Study of optical properties of electropolymerized melanin films by photopyroelectric spectroscopy

被引：27

作者：

de Albuquerque, JE ^{[1
]}

Giacomantonio, C

White, AG

Meredith, P

机构：

[1] Univ Fed Vicosa, Dept Fis, BR-36571000 Vicosa, MG, Brazil

[2] Univ Queensland, Sch Phys Sci, Soft Condensed Matter Phys Grp, Brisbane, Qld 4072, Australia

来源：

EUROPEAN BIOPHYSICS JOURNAL WITH BIOPHYSICS LETTERS | 2006年 / 35卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

melanin; photopyroelectric spectroscopy; optical properties;

D O I：

10.1007/s00249-005-0020-z

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Photopyroelectric (PPE) spectroscopy, in the 350-1,075 nm wavelength range, was used to study the optical properties of electropolymerized melanin films on indium tin oxide (ITO) coated glass. The PPE intensity signal as a function of the wavelength lambda, V (n)(lambda) and its phase F (n)(lambda) were independently measured. Using the PPE signal intensity and the thermal and optical properties of the pyroelectric detector, we were able to calculate the optical absorption coefficient beta of melanin in the solid-state. We believe this to be the first such measurement of its kind on this material. Additionally, we found an optical gap in these melanin films at 1.70 eV.

引用

页码：190 / 195

页数：6

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