting poly( N ‐vinylcarbazole) copolymers with phenylazomethine dendron units acting as metal ligation sites were synthesized. These polymers possess both hole‐transport and metal‐collecting units with simple σ ‐bond linkages. Complexation in the phenylazomethine dendron unit within these copolymers by SnCl 2 has been successfully observed by the change in the UV‐vis spectra. The complexation changes the HOMO/LUMO energy gap that results in a spectral red‐shift. Using copolymers as a hole‐transport layer, only complexation with metal ions leads to an enhanced maximum luminescence. Such a complexation results in a high electroluminescence efficiency because the p ‐type‐doped structure acts as the hole‐transport layer.Copolymerization for the preparation of DPAG n ( x )‐Cbz( y ).