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  Effect of additives on J-aggregate formation of a merocyanine and energy transfer in monolayers at the air-water interface

Gil, A., Aristegui, I., Suarez, A., Sandez, I., & Moebius, D. (2002). Effect of additives on J-aggregate formation of a merocyanine and energy transfer in monolayers at the air-water interface. Langmuir, 18(22), 8527-8534. Retrieved from http://pubs.acs.org/doi/pdfplus/10.1021/la026095v.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-F2AF-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-E45F-5
Genre: Journal Article

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16687.pdf (Publisher version), 0B
 
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 Creators:
Gil, A., Author
Aristegui, I., Author
Suarez, A., Author
Sandez, I., Author
Moebius, D.1, Author              
Affiliations:
1Research Group of Molecular Organized Systems, MPI for biophysical chemistry, Max Planck Society, ou_578548              

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 Abstract: Formation of J-aggregates of the amphiphilic merocyanine 3- octadecyl-2-[3,3-dicyano-allyliden]benzoxazolin (S118) in monolayers at the air-water interface has been investigated in the absence and presence of the additives (coaggregates, CA) octadecane, methylstearate, octadecanoic acid, and octadecanol, respectively, in the molar ratio S118/CA = 1:1. The monolayers have been characterized by surface pressure-area and surface potential-area isotherms, and the morphology was studied by Brewster angle microscopy. Chromophore association was investigated by reflection spectroscopy. In the presence of the coaggregate, monolayer stability is increased and the morphology drastically changed, although J- aggregates are formed in all monolayers. Efficient energy transfer in monolayers at the air-water interface from excited S 118 to an amphiphilic merocyanine incorporated in the monolayer as acceptor was detected by fluorescence spectroscopy.

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Language(s): eng - English
 Dates: 2002-10-29
 Publication Status: Published in print
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 Rev. Method: Peer
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Title: Langmuir
Source Genre: Journal
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Pages: - Volume / Issue: 18 (22) Sequence Number: - Start / End Page: 8527 - 8534 Identifier: -