Biomedical subjects

Maria Hatzimarinaki

Publications and source records attributed to Maria Hatzimarinaki.

6 recordsLinked to original sources

PubMed2006

Novel methodology for the preparation of five-, seven-, and nine-membered fused rings on C60.

[reaction: see text] The photocycloaddition of dienyl cyclopropanes to C(60) gives a new synthetic approach to yield stereospecifically five-, seven-, and nine-membered [60]fullerene adducts. Our results suggest the formation of a biradical intermediate between the dienyl substrate and C(60). An electron transfer between the triplet excited state of C(60) and the dienyl substrate precedes the formation of the intermediate.

Journal Article↗

PubMed2006

Reaction of an Aza[60]fullerene radical with diphenylmethanes and fluorenes: a mechanistic approach.

[reaction: see text] The mechanism of the reaction of azafullerene radical C(59)N(*) with diphenylmethane and 9-methyl-9H-fluorene has been investigated. The primary and secondary kinetic isotope effects provide strong evidence for a stepwise mechanism in which the hydrogen-atom abstraction is the rate-determining step.

Journal Article↗

PubMed2005

Biradical intermediate in the [2 + 2] photocycloaddition of dienes and alkenes to [60]fullerene.

The photocycloaddition of vinylcyclopropanes to C60 yields stereospecifically a five-membered [60]fullerene adduct. These results suggest a biradical intermediate of the [2 + 2] photocycloaddition between dienes or arylalkenes and C60. An electron transfer between the triplet excited state of C60 and the unsaturated substrates precedes the formation of the intermediate.

Alkenes↗

PubMed2004

Multicomponent redox gradients on photoactive electrode surfaces.

Redox gradients have been used to tailor the arrangement of photoactive ITO-electrodes at the molecular level.

Journal Article↗

PubMed2003

Electrostatically arranged cytochrome c-fullerene photoelectrodes.

We have developed a molecular-level switch-a C(60)/cytochrome c modified ITO electrode-that reversibly transmits and processes solar energy.

Journal Article↗

PubMed2003

Electrostatic complexation and photoinduced electron transfer between Zn-cytochrome c and [olyanionic fullerene dendrimers.

Two dendritic fullerene (DF) monoadducts, 2 and 3, which can carry up to 9 and 18 negative charges, respectively, were examined with respect to electrostatic complexation with Cytochrome c (Cytc). To facilitate comprehensive photophysical investigations, the zinc analogue of Cytc (ZnCytc) was prepared according to a novel, modified procedure. The association of ZnCytc and DF, and consequential photoinduced electron transfer within ZnCytc-DF from the photoexcited protein to the fullerene, was proven by fluorescence spectroscopy and transient absorption spectroscopy. These findings were also supported by circular dichroism as well as by extensive molecular dynamics (MD) simulations.

Anions↗