Surface Enhanced Visible Absorption of Dye Molecules in the Near-Field of Gold Nanoparticles.

Scientific Reports
S ElhaniZ Sekkat

Abstract

Surface enhanced absorption is a plasmonic effect parenting to surface enhanced fluorescence and Raman scattering, and it was clearly reported to occur in the infrared region of the spectrum of light. In this paper, we unambiguously show that it also occurs in the visible region of the spectrum by using a dye; i.e. an azo-dye, which exhibits a good light absorption in that region, and gold nanoparticles, which act as plasmonic nanoantennas that capture and re-radiate light, when the azo-dyes and the nanoparticles are incorporated in the bulk of solid films of polymer. In such a configuration, it is possible to use a dye concentration much larger than that of the nanoparticles and absorption path lengths much larger than those of the molecularly thin layers used in surface enhanced effects studies. In addition, the dye undergoes shape and orientation change; i.e. isomerization and reorientation, upon polarized light absorption; and the observation of surface enhanced visible absorption is done by two separate experiments; i.e. UV-visible absorption spectroscopy and photo-induced birefringence, since the signals detected from both experiments are directly proportional to the extinction coefficient of the dye. Both the dye's absor...Continue Reading

References

Aug 23, 2005·Nature Materials·Peter KarageorgievLudwig Brehmer
Sep 26, 2006·Colloids and Surfaces. B, Biointerfaces·Xiong LiuQun Huo
Aug 25, 1989·Science·D A Parthenopoulos, P M Rentzepis
May 7, 2008·Journal of the American Chemical Society·Weihai NiJianfang Wang
Nov 15, 2008·Chemistry : a European Journal·Michael M PollardBen L Feringa
May 1, 1981·Optics Letters·H G Craighead, A M Glass
Feb 20, 2010·Nature Materials·Harry A Atwater, Albert Polman
Apr 15, 2010·Journal of the American Chemical Society·Edward H WitlickiAmar H Flood
Apr 24, 2010·Science·Mark L Brongersma, Vladimir M Shalaev
Jul 9, 2010·Optics Express·Vivian E FerryAlbert Polman
Nov 10, 2010·Journal of the American Chemical Society·Yusuke IdeMakoto Ogawa
Nov 11, 2010·Chemical Reviews·Xiaobo ChenSamuel S Mao
May 21, 2011·Proceedings of the National Academy of Sciences of the United States of America·Quan YuanWeihong Tan
Nov 24, 2011·Optics Express·Mark I Stockman
Nov 24, 2011·Nature Materials·Suljo LinicDavid B Ingram
Oct 9, 2012·Physical Chemistry Chemical Physics : PCCP·Samuel L KleinmanRichard P Van Duyne
Feb 28, 2013·Nature Communications·G J FangN A Clark
Mar 5, 2013·Reports on Progress in Physics·Xuming ZhangDin Ping Tsai
Oct 28, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Chakra P Joshi, Terry P Bigioni
Aug 4, 2015·Nature Nanotechnology·Hayk HarutyunyanGary P Wiederrecht
Feb 3, 2016·Applied Optics·Zouheir Sekkat
Jan 1, 2009·Journal of Research of the National Institute of Standards and Technology·A K GaigalasLili Wang
Sep 15, 2016·Scientific Reports·S HayashiZ Sekkat
Nov 4, 2016·The Journal of Physical Chemistry. B·Anouar RahmouniZouheir Sekkat
Aug 16, 2017·Nanoscale·Hamed EskandarlooAlireza Abbaspourrad

❮ Previous
Next ❯

Citations


❮ Previous
Next ❯

Methods Mentioned

BETA
scanning transmission microscopy
transmission electron microscopy
light scattering

Software Mentioned

FullWAVE
SEIRA
RSoft

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.