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We report a series of cobalt complexes with various polypyridyl ligands, where the oxidation potential is tuned from 0.17 to 0.34 V vs. ferrocene. The highest occupied molecular orbitals (HOMO) of the cobalt complexes were stabilized by adding electron acceptor groups on pyridyl or replacing pyridyl by pyrazole. These complexes are then used as one-electron redox mediators in dye sensitized solar cells (DSSCs) together with polymer based cathode resulting in an excellent performance. The performance of DSSCs using the molecularly engineered cobalt redox shuttle and poly(3,4-alkylthiophenes) based cathode is better than the triiodide/iodide redox shuttle with platinized cathode. The use of high surface area poly(3,4-propylenedioxythiophene) based nanoporous layers allows higher catalytic activity thus minimizing the electrode-electrolyte interface issues.
Laboratory of Photonics and Interfaces, Department de Chimie, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland. email@example.com.
This article was published in the following journal.
Name: Physical chemistry chemical physics : PCCP
Co-sensitization by using two or more sensitizers with complementary absorption spectra to expand the spectral response range is an effective approach to enhance device performance of quantum dot sens...
Correction for 'CuFeS2 colloidal nanocrystals as an efficient electrocatalyst for dye sensitized solar cells' by Yihui Wu et al., Chem. Commun., 2016, DOI: .
Cubic CuFeS2 nanocrystals (NCs) have been obtained via a facile colloidal chemistry approach and they show remarkable catalytic activity in the reduction of I3(-). Dye sensitized solar cells (DSSCs) w...
Exploiting cost-effective and highly efficient counter electrodes (CEs) has been a persistent objective for practical application of dye-sensitized solar cells (DSSCs). Here, we present an efficient C...
A new type of polyoxometalate material, K6SiW11O39Ni(H2O)·xH2O (denoted as SiW11Ni), was successfully synthesized and introduced to a dye-sensitized solar cell (DSSC) with modified traditional Pt as ...
This study will test the safety of giving you specialized white cells from your donor. They are called WT1 sensitized T cells. They have been grown in the lab and are immunized against a p...
The purpose of this study is to find out if the drug AZD6244 can improve the radioactive iodine uptake by the patient's metastatic thyroid cancer. The investigator will also be testing the...
High sodium intake causes hypertension. Various efforts for reducing salt consumption are proceeding all over the world. Solar salt contains reduced sodium and abundant mineral, such as ca...
This phase I trial is studying the side effects and best dose of iodine I 131 when given together with pazopanib hydrochloride in treating patients with recurrent and/or metastatic thyroid...
RATIONALE: Radioactive drugs, such as radioactive iodine, may carry radiation directly to tumor cells and not harm normal cells. Placing a gene called Ad5CMV-NIS in prostate cancer cells m...
Platinum. A heavy, soft, whitish metal, resembling tin, atomic number 78, atomic weight 195.09, symbol Pt. (From Dorland, 28th ed) It is used in manufacturing equipment for laboratory and industrial use. It occurs as a black powder (platinum black) and as a spongy substance (spongy platinum) and may have been known in Pliny's time as "alutiae".
Stable iodine atoms that have the same atomic number as the element iodine, but differ in atomic weight. I-127 is the only naturally occurring stable iodine isotope.
Inorganic compounds which contain platinum as the central atom.
Unstable isotopes of iodine that decay or disintegrate emitting radiation. I atoms with atomic weights 117-139, except I 127, are radioactive iodine isotopes.
A form of IODINE deficiency disorders characterized by an enlargement of the THYROID GLAND in a significantly large fraction of a POPULATION GROUP. Endemic goiter is common in mountainous and iodine-deficient areas of the world where the DIET contains insufficient amount of iodine.