Biomedical subjects

Stefan Atalick

Publications and source records attributed to Stefan Atalick.

4 recordsLinked to original sources

PubMed2006

An algorithm for 3-D refractive index measurement in holographic confocal microscopy.

The principle of holographic confocal microscopy is introduced in this paper. An algorithm is presented to retrieve the phase information from the holograms and calculate the refractive index of the specimen from the phase. It is shown that this algorithm can be applied to a refractive index distribution in which the variation in x and z directions can be separated. The two examples used for the simulations are a linear gradient distribution and a circular distribution, which can be found in practical situations.

Journal Article↗

PubMed2004

Molecular satellite dishes: attaching parabolic and planar arenes to heterofullerenes.

The electrophilic attack of C(59)N(+) on arenes such as pyrene, coronene and corannulene leads to the regioselective formation of fullerene conjugates, in which polycyclic aromatics are connected to the spherical heterofullerene by a single sigma-bond.

Journal Article↗

PubMed2004

The first fullerene-heterofullerene dyad.

The highly regioselective attack of a C(60) malonate containing a terminal acetyl function to the heterofullerene cage C(59)N leads to the formation of the first fullerene-heterofullerene dyad, representing a new scaffold for directional energy transduction.

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.

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