Near-infrared absorbing organic materials
Z. Y. Wang, J. Zhang, X. Wu, M. Birau, G. Yu, H. Yu, Y. Qi, P. Desjardins, X. Meng, J. P. Gao, E. Todd, N. Song, Y. Bai, A. M. R. Beaudin, and G. LeClair
Department of Chemistry, Carleton University, 1125
Colonel By Drive, Ottawa K1S 5B6, Canada
Abstract: Organic solids and polymers that absorb in the near-infrared
(NIR) region (1000�2000 nm) represent a class of emerging materials
and show a great potential for use in photonics and telecommunications.
The radical anions of stacked aromatic imides, fused phorphyrin arrays,
polythiophenes, sandwich-type lanthanide bisphthalocyanines, semiquinones,
and mixed-valence dinuclear metal complexes are a few known examples
of NIR-absorbing organic materials. Most of these NIR-absorbing materials
are also electro- chemically active or electrochromic (EC). This brief
review covers several types of NIR-absorbing organic materials and discusses
their potential for applications in EC variable optical attenuators
(VOAs).
*Lecture presented at the symposium "Polymers in electronics and photonics: Synthesis, characterizations and device applications", as part of the 39th IUPAC Congress and 86th Conference of the Canadian Society for Chemistry: Chemistry at the Interfaces, Ottawa, Canada, 10-15 August 2003. Other Congress presentations are published in this issue, pp. 1295-1603.
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