Determination of photoredox properties of individual kinetically labile complexes in equilibrium systems
-
František Šimo
und
Jozef Šima
Abstract
The paper evaluates the possibilities and limitations in characterising photochemical properties of individual kinetically labile species being in mutual equilibrium. A model of calculating quantum yield values is elaborated and applied to azidokojic iron(III) complexes in aqueous solutions. Based on the known speciation of the complexes as a function of pH, Fe(III) and azidokojic acid concentrations, electronic absorption spectra of individual species, and the determined overall quantum yield of Fe(II) photoformation at irradiation with monochromatised radiation at 366 nm, the quantum yield of Fe(III) to Fe(II) photoreduction was obtained for each of the complexes present in the investigated systems.
[1] Balzani, V., & Carassiti, V. (1970). Photochemistry of coordination compounds. New York, NY, USA: Academic Press. Suche in Google Scholar
[2] Crisponi, G., & Remelli, M. (2008). Iron chelating agents for the treatment of iron overload. Coordination Chemistry Reviews, 252, 1225–1240. DOI: 10.1016/j.ccr.2007.12.014. http://dx.doi.org/10.1016/j.ccr.2007.12.01410.1016/j.ccr.2007.12.014Suche in Google Scholar
[3] Gomes, A. J., Lunardi, C. N., Gonzalez, S., & Tedesco, A. C. (2001). The oxidant action of Polypodium leucotomos extract and kojic acid: reactions with reactive oxygen species. Brazilian Journal of Medical and Biological Research, 34, 1487–1494. DOI: 10.1590/S0100-879X2001001100018. 10.1590/S0100-879X2001001100018Suche in Google Scholar
[4] Halliwell, B., & Gutteridge, J. M. C. (1999). Free radicals in biology and medicine (3rd ed.). Oxford, MS, USA: Oxford University Press. Suche in Google Scholar
[5] Izakovič, M., Šima, J., & Žitňanský, M. Effects of wavelength and substituents on iron(III) photoreduction in trans-[Fe(R-sal-R′-en)(CH3OH)(NCS)] complexes. Journal of Coordination Chemistry, 58, 1039–1046. DOI: 10.1080/00958970500109448. 10.1080/00958970500109448Suche in Google Scholar
[6] Juban, E. A., Smeigh, A. L., Monat, J. E., & McCusker, J. K. (2006). Ultrafast dynamics of ligand-field excited states. Coordination Chemistry Reviews, 250, 1783–1791. DOI: 10.1016/j.ccr.2006.02.010. http://dx.doi.org/10.1016/j.ccr.2006.02.01010.1016/j.ccr.2006.02.010Suche in Google Scholar
[7] Makáňová, J., Šima, J., Brezová, V., & Elias, H. (1997). Kinetic and photoredox behaviour of iron(III) complexes with kojic acid. Chemical Papers, 51, 252–257. Suche in Google Scholar
[8] McCusker, J. K., Walda, K. N., Dunn, R. C., Simon, J. D., Magde, D., & Hendrickson, D. N. (1993). Subpicosecond 1MLCT→5T2 intersystem crossing of low-spin polypyridyl ferrous complexes. Journal of the American Chemical Society, 115, 298–307. DOI: 10.1021/ja00054a043. http://dx.doi.org/10.1021/ja00054a04310.1021/ja00054a043Suche in Google Scholar
[9] Murov, S. L. (1973). Handbook of photochemistry (1st ed.). New York, NY, USA: Marcel Dekker. Suche in Google Scholar
[10] Petrola, R. (1985). Spectrophotometry study on the equilibrium of substituted 3-hydroxy-4H-pyran-4-ones with Zn(II) ions in aqueous solution. Finnish Chemical Letters, 12, 219–226. Suche in Google Scholar
[11] Stuglik, Z., & Zagórski, Z. P. (1981). Pulse radiolysis of neutral iron(II) solutions: oxidation of ferrous ions by OH radicals. Radiation Physics and Chemistry, 17, 229–233. DOI: 10.1016/0146-5724(81)90336-8. 10.1016/0146-5724(81)90336-8Suche in Google Scholar
[12] Sýkora, J., & Šima, J. (1990). Photochemistry of coordination compounds. Coordination Chemistry Reviews, 107, 1–212. DOI: 10.1016/0010-8545(90)80055-X. http://dx.doi.org/10.1016/0010-8545(90)80055-X10.1016/0010-8545(90)80055-XSuche in Google Scholar
[13] Šima, J. (2008a). Optimizing the photoreactivity of chemical compounds — necessity, challenges and obstacles. In T. W. Cartere, & K. S. Verley (Eds.), Coordination chemistry research progress (pp. 71–102). New York, NY, USA: Nova Science Publishers. Suche in Google Scholar
[14] Šima, J. (2008b). Photochemical reactions of iron(III) complexes — classification, mechanisms, and application. In A. Sánchez, & S. J. Gutierrez (Eds.), Photochemistry research progress (pp. 103–160). New York, NY, USA: Nova Science Publishers. Suche in Google Scholar
[15] Šima, J., Chochulová, B., Veverka, M., Makáňová, J., Hajšelová, M., & Bradiaková, A. (1993). Efficiency of the photoreduction of iron(III) complexes with kojic acid-derivatives. Polish Journal of Chemistry, 67, 1369–1374. Suche in Google Scholar
[16] Šima, J., Makáňová, J., & Veverka, M. (1995). Photoredox properties of kojic acid and its derivatives complexed to iron(III). Monatshefte für Chemie, 126, 149–154. DOI: 10.1007/BF00812243. http://dx.doi.org/10.1007/BF0081224310.1007/BF00812243Suche in Google Scholar
[17] Šima, J., Mrázová, J., & Kotočová, A. (1999). Photoredox properties of iron(III) fluoro complexes containing tetradentate open chain N2O2-ligands. Journal of the Chinese Chemical Society, 46, 993–997. 10.1002/jccs.199900137Suche in Google Scholar
[18] Šima, J., & Šípoš, R. (2009). Applied photochemistry of iron(III) compounds. In M. Melník, P. Segľa, & M. Tatarko (Eds.), Insight into coordination, bioinorganic and applied inorganic chemistry (pp. 306–365). Bratislava, Slovakia: STU Press. Suche in Google Scholar
[19] Šípoš, R., Šima, J., Izakovič, M., & Tarapčík, P. (2011). Solution properties of azidokojatoiron(III) complexes. Journal of Solution Chemistry. (in press) 10.1007/s10953-011-9721-3Suche in Google Scholar
© 2011 Institute of Chemistry, Slovak Academy of Sciences
Artikel in diesem Heft
- 5th conference on membrane science and technology PERMEA 2010
- A procedure for the determination of dichloromethane and tetrachloroethene in water using pervaporation and gas chromatography
- Modeling of diffusive transport of benzoic acid through a liquid membrane
- Comparison of ceramic capillary membrane and ceramic tubular membrane with inserted static mixer
- New approach to regeneration of an ionic liquid containing solvent by molecular distillation
- Mass-transfer in pertraction of butyric acid by phosphonium ionic liquids and dodecane
- Determination of carbon in solidified sodium coolant using new ICP-OES methods
- Interpretation of interactions of halogenated hydrocarbons with modified silica adsorbent coated with 3-benzylketoimine group silane
- Adaptive nonlinear control of a continuous stirred tank reactor
- Anaerobic baffled reactor treatment of biodiesel-processing wastewater with high strength of methanol and glycerol: reactor performance and biogas production
- Analysis of streptolydigin degradation and conversion in cultural supernatants of Streptomyces lydicus AS 4.2501
- Spectroscopic and magnetic evidence of coordination properties of bioactive diethyl (pyridin-4-ylmethyl)phosphate ligand with chloride transition-metal ions
- Microstructure and properties of polyhydroxybutyrate-calcium phosphate cement composites
- Intercalation of basic amino acids into layered zirconium proline-N-methylphosphonate phosphate
- Effect of sol-gel preparation method on particle morphology in pure and nanocomposite PZT thin films
- Synthesis, spectroscopic and configurational study, and ab initio calculations of new diazaphospholanes
- Synthesis and in vitro antimicrobial activity of new 3-(2-morpholinoquinolin-3-yl) substituted acrylonitrile and propanenitrile derivatives
- Silicon-based thiourea-mediated and microwave-assisted thio-Michael addition under solvent-free reaction conditions
- One-pot synthesis of 2-amino-3-cyano-4-arylsubstituted tetrahydrobenzo[b]pyrans catalysed by silica gel-supported polyphosphoric acid (PPA-SiO2) as an efficient and reusable catalyst
- Comparison and optimisation of biodiesel production from Jatropha curcas oil using supercritical methyl acetate and methanol
- Determination of photoredox properties of individual kinetically labile complexes in equilibrium systems
- A halogenated coumarin from Ficus krishnae
- 4β-Isocyanopodophyllotoxins: valuable precursors for the synthesis of new podophyllotoxin analogues
- Environmentally benign one-pot synthesis and antimicrobial activity of 1-methyl-2,6-diarylpiperidin-4-ones
Artikel in diesem Heft
- 5th conference on membrane science and technology PERMEA 2010
- A procedure for the determination of dichloromethane and tetrachloroethene in water using pervaporation and gas chromatography
- Modeling of diffusive transport of benzoic acid through a liquid membrane
- Comparison of ceramic capillary membrane and ceramic tubular membrane with inserted static mixer
- New approach to regeneration of an ionic liquid containing solvent by molecular distillation
- Mass-transfer in pertraction of butyric acid by phosphonium ionic liquids and dodecane
- Determination of carbon in solidified sodium coolant using new ICP-OES methods
- Interpretation of interactions of halogenated hydrocarbons with modified silica adsorbent coated with 3-benzylketoimine group silane
- Adaptive nonlinear control of a continuous stirred tank reactor
- Anaerobic baffled reactor treatment of biodiesel-processing wastewater with high strength of methanol and glycerol: reactor performance and biogas production
- Analysis of streptolydigin degradation and conversion in cultural supernatants of Streptomyces lydicus AS 4.2501
- Spectroscopic and magnetic evidence of coordination properties of bioactive diethyl (pyridin-4-ylmethyl)phosphate ligand with chloride transition-metal ions
- Microstructure and properties of polyhydroxybutyrate-calcium phosphate cement composites
- Intercalation of basic amino acids into layered zirconium proline-N-methylphosphonate phosphate
- Effect of sol-gel preparation method on particle morphology in pure and nanocomposite PZT thin films
- Synthesis, spectroscopic and configurational study, and ab initio calculations of new diazaphospholanes
- Synthesis and in vitro antimicrobial activity of new 3-(2-morpholinoquinolin-3-yl) substituted acrylonitrile and propanenitrile derivatives
- Silicon-based thiourea-mediated and microwave-assisted thio-Michael addition under solvent-free reaction conditions
- One-pot synthesis of 2-amino-3-cyano-4-arylsubstituted tetrahydrobenzo[b]pyrans catalysed by silica gel-supported polyphosphoric acid (PPA-SiO2) as an efficient and reusable catalyst
- Comparison and optimisation of biodiesel production from Jatropha curcas oil using supercritical methyl acetate and methanol
- Determination of photoredox properties of individual kinetically labile complexes in equilibrium systems
- A halogenated coumarin from Ficus krishnae
- 4β-Isocyanopodophyllotoxins: valuable precursors for the synthesis of new podophyllotoxin analogues
- Environmentally benign one-pot synthesis and antimicrobial activity of 1-methyl-2,6-diarylpiperidin-4-ones
