| Study of internal structure of meso-tetrakis (4-sulfonatophenyl) porphine J-aggregates in solution by fluorescence microscope imaging in a magnetic field. | |
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MedLine Citation:
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PMID: 16922538 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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To determine the internal molecular arrangement of organic dye aggregates, a technique for observing the fluorescence microscope image of a solution consisting of dye aggregates in a magnetic field was developed. Using this technique, the fluorescence image of meso-tetrakis (4-sulfonatophenyl) porphine (TPPS) J-aggregates in a solution in a magnetic field of 10 T was observed. It was observed that individual rod-shaped TPPS aggregates (4-20 microm in length) were aligned parallel to the applied field. The polarized absorption spectra of the sample solution were also measured in the fields of up to 10 T. The spectra show the magnetic field dependence of the J-band intensity, reflecting the magnetic alignment of the aggregates. On the basis of the magnetic and optical properties obtained by the experiments, it was proposed that TPPS J-aggregates have a tube-like structure and are constructed from one-dimensional molecular arrays that are stacked parallel to the long axis of the tube. |
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Authors:
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Yasutaka Kitahama; Yasuyuki Kimura; Ken Takazawa |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Langmuir : the ACS journal of surfaces and colloids Volume: 22 ISSN: 0743-7463 ISO Abbreviation: Langmuir Publication Date: 2006 Aug |
Date Detail:
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Created Date: 2006-08-22 Completed Date: 2007-09-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882736 Medline TA: Langmuir Country: United States |
Other Details:
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Languages: eng Pagination: 7600-4 Citation Subset: - |
Affiliation:
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Tsukuba Magnet Laboratory, National Institute for Materials Science, 3-13 Sakura, Tsukuba 305-0003, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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