Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70064
標題: Electrical and optical properties of porphyrin single crystals
作者: Chen, Y.C.
Lee, M.W.
Li, L.L.
Lin, K.J.
關鍵字: porphyrin
molecular crystal
electrical
optical properties
dielectric
function
zinc-porphyrin
building-blocks
arrays
microscopy
transport
nanorods
design
motifs
films
wire
期刊/報告no:: Journal of Macromolecular Science Part B-Physics, Volume 47, Issue 5, Page(s) 955-966.
摘要: In this work, we investigate the transport and optical properties of single crystal 5,10,15,20-tetrakis (4-N-ethylpyridyl) porphyrin salts, [H(2)TEPyP4+center dot 4I(-)]. The electrical conductivity exhibits high anisotropy, in that the conductivity along the stacking column, which is equal to 3.2 x 1.0(-8) Omega(-1) cm(-1), is three orders of magnitude larger than that perpendicular to the stacking column. The absorption spectra of the single crystals exhibit a blue shift in the B-band and significant red shifts in the Q-bands in comparison to the solution spectra. Polarized reflectance measurements of the crystals reveal that the anisotropic reflectance is most intense when the light polarization is parallel to the molecular plane. The complex dielectric function, plasma frequency, and optical conductivity associated with each electronic transition are calculated based on analysis with a dielectric-function model.
URI: http://hdl.handle.net/11455/70064
ISSN: 0022-2348
文章連結: http://dx.doi.org/10.1080/00222340802218596
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