2004年7月
Preparation of J-aggregate liposome dispersions and their chromic transformation
LANGMUIR
- ,
- ,
- ,
- 巻
- 20
- 号
- 14
- 開始ページ
- 5718
- 終了ページ
- 5723
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/la049569u
- 出版者・発行元
- AMER CHEMICAL SOC
We report the preparation of aqueous liposome dispersions of J-aggregates formed by the amphiphilic merocyanine dye (MD). A series of liposome-forming lipids were dispersed together with MD J-aggregates at different molar ratios of MD to lipid. The MD J-aggregate dispersions prepared with 1,2-dimyristoylsn-glycero-3-phosphocholine (DMPC) at the MD to DMPC ratio of 0.16 exhibit good dispersibility; that is, they can be readily redispersed without any flocculation even after their precipitation. By use of different counterions for the MD molecules, two types of J-aggregate dispersions, one that exhibits an absorption band (J-band) at 635 mn (type I) and the other at 600 nm (type II), were obtained. As an example of the use of MD J-aggregates liposome dispersions, the thermochromic transformation of MD J-aggregates was demonstrated. When the dispersions are heated, J-aggregates of type I transformed into type II at a certain temperature (T-disp). The parameters that control the speed of the transformation and the value of Tdisp were determined.
- リンク情報
- ID情報
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- DOI : 10.1021/la049569u
- ISSN : 0743-7463
- Web of Science ID : WOS:000222429200015