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Intercalation of Rhodamine 6G and Oxazine 4 into Oriented Clay Films and Their Alignment

Published online by Cambridge University Press:  31 January 2011

Guangming Chen ,
Nobuo Iyi ,
Ryo Sasai ,
Taketoshi Fujita  and
Kenji Kitamura
Guangming Chen
Affiliation:
Advanced Materials Laboratory (AML), National Institute for Materials Science, 1–1 Namiki, Tsukuba, Ibaraki 305–0044, Japan
Nobuo Iyi*
Affiliation:
Advanced Materials Laboratory (AML), National Institute for Materials Science, 1–1 Namiki, Tsukuba, Ibaraki 305–0044, Japan
Ryo Sasai
Affiliation:
Research Center for Advanced Waste and Emission Management (ResCWE), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464–8603, Japan
Taketoshi Fujita
Affiliation:
Advanced Materials Laboratory (AML), National Institute for Materials Science, 1–1 Namiki, Tsukuba, Ibaraki 305–0044, Japan
Kenji Kitamura
Affiliation:
Advanced Materials Laboratory (AML), National Institute for Materials Science, 1–1 Namiki, Tsukuba, Ibaraki 305–0044, Japan
*
a)Address all correspondence to this author. e-mail: IYI.Nobuo@nims.go.jp
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Extract

The cationic dyes rhodamine 6G (R6G) and oxazine 4 (Ox4) were intercalated into oriented lithium hectorite (LiHT, a synthetic fluor-mica) films by ion-exchange, and their orientation was studied by x-ray and polarized spectroscopy. Orientation of dyes was determined by basal spacing obtained by x-ray diffraction data, showing that angles of the long axis were 60° for R6G and 47° for Ox4 against the layer. Polarized ultraviolet-visible spectroscopy showed that the high-order H-aggregate of R6G and Ox4 were oriented at 64° and 52° against layers, respectively; other states of dyes were oriented at much lower angles. The interlayer distance was mostly determined by dimensions of the high-order H-aggregate.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 5 , May 2002 , pp. 1035 - 1040
Copyright
Copyright © Materials Research Society 2002

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