Polarized Absorption and Emission of Ordered Self-Assembled Porphyrin Rings

Self-assembled rings (with diameters of 0.1−2.0 μm) consisting of porphyrin dodecamer molecules are formed by evaporating chloroform solutions on glass substrates. Fluorescence microscopy experiments on individual rings reveal a strongly polarized optical absorption and emission. Quantitative analys...

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Bibliographic Details
Published in:Nano letters 2004-08, Vol.4 (8), p.1401-1406
Main Authors: Jeukens, Cécile R. L. P. N, Lensen, Marga C, Wijnen, Frans J. P, Elemans, Johannes A. A. W, Christianen, Peter C. M, Rowan, Alan E, Gerritsen, Jan W, Nolte, Roeland J. M, Maan, Jan C
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Methods of nanofabrication
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Organic compounds and polymers
Organic compounds, polymers
Physics
Self-assembly
Visible and ultraviolet spectra
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Summary:Self-assembled rings (with diameters of 0.1−2.0 μm) consisting of porphyrin dodecamer molecules are formed by evaporating chloroform solutions on glass substrates. Fluorescence microscopy experiments on individual rings reveal a strongly polarized optical absorption and emission. Quantitative analysis of the fluorescence images evidences the high degree of order within the rings, consisting of radially oriented columnar stacks of porphyrin dodecamers, and the absence of energy transport along the rings on length scales resolved by fluorescence microscopy.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl049363d