Side-chain dilution effects on the optical properties of poly [3-alkylthiophene]s

被引:30
作者
Lee, T.-M. [1 ]
Mittler-Neher, S. [1 ]
Neher, D. [1 ]
Stegeman, G.I. [1 ]
Roux, C. [1 ]
Leclerc, M. [1 ]
Martin, J. [1 ]
Najafi, S.I. [1 ]
机构
[1] Univ of Central Florida, Orlando, United States
关键词
Absorption spectra - Grating coupling - Kramers-Kronig analysis - Poly (3-alkylthiophene)s - Polythiophenes - Refractive index measurements - Side-chain dilution effects;
D O I
10.1016/0925-3467(92)90002-5
中图分类号
学科分类号
摘要
Waveguiding and refractive index measurements were performed at a number of wavelengths in the red and near infrared region of the spectrum by grating coupling into a series of polythiophenes, poly[3-tetradecylthiphere] (PT14), poly[3-decylthiophene] (PT10) and poly[3-hexylthiophene] (PT6) films. The dispersion in the refractive index was compared to the Kramers-Kronig analysis of the absorption spectra. A decrease of the refractive indices with increasing number of side chains was found due to a volume dilution effect of the optically active main chain.
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页码:65 / 70
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