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Aromatic polymers with side oxadiazole rings as luminescent materials in LEDs
Author(s) -
Bruma Maria,
Hamciuc Elena,
Schulz Burkhard,
Köpnick Thomas,
Kaminorz Yvette,
Robison Jenifer
Publication year - 2003
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200350942
Subject(s) - fluorene , oxadiazole , materials science , polymer , thermal stability , polymer chemistry , polyamide , condensation polymer , photoluminescence , thermal decomposition , chemical engineering , chemistry , organic chemistry , composite material , optoelectronics , engineering
Aromatic polyamides and polyazomethines with side oxadiazole rings have been synthesized by using aromatic diamines containing pendent substituted oxadiazole groups and a diacid chloride having diphenylsilane or hexafluoroisopropylidene, or an aromatic dialdehyde with fluorene unit, respectively. These polymers were easily soluble in amidic solvents. Very thin films which were deposited from polymer solutions onto silicon wafers exhibited smooth, pinhole‐free surface in atomic force microscopy investigations. The polymers showed high thermal stability with decomposition temperature being above 400°C. Some of them exhibited blue photoluminescence, in the range of 450‐480 nm, making them promising candidates for future use as high performance materials in the construction of light emitting devices.