Optical study of dye-containing fluorinated polyimide thin films |
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Authors: | A. Quaranta S. Carturan G. Maggioni G. Della Mea M. Ischia R. Campostrini |
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Affiliation: | (1) Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Via Romea 4, 35020 Legnaro (Pd), Italy, IT;(2) Università di Trento, Dipartimento di Ingegneria dei Materiali, Mesiano (Tn), Italy, IT |
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Abstract: | Thin films of dye-containing fluorinated polyimide have been obtained by adding the dye powder to the polyamic acid resin and by spin coating the resulting solution on silica and silicon substrates. 6FDA (4,4’-hexafluoroisopropylidene diphthalic anhydride) and DAB (diaminobenzophenone) have been used as precursor monomers and rhodamine B as dye. The influence of the rhodamine-B molecule on the completeness of the imidization process has been studied by coupled thermogravimetric and mass-spectrometric analyses (TG-MS) of pure and doped polyamic acid resin and by FT-IR analysis of samples before and after curing. Optical emission, excitation and absorption spectra have been collected in order to study spectroscopic and aggregation characteristics of rhodamine as a function of the deposition parameters. Received: 2 March 2000 / Accepted: 24 July 2000 / Published online: 9 November 2000 |
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Keywords: | PACS: 78.66.Sq 42.70.Jk |
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