BIOMAT Database Logo BIOMAT Database Logo

Synthesis and properties of [Pt(4-CO(2)CH(3)-py)(2)(mnt)]: comparison of pyridyl and bipyridyl-based dyes for solar cells. 2008

Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
School of Chemistry, Joseph Black Building, King's Buildings, West Mains Road, Edinburgh, UK.

The dye complexes [Pt(4-CO(2)R-py)(2)(mnt)] (R = H (3a), CH(3) (3b)) and the precursor complexes [Pt(4-CO(2)R-py)(2)Cl(2)] (2a, 2b) (py = pyridyl) were synthesised, characterised by electrochemical, spectroscopic, spectroelectrochemical (UV-vis-nIR and in situ EPR) and hybrid DFT computational methods and attached to a TiO(2) substrate to determine charge recombination kinetics. The results were compared to the bipyridyl analogues [Pt{X,X'-(CO(2)R)-2,2'-bipyridyl}(mnt)], (X = 3 or 4). The electronic characteristics of the bis-pyridyl complex were found to be different to the bipyridyl complexes making the former harder to reduce, shifting the lowest-energy absorption band to higher energy and showing separate degenerate LUMO orbitals on the two pyridine rings. The latter point determines that the di-reduced pyridyl complex remains EPR active, unlike the bipyridyl analogue. Complex 3a attached to nanocrystalline TiO(2) shows a long charge recombination lifetime in comparison with the analogous complex with the ubiquitous 4,4'-(CO(2)H)(2)-bipyridyl ligand, suggesting that pyridyl complexes may possess some advantage over bipyridyl complexes in dye-sensitised solar cells.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D009942 Organometallic Compounds A class of compounds of the type R-M, where a C atom is joined directly to any other element except H, C, N, O, F, Cl, Br, I, or At. (Grant & Hackh's Chemical Dictionary, 5th ed) Metallo-Organic Compound,Metallo-Organic Compounds,Metalloorganic Compound,Organometallic Compound,Metalloorganic Compounds,Compound, Metallo-Organic,Compound, Metalloorganic,Compound, Organometallic,Compounds, Metallo-Organic,Compounds, Metalloorganic,Compounds, Organometallic,Metallo Organic Compound,Metallo Organic Compounds
D010984 Platinum A heavy, soft, whitish metal, resembling tin, with atomic number 78, atomic weight 195.084, symbol Pt. 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". Platinum Black
D011789 Quantum Theory The theory that the radiation and absorption of energy take place in definite quantities called quanta (E) which vary in size and are defined by the equation E Quantum Theories,Theories, Quantum,Theory, Quantum
D004396 Coloring Agents Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS. Coloring Agent,Dye,Dyes,Organic Pigment,Stain,Stains,Tissue Stain,Tissue Stains,Organic Pigments,Pigments, Inorganic,Agent, Coloring,Inorganic Pigments,Pigment, Organic,Pigments, Organic,Stain, Tissue,Stains, Tissue
D004563 Electrochemistry The study of chemical changes resulting from electrical action and electrical activity resulting from chemical changes. Electrochemistries
D004578 Electron Spin Resonance Spectroscopy A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING. ENDOR,Electron Nuclear Double Resonance,Electron Paramagnetic Resonance,Paramagnetic Resonance,Electron Spin Resonance,Paramagnetic Resonance, Electron,Resonance, Electron Paramagnetic,Resonance, Electron Spin,Resonance, Paramagnetic
D004579 Electron Transport The process by which ELECTRONS are transported from a reduced substrate to molecular OXYGEN. (From Bennington, Saunders Dictionary and Encyclopedia of Laboratory Medicine and Technology, 1984, p270) Respiratory Chain,Chain, Respiratory,Chains, Respiratory,Respiratory Chains,Transport, Electron
D012993 Solar Energy Energy transmitted from the sun in the form of electromagnetic radiation. Solar Power,Energies, Solar,Energy, Solar,Power, Solar,Solar Energies
D013056 Spectrophotometry, Ultraviolet Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Ultraviolet Spectrophotometry

Related Publications

Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Synthesis, Structure, and Reactivity of [RuCl(PP)L]PF(6) (PP = (PPh(3))(2), Ph(2)P(CH(2))(4)PPh(2); L = P(py)(3), PPh(py)(2), py = 2-pyridyl). The "Missing" P,N,N'-Coordination Mode for 2-Pyridylphosphines.
December 1997, Inorganic chemistry,
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Synthesis, structure, and properties of [Pt(II)(diimine)(dithiolate)] dyes with 3,3'-, 4,4'-, and 5,5'-disubstituted bipyridyl: applications in dye-sensitized solar cells.
January 2005, Inorganic chemistry,
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Direct Lanthanide-Transition Metal Interactions: Synthesis of (NH(3))(2)YbFe(CO)(4) and Crystal Structures of {[(CH(3)CN)(3)YbFe(CO)(4)](2).CH(3)CN}(infinity) and [(CH(3)CN)(3)YbFe(CO)(4)](infinity).
June 1996, Inorganic chemistry,
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Excited-state properties of Rh(2)(O(2)CCH(3))(4)(L)(2) (L = CH(3)OH, THF, PPh(3), py).
March 2001, Inorganic chemistry,
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Organometallic Selenolates. 5.(1) Synthesis and Complexing Properties of 2-Propene- and 2-Methyl-2-propeneselenolato Molybdenum and Tungsten Compounds. Crystal Structures of cp(CO)(3)WSeCH(2)C(CH(3))=CH(2), [cp(CO)(2)MoSeCH(2)C(CH(3))=CH(2)](2), [cp(CO)(3)Mo(&mgr;-SeCH(2)C(CH(3))=CH(2))W(CO)(5)], [cp(CO)(3)Mo(&mgr;-SeCH(2)C(CH(3))=CH(2))Mo(CO)(5)], and [cp(CO)(3)Mo(&mgr;-SeCH(2)CH=CH(2))Mo(CO)(5)].
May 1997, Inorganic chemistry,
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Phenyl-(2-pyridyl)-(3-pyridyl)-(4-pyridyl)methane: synthesis, chiroptical properties, and theoretical calculation of its absolute configuration.
August 2007, Chemistry, an Asian journal,
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Synthesis and structures of tris(2-pyridyl)aluminate sandwich compounds [{RAl(2-py')2}2M] (py' = 2-pyridyl, M = Ca, Mn, Fe).
October 2014, Dalton transactions (Cambridge, England : 2003),
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Structural and Magnetic Properties of M(mnt)(2) Salts (M = Ni, Pt, Cu) with a Ferrocene-Based Cation, [FcCH(2)N(CH(3))(3)](+). Interplay between M.M and M.S Intermolecular Interactions.
December 1998, Inorganic chemistry,
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Direct synthesis of the Janus-head ligand ((Me)Py)3Sn-Sn((Me)Py)3 using an unusual pyridyl-transfer reaction ((Me)Py = 6-methyl-2-pyridyl).
October 2014, Dalton transactions (Cambridge, England : 2003),
Lucy P Moorcraft, and Ana Morandeira, and James R Durrant, and James R Jennings, and Laurence M Peter, and Simon Parsons, and Andrew Turner, and Lesley J Yellowlees, and Neil Robertson
Charge-Transfer Salts of Octamethylferrocenyl Thioethers and [M(mnt)(2)](-) Complexes (M = Ni, Co, Pt). Synthesis, Structure, and Physical Properties.
August 1998, Inorganic chemistry,
Copied contents to your clipboard!