Highly stable redox-active molecular layers by covalent grafting to conductive diamond.
نویسندگان
چکیده
We demonstrate a modular "click"-based functionalization scheme that allows inexpensive conductive diamond samples to serve as an ultrastable platform for surface-tethered electrochemically active molecules stable out to ∼1.3 V vs Ag/AgCl. We have cycled surface-tethered Ru(tpy)(2) to this potential more than 1 million times with little or no degradation in propylene carbonate and only slightly reduced stability in water and acetonitrile.
منابع مشابه
Catalytic CO2-to-CO conversion in water by covalently functionalized carbon nanotubes with a molecular iron catalyst.
The covalent grafting of an Fe porphyrin on carbon nanotubes led to efficient electroreduction of CO2 into CO in water (pH 7.3). CO was obtained with high selectivity and turnover at 0.5 V overpotential. The grafting strategy may be further extended to various conductive and semi-conductive surfaces.
متن کاملCovalent Modification of Glassy Carbon Electrode with an Imidazolium based Methoxysilyl Ionic Liquid Nanoparticles: Application in Determination of Redox System
Glassy carbon (GC) is the most commonly used carbon-based electrode in the analytical laboratory. Because of the high background current and low electrode response, modification of this electrode can be done by various materials and techniques. An ionic liquid (IL), 1-methyl-3-(3-trimethoxysilyl propyl) imidazoliumbis (trifluoromethylsulfonyl) imide, was covalently cross linked onto the GC surf...
متن کاملCoating of a thin layer of gold nanoparticles on an FTO conductive glass substrate by Electrodeposition method, as the active substrate of SERS, to study the molecular vibrations of the amino acid tyrosine
This article has no abstract.
متن کاملNanoparticles: scaffolds for molecular recognition.
Monolayer and mixed-monolayer protected clusters (MPCs and MMPCs) have great potential to combine molecular functionality with the intrinsic properties of nanometer-sized scaffolds. This synergy can be used to create complex functional devices, including redox-active, electronic, or magnetic storage devices, solution-based sensors, and highly efficient catalysts. This review outlines some of th...
متن کاملApplicability of the Dendrimer-quantum Dot (Den-QD) Bioconjugate as a Novel Nanocomposite for Signal Amplification in the Fabrication of Cocaine Aptasensor
A selective aptasensor was developed using the electrochemical transduction method for the ultrasensitive detection of cocaine. In this method, dendrimer-quantum dot (Den-QD) bioconjugate was utilized as a specific nanocomposite to efficiently fabricate the aptasensor. CdTe QD, which carries highly significant properties, was immobilized on the surface of a glassy carbon electrode (GCE), and po...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Journal of the American Chemical Society
دوره 133 15 شماره
صفحات -
تاریخ انتشار 2011