Enhanced electrochemiluminescence and charge transport through films of metallopolymer-gold nanoparticle composites

Langmuir : the ACS Journal of Surfaces and Colloids
Anitha DevadossRobert J Forster

Abstract

Water-soluble 4-(dimethylamino) pyridine (DMAP) stabilized gold nanoparticles (DMAP-AuNP) were synthesized by ligand exchange and phase transfer (toluene/water). The DMAP-AuNPs are positively charged with the core diameter of 4 +/- 1 nm. Metallopolymer-gold nanocomposites were prepared by mixing gold nanoparticles and [Ru(bpy)(2)PVP(10)](ClO(4))(2), in water at different mole ratios; bpy is 2,2'-bipyridyl and PVP is poly (4-vinylpyridine). The photoluminescence emission intensity of the metallopolymer decreases with increasing AuNP loading and approximately 57% of the emission intensity is quenched when the Au NP:Ru mole ratio is 14.8 x 10(-2). The rate of homogeneous charge transfer through thin layers of the nanocomposite deposited on glassy carbon electrodes increases with increasing nanoparticle loading. The homogeneous charge transport diffusion coefficient, D(CT), for the composite (AuNP:Ru mole ratio 13.2 x 10(-2)) is (2.8 +/- 0.8) x 10(-11) cm(2) s(-1) and is approximately 3-fold higher than that found for the pure metallopolymer. Significantly, despite the ability of the metal nanoparticles to quench the ruthenium-based emission, the electrochemiluminescence of the nanocomposite with a AuNP:Ru mole ratio of 4.95 x 10(-...Continue Reading

References

Feb 5, 2003·Current Opinion in Biotechnology·David A Schultz
Apr 24, 2003·Journal of the American Chemical Society·Lynn DennanyJames F Rusling
Dec 29, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·Paolo BertoncelloClaudio Nicolini
Jun 29, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Valérie J Gandubert, R Bruce Lennox
Mar 11, 2006·The Journal of Physical Chemistry. B·Pearl Pui Hang ChengRoyce W Murray
Apr 20, 2006·Journal of the American Chemical Society·T L JenningsG F Strouse
Jul 21, 2006·The Journal of Physical Chemistry. B·Catherine J MurphyTan Li
Jun 22, 2007·Chemical Reviews·A Stephen K Hashmi
Sep 25, 2008·The Journal of Physical Chemistry. B·Lynn DennanyRobert J Forster
Jul 20, 2010·Annual Review of Analytical Chemistry·Robert J ForsterTia E Keyes

❮ Previous
Next ❯

Citations

Oct 24, 2013·Nanoscale Research Letters·Pedro Jose RiveroFrancisco Javier Arregui
Jul 21, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Jie ZhuRobert J Forster
Jun 8, 2012·Dalton Transactions : an International Journal of Inorganic Chemistry·James J WalshTia E Keyes
Dec 17, 2010·Biosensors & Bioelectronics·Elaine SpainRobert J Forster
Jun 4, 2014·Chemistry : a European Journal·Na LiDidier Astruc
Nov 15, 2012·Journal of Colloid and Interface Science·Raymond P BriñasJoseph J Barchi
May 28, 2016·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Asif Ali TahirSenthilarasu Sundaram
Jul 9, 2011·Chemical Communications : Chem Comm·Milena MilutinovicNeso Sojic
Jul 3, 2021·Biomedicines·James F Rusling, Robert J Forster
Mar 3, 2011·Analytical Chemistry·Anitha DevadossRobert J Forster

❮ Previous
Next ❯

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.