On the donor-acceptor interaction and electron transfer at the titanium oxide-organic dye interface

2007 ◽  
Vol 49 (10) ◽  
pp. 2004-2009 ◽  
Author(s):  
E. F. Sheka ◽  
V. A. Zayets
Keyword(s):  
Electron Transfer ◽  
Titanium Oxide ◽  
Organic Dye ◽  
Acceptor Interaction ◽  
Donor Acceptor

scholarly journals Remarkable Dependence of the Final Charge Separation Efficiency on the Donor-Acceptor Interaction in Photoinduced Electron Transfer

2015 ◽  
Vol 128 (2) ◽  
pp. 639-643 ◽  
Author(s):  
Tomohiro Higashino ◽  
Tomoki Yamada ◽  
Masanori Yamamoto ◽  
Akihiro Furube ◽  
Nikolai V. Tkachenko ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Separation ◽  
Photoinduced Electron Transfer ◽  
Separation Efficiency ◽  
Acceptor Interaction ◽  
Donor Acceptor ◽  
Charge Separation Efficiency

scholarly journals Stabilized photoanodes for water oxidation by integration of organic dyes, water oxidation catalysts, and electron-transfer mediators

2018 ◽  
Vol 115 (34) ◽  
pp. 8523-8528 ◽  
Author(s):  
Degao Wang ◽  
Michael S. Eberhart ◽  
Matthew V. Sheridan ◽  
Ke Hu ◽  
Benjamin D. Sherman ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Tin Oxide ◽  
Water Oxidation ◽  
Organic Dyes ◽  
Organic Dye ◽  
Oxidation Catalyst ◽  
Donor Acceptor ◽  
Solar Water Oxidation ◽  
Nanoparticle Core ◽  
Phenyl Vinyl

Stabilized photoanodes for light-driven water oxidation have been prepared on nanoparticle core/shell electrodes with surface-stabilized donor–acceptor chromophores, a water oxidation catalyst, and an electron-transfer mediator. For the electrode, fluorine-doped tin oxide FTO|SnO2/TiO2|-Org1-|1.1 nm Al2O3|-RuP2+-WOC (water oxidation catalyst) with Org1 (1-cyano-2-(4-(diphenylamino)phenyl)vinyl)phosphonic acid), the mediator RuP2+ ([Ru(4,4-(PO3H2)2-2,2-bipyridine)(2,2-bipyridine)2]2+), and the WOC, Ru(bda)(py(CH2)(3or10)P(O3H)2)2 (bda is 2,2-bipyridine-6,6-dicarboxylate with x = 3 or 10), solar excitation resulted in photocurrents of ∼500 µA/cm2 and quantitative O2 evolution at pH 4.65. Related results were obtained for other Ru(II) polypyridyl mediators. For the organic dye PP (5-(4-(dihydroxyphosphoryl)phenyl)-10,15,20-Tris(mesityl)porphyrin), solar water oxidation occurred with a driving force near 0 V.

Photoinduced Electron Transfer in Dyads with (R)-/(S)-Naproxen and (S)-Tryptophan

2017 ◽  
Vol 231 (3) ◽  
Author(s):  
Ekaterina A. Khramtsova ◽  
Alexandra A. Ageeva ◽  
Alexander A. Stepanov ◽  
Viktor F. Plyusnin ◽  
Tatyana V. Leshina
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Amino Acid ◽  
Quantum Yields ◽  
Intramolecular Electron Transfer ◽  
Active Centers ◽  
Acceptor Interaction ◽  
Enzyme Binding ◽  
Fluorescence Quantum Yields ◽  
Donor Acceptor

AbstractShort-lived intermediates arising from the donor-acceptor interaction of non-steroidal anti-inflammatory drug (NSAID) – (S)-naproxen (NPX) and its (R)-enantiomer with the tryptophan amino acid residue (Trp) have been studied by spin chemistry and photochemistry methods. The donor-acceptor interaction has caried out in a model linked system – dyad under the UV-irradiation. Interest in the NPX-Trp dyad diastereomers is connected with the possibility of using them as models of ligand-enzyme binding as long as amino acid residues are located at the enzyme’s active centers. It is these residues that interact with NSAID during the binding. It is widely thought that charge transfer processes are involved in the process of drug-enzyme binding. Withing this framework the role of charge transfer in NPX-Trp excited state quenching have been investigated. The analysis of the chemically induced dynamic nuclear polarization (CIDNP), as well as fluorescence kinetics and quantum yield in different polarity media has shown that the main channel of NPX fluorescence quenching is the intramolecular electron transfer between NPX and Trp fragments. Electron transfer rate constants and fluorescence quantum yields of diastereomers have demonstrated stereodifferentiation.

scholarly journals In-Depth Investigation of a Donor–Acceptor Interaction on the Heavy-Group-14@Group-13-Diyls in Transition-Metal Tetrylone Complexes: Structure, Bonding, and Property

ACS Omega ◽  
2020 ◽  
Vol 5 (33) ◽  
pp. 21271-21287
Author(s):  
Huynh Thi Phuong Loan ◽  
Thanh Q. Bui ◽  
Tran Thi Ai My ◽  
Nguyen Thi Thanh Hai ◽  
Duong Tuan Quang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Group 14 ◽  
Acceptor Interaction ◽  
Group 13 ◽  
Donor Acceptor ◽  
Heavy Group

Photoelectrochemical properties of supramolecular composites of an anionic zinc chlorin and Li+@C60 on SnO2

2014 ◽  
Vol 18 (10n11) ◽  
pp. 982-990 ◽  
Author(s):  
Kei Ohkubo ◽  
Yuki Kawashima ◽  
Kentaro Mase ◽  
Hayato Sakai ◽  
Taku Hasobe ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Photovoltaic Cells ◽  
Lithium Ion ◽  
Transparent Electrode ◽  
Supramolecular Complex ◽  
Photoelectrochemical Properties ◽  
Triplet Excited State ◽  
Optically Transparent ◽  
Donor Acceptor

An electron donor–acceptor supramolecular complex was formed between an anionic zinc chlorin carboxylate ( ZnCh -) and lithium-ion-encapsulated [60]fullerene ( Li +@ C 60) by an electrostatic interaction in benzonitrile ( PhCN ). Photoinduced electron transfer in the supramolecular complex of ZnCh -/ Li +@ C 60 resulted in the formation of the charge-separated state via electron transfer from the triplet excited state of ZnCh - to Li +@ C 60. We report herein photovoltaic cells using ZnCh -/ Li +@ C 60 nanoclusters, which are assembled on the optically transparent electrode (OTE) of nanostructured SnO 2 (OTE/ SnO 2). The photoelectrochemical behavior of the nanostructured SnO 2 film of supramolecular nanoclusters of ZnCh - and Li +@ C 60 denoted as OTE/ SnO 2/( ZnCh -/ Li +@ C 60)n is significantly higher than the single component films of ZnCh - or Li +@ C 60 clusters, denoted as OTE/ SnO 2/( ZnCh -)n or OTE/ SnO 2/( Li +@ C 60)n.

Sign in / Sign up

Export Citation Format

Share Document