English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Aggregation and structural study of the monolayers formed by an amphiphilic thiapentacarbocyanine.

Rubia-Paya, C., Giner-Casares, J. J., de Miguel, G., Martin-Romero, M. T., Möbius, D., & Camacho, L. (2015). Aggregation and structural study of the monolayers formed by an amphiphilic thiapentacarbocyanine. RSC Advances, 5(41), 32227-32238. doi:10.1039/c5ra05192d.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-A8CB-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-CECD-A
Genre: Journal Article

Files

show Files
hide Files
:
2166860.pdf (Publisher version), 3MB
 
File Permalink:
-
Name:
2166860.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Biophysical Chemistry (Karl Friedrich Bonhoeffer Institute), Göttingen; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show
hide
Description:
-

Creators

show
hide
 Creators:
Rubia-Paya, C., Author
Giner-Casares, J. J., Author
de Miguel, G., Author
Martin-Romero, M. T., Author
Möbius, D.1, Author              
Camacho, L., Author
Affiliations:
1Research Group of Molecular Organized Systems, MPI for biophysical chemistry, Max Planck Society, ou_578548              

Content

show
hide
Free keywords: -
 Abstract: Exotic assemblies with unique photophysical features can be built based on organic dyes at the air-liquid interface. Langmuir monolayers of N,N'-dioctadecylthiapentacarbocyanine (OTCC) at air-water and air-solid interfaces have been studied. A single type of domain and presumably of one single aggregate type has been found by Brewster angle microscopy. Peanut-shaped domains with internal anisotropy have been observed. However, this structure leads to a complex absorption spectrum which shows 4 bands, two red-shifted (822 nm and 757 nm), and two blue-shifted (600 nm and 530 nm) with respect to the monomer band (665 nm). Our results confirm that all the absorption components are polarized in approximately the same direction. The absence of an emission spectrum indicates that this interfacial aggregate cannot be classified as a simple J-aggregate. Moreover, these bands cannot relate to Davydov splitting, given that all of them have the same polarization direction. We propose possible explanations based on a strong exciton-phonon interaction, and/or the formation of aggregates with different coherent lengths within the domain. The basic exciton model cannot explain this behavior. The coherent aggregate described in this study is proposed as a unique dye supramolecular structure obtained by assembly at the air-liquid interface.

Details

show
hide
Language(s): eng - English
 Dates: 2015-03-302015
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1039/c5ra05192d
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: RSC Advances
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 5 (41) Sequence Number: - Start / End Page: 32227 - 32238 Identifier: -