Emergence of additional visible range photoluminescence due to aggregation of cyanine dye:astraphloxin on carbon nanotubes dispersed with anionic surfactant

Abstract

Self-organization of organic molecules with carbon nanomaterials leads to formation of functionalized molecular nano-complexes with advanced features. We present a study of physical and chemical properties of carbon nanotube-surfactant-indocarbocyanine dye (astraphloxin) in water focusing on aggregation of the dye and resonant energy transfer from the dye to the nanotubes. Self-assembly of astraphloxin is evidenced in absorbance and photoluminescence depending dramatically on the concentrations of both the dye and surfactant in the mixtures. We observed an appearance of new photoluminescence peaks in visible range from the dye aggregates. The aggregates characterized with red shifted photoluminescence peaks at 595, 635 and 675 nm are formed mainly due to the presence of surfactant at the premicellar concentration. The energy transfer from the dye to the nanotubes amplifying near-infrared photoluminescence from the nanotubes is not affected by the aggregation of astraphloxin molecules providing important knowledge for further development of advanced molecular nano-complexes. The aggregation with the turned-on peaks and the energy transfer with amplified photoluminescence create powerful tools of visualization and/or detection of the nanotubes in visible and near-infrared spectral range, respectively, boosting its possible applications in sensors, energy generation/storage, and healthcare.

Publication DOI: https://doi.org/10.1021/acs.jpcc.6b06272
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry: Part C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.jpcc.6b06272
Uncontrolled Keywords: Physical and Theoretical Chemistry,Electronic, Optical and Magnetic Materials,Surfaces, Coatings and Films,Energy(all)
Publication ISSN: 1932-7455
Last Modified: 06 May 2024 07:16
Date Deposited: 05 Oct 2016 07:02
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2016-09-15
Published Online Date: 2016-08-24
Accepted Date: 2016-08-24
Authors: Lutsyk, Petro (ORCID Profile 0000-0002-7004-1946)
Piryatinski, Yuri P.
Al Araimi, Mohammed
Arif, Raz
Shandura, Mykola
Kachkovsky, Oleksiy
Verbitsky, Anatoli
Rozhin, Aleksey (ORCID Profile 0000-0003-2271-8227)

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