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Showing 1 to 12 of 204 entries
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Hunting for the elusive shallow traps in TiO2 anatase.

Chemical communications (Cambridge, England)

Antila LJ, Santomauro FG, Hammarström L, Fernandes DL, Sá J.
PMID: 26060844
Chem Commun (Camb). 2015 Jul 11;51(54):10914-6. doi: 10.1039/c5cc02876k.

Understanding electron mobility on TiO2 is crucial because of its applications in photocatalysis and solar cells. This work shows that shallow traps believed to be involved in electron migration in TiO2 conduction band are formed upon band gap excitation,...

Accumulative charge separation for solar fuels production: coupling light-induced single electron transfer to multielectron catalysis.

Accounts of chemical research

Hammarström L.
PMID: 25675365
Acc Chem Res. 2015 Mar 17;48(3):840-50. doi: 10.1021/ar500386x. Epub 2015 Feb 12.

The conversion and storage of solar energy into a fuel holds promise to provide a significant part of the future renewable energy demand of our societies. Solar energy technologies today generate heat or electricity, while the large majority of...

Kinetic Evidence of Two Pathways for Charge Recombination in NiO-Based Dye-Sensitized Solar Cells.

The journal of physical chemistry letters

D'Amario L, Antila LJ, Pettersson Rimgard B, Boschloo G, Hammarström L.
PMID: 26262652
J Phys Chem Lett. 2015 Mar 05;6(5):779-83. doi: 10.1021/acs.jpclett.5b00048. Epub 2015 Feb 13.

Mesoporous nickel oxide has been used as electrode material for p-type dye-sensitized solar cells (DSCs) for many years but no high efficiency cells have yet been obtained. One of the main issues that lowers the efficiency is the poor...

Biological approaches to artificial photosynthesis, fundamental processes and theoretical approaches: general discussion.

Faraday discussions

Artero V, Hammarström L, Fan F, Whang DR, Martinez J, Harriman A, Noguchi T, Karlsson J, Summers P, Itoh S, Cogdell R, Kibler A, Ehrmaier J, Tamiaki H, Fujita E, Shima S, Yoshino S, Inoue H, Wasielewski M, Corry T, Gust D, Cassiola F, Ishida H, Takagi K, Kang SO, Li C, Sun L, Park H, Hashimoto H, Amao Y, Son EJ, Kamiya N, Shen JR, Yamaguchi K.
PMID: 28534894
Faraday Discuss. 2017 Jun 02;198:147-168. doi: 10.1039/c7fd90016c.

No abstract available.

Synthesis of oligothiophene-bridged bisporphyrins and study of the linkage dependence of the electronic coupling.

Chemistry (Weinheim an der Bergstrasse, Germany)

Odobel F, Suresh S, Blart E, Nicolas Y, Quintard JP, Janvier P, Le Questel JY, Illien B, Rondeau D, Richomme P, Häupl T, Wallin S, Hammarström L.
PMID: 12489234
Chemistry. 2002 Jul 02;8(13):3027-46. doi: 10.1002/1521-3765(20020703)8:13<3027::AID-CHEM3027>3.0.CO;2-Z.

A set of twelve porphyrin dimers has been prepared to give information on how the type of connectivity between a porphyrin core and a bridge can influence the interporphyrin electronic interaction. The new porphyrin systems are substituted directly at...

[Collective affiliation to the Medical Society is old-fashioned--time for renewal!].

Lakartidningen

Sjödahl R, Hammarström M, Wiklund L, Larsson LT, Behndig A.
PMID: 14763095
Lakartidningen. 2004 Jan 15;101(3):218; discussion 219.

No abstract available.

Femtosecond transient absorption anisotropy study on [Ru(bpy)3]2+ and [Ru(bpy)(py)4]2+. Ultrafast interligand randomization of the MLCT state.

The journal of physical chemistry. A

Wallin S, Davidsson J, Modin J, Hammarström L.
PMID: 16833810
J Phys Chem A. 2005 Jun 02;109(21):4697-704. doi: 10.1021/jp0509212.

It is known that the relaxed excited state of [Ru(bpy)3]2+ is best described as a metal to ligand charge transfer (MLCT) state having one formally reduced bipyridine and two neutral. Previous reports have suggested [Malone, R. et al. J....

Photoinduced ultrafast dynamics of coumarin 343 sensitized p-type-nanostructured NiO films.

The journal of physical chemistry. B

Morandeira A, Boschloo G, Hagfeldt A, Hammarström L.
PMID: 16853506
J Phys Chem B. 2005 Oct 20;109(41):19403-10. doi: 10.1021/jp053230e.

Photoinduced electron transfer from the valence band of nanocrystalline NiO, a p-type semiconductor, to an excited bound dye, coumarin 343, and the subsequent recombination have been measured by femtosecond transient absorbance spectroscopy probing with white light. It was found...

Electronic interactions and energy transfer in oligothiophene-linked bis-porphyrins.

Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology

Wallin S, Hammarström L, Blart E, Odobel F.
PMID: 17047835
Photochem Photobiol Sci. 2006 Sep;5(9):828-34. doi: 10.1039/b601092j. Epub 2006 Jul 18.

The photophysical and spectroscopic properties of a series of bis-porphyrin compounds meso-meso-linked via oligothiophene bridges are reported. In particular the effects of the different bridges on the porphyrin properties as well as their ability to enhance energy transfer is...

Spectroscopic and structural investigations reveal the signaling mechanism of a luminescent molybdate sensor.

Inorganic chemistry

Corden VA, Duhme-Klair AK, Hostachy S, Perutz RN, Reddig N, Becker HC, Hammarström L.
PMID: 21218777
Inorg Chem. 2011 Feb 07;50(3):1105-15. doi: 10.1021/ic1019422. Epub 2011 Jan 10.

A heteroditopic ligand H(2)-L consisting of a dihydroxybenzene (catechol)-unit linked via an amide bond to a pyridyl-unit and its methyl-protected precursor Me(2)-L were synthesized, characterized, and their photophysical properties investigated. The three accessible protonation states of the ligand, H(3)-L(+),...

Slow-reacting substances and leukotrienes.

Immunology today

Samuelsson B, Hammarström S.
PMID: 25290641
Immunol Today. 1981 Jan;2(1):3-6. doi: 10.1016/0167-5699(81)90003-7.

No abstract available.

Ru-based donor-acceptor photosensitizer that retards charge recombination in a p-type dye-sensitized solar cell.

Dalton transactions (Cambridge, England : 2003)

Freys JC, Gardner JM, D'Amario L, Brown AM, Hammarström L.
PMID: 23018189
Dalton Trans. 2012 Nov 14;41(42):13105-11. doi: 10.1039/c2dt30829k.

We report on the synthesis and characterization of a donor-acceptor ruthenium polypyridyl complex as a photosensitizer for p-type dye-sensitized solar cells (DSSCs). The electrochemical, photophysical, and photovoltaic performance of two ruthenium-based photosensitizers were tested in NiO-based DSSCs; bis-(2,2'-bipyridine-4,4'-dicarboxylic acid)(2)N-(1,10-phenanthroline)-4-nitronaphthalene-1,8-dicarboximide...

Showing 1 to 12 of 204 entries