Aromatic polyimides for optoelectronic applications

Aromatic polyimides have been prepared by solution polycondensation reaction of different aromatic diamines having preformed 1,3,4-oxadiazole ring with naphthalene-1,4,5,8-tetracarboxylic acid dianhydride (DNTA) or with a mixture of this dianhydride with hexafluoroisopropylidene-dianhydride (6FDA)....

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Bibliographic Details
Main Authors: Rusu, R.-D., Damaceanu, M.-D., Bruma, M., Tigoianu, R.I., Muller, A.
Format: Conference Proceeding
Language:English
Subjects:
Chemical technology
Electrons
Glass
Heating
Photoluminescence
Polyimides
Polymers
Thermal resistance
Thermal stability
Transistors
Online Access:Request full text
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Summary:Aromatic polyimides have been prepared by solution polycondensation reaction of different aromatic diamines having preformed 1,3,4-oxadiazole ring with naphthalene-1,4,5,8-tetracarboxylic acid dianhydride (DNTA) or with a mixture of this dianhydride with hexafluoroisopropylidene-dianhydride (6FDA). The copolyimides containing naphthalene and flexible hexafluoroisopropylidene groups were soluble in polar amidic solvents and their solutions gave flexible thin films when spread onto glass plates and very thin films with smooth surface by spin coating. The thermal stability and glass transition temperature of these polyimides and copolyimides were measured and compared with regard to the influence of naphthalene units on these physical properties. The UV-vis and photoluminescence properties were also investigated.
ISSN:1545-827X
2377-0678
DOI:10.1109/SMICND.2008.4703346