Online citations, reference lists, and bibliographies.
← Back to Search

Singlet Oxygen Production In Water: Aggregation And Charge-Transfer Effects

C. Tanielian, and Christian Wolff, M. Esch
Published 1996 · Chemistry

Cite This
Download PDF
Analyze on Scholarcy
Precise quantum yields for generation of singlet molecular oxygen, O2(1Δg), have been measured for tetrakis(4-sulfonatophenyl)porphyrin (TSPP), closely-related water-soluble porphyrin derivatives, and tris(2,2‘-bipyridyl)ruthenium(II) (bpy3Ru2+) in O2-saturated water. Under the experimental conditions, TSPP is present in an aggregated state, but the measured quantum yield for formation of O2(1Δg), ΦΔ = 0.51, remains on the same order as that of the corresponding monomer in methanol, ΦΔ = 0.70. Comparison with the quantum yield for formation of the triplet state indicates that quenching of the triplet by O2 gives O2(1Δg) with an efficiency of ca. 80%. There is a small but significant increase in ΦΔ when D2O is used in place of H2O. For the other porphyrin derivatives, the ability of the aggregate to sensitize formation of O2(1Δg) appears to depend on the total electronic charge resident on the molecule, decreasing with decreasing negative charge. A strong solvent dependence noted for O2(1Δg) production wit...

This paper is referenced by
Research advances in the use of tetrapyrrolic photosensitizers for photodynamic therapy.
Emma S Nyman (2004)
Singlet oxygen quantum yields of potential porphyrin-based photosensitisers for photodynamic therapy.
S. Mathai (2007)
A Theranostic Agent Combining a Two-Photon-Absorbing Photosensitizer for Photodynamic Therapy and a Gadolinium(III) Complex for MRI Detection.
Julie Schmitt (2016)
A Compilation of Singlet Oxygen Yields from Biologically Relevant Molecules
R. Redmond (1999)
Core-shell poly-methylmethacrylate nanoparticles as effective carriers of electrostatically loaded anionic porphyrin.
G. Varchi (2013)
Multicationic AIEgens for Unimolecular Photodynamic Theranostics and Two-Photon Fluorescence Bioimaging
Yuting Gao (2020)
Sweet chiral porphyrins as singlet oxygen sensitizers for asymmetric Type II photooxygenation.
Axel G Griesbeck (2011)
Asymmetric ZnPc–TEG photosensitizers: the effect of Pc substitution on phototoxicity
Dominic K. Muli (2015)
Excited State Dynamics of a Photobiologically Active Ru(II) Dyad Are Altered in Biologically Relevant Environments.
C. Reichardt (2017)
Photosensitised oxidation of a water pollutant using sulphonated porphyrin
Marta Gmurek (2011)
Photodynamic therapy efficacy enhanced by dynamics: the role of charge transfer and photostability in the selection of photosensitizers.
L. Arnaut (2014)
A water soluble donor-acceptor-donor conjugated oligomer as a photosensitizer for mitochondria-targeted photodynamic therapy.
Jian Sun (2018)
Tellurorhodamine photocatalyzed aerobic oxidation of organo-silanes and phosphines by visible-light.
Irving D. Rettig (2019)
Effects of noncovalently bound quinones on the ground and triplet states of zinc chlorins in solution and bound to de novo synthesized peptides.
Anke Mennenga (2006)
The Influence of the Properties of an Aqueous Medium on Dimegin Aggregation
Ig. V. Bagrov (2019)
Time‐Resolved Study of the Sensitized Formation and Decay of 1 O2( 1 δg) in the Presence of Cyclodextrins*
Carlos N. Sanramé (1998)
Singlet oxygen formation efficiencies following quenching of excited singlet and triplet states of aromatic hydrocarbons by molecular oxygen
A. Abdel-Shafi (2001)
Design of new protein drug delivery system (PDDS) with photoactive compounds as a potential application in the treatment of glioblastoma brain cancer.
Maryanne Trafani de Melo (2020)
Photophysical studies of graphene quantum dots - Pyrene-derivatized porphyrins conjugates when encapsulated within Pluronic F127 micelles
Muthumuni Managa (2018)
In Situ Growth of CuS/SiO2-Based Multifunctional Nanotherapeutic Agents for Combined Photodynamic/Photothermal Cancer Therapy.
Xiangmei Liu (2018)
Polymer bound pyrrole compounds, IX. Photophysical and singlet molecular oxygen photosensitizing properties of mesoporphyrin IX covalently bound to a low molecular weight polyethylene glycol
Pilar Abós (1997)
Photochemical switching of luminescence and singlet oxygen generation by chemical signal communication.
S. Silvi (2009)
Singlet oxygen production upon two-photon excitation of TiO2 in chloroform.
Wenbing Li (2009)
Selective Detection of Trinitrophenol by Amphiphilic Dimethylaminopyridine-Appended Zn(II)phthalocyanines at the Near-Infrared Region
S. Kasthuri (2019)
Addition reactions and longitudinal field spin relaxation of small radicals in gases: Mu+CO and Mu+N2O
J. J. Pan (1997)
The role of photosensitizer molecular charge and structure on the efficacy of photodynamic therapy against Leishmania parasites.
O. Akilov (2006)
Rapid energy transfer in non-porous metal–organic frameworks with caged Ru(bpy)32+ chromophores: oxygen trapping and luminescence quenching
C. A. Kent (2013)
Mechanistic and Kinetic Aspects of Photosensitization in the Presence of Oxygen † §
C. Tanielian (2000)
Improving the Efficiency of Mustard Gas Simulant Detoxification by Tuning the Singlet Oxygen Quantum Yield in Metal-Organic Frameworks and Their Corresponding Thin Films.
Cassandra T Buru (2018)
Design of porphyrin-based photosensitizers for photodynamic therapy
L. Arnaut (2011)
Quantification of reactive oxygen species generation by photoexcitation of PEGylated quantum dots.
E. Yaghini (2014)
CuAAC click reactions for the design of multifunctional luminescent ruthenium complexes.
N. Zabarska (2016)
See more
Semantic Scholar Logo Some data provided by SemanticScholar