Water-soluble pristine fullerenes C60 increase the specific conductivity and capacity of lipid model membrane and form the channels in cellular plasma membrane. - In: Journal of biomedical nanotechnology, ISSN 1550-7041, Bd. 8 (2012), 3, S. 522-527
Im Titel ist "60" tiefgestellt
The aim of the present work was the investigation of the interaction of water-soluble pristine fullerenes C-60 with bimolecular lipid model membrane (BLM) and cellular plasma membrane (PM). The findings demonstrate that the fullerenes C-60 at low concentrations, namely in the concentration range of 1.0 x 10(-4)-1.0 mg . ml(-1), are preferentially incorporated into the hydrophobic region of BLM, increasing, thus, its specific conductivity and specific capacity. Furthermore, upon interaction of fullerenes C-60 with PM, pores or other type of local defects are formed, which are wide enough in order to permit the passage of water molecules across the cell membrane resulting to the externalization of phosphatidylserine from the inner to the outer PM leaflet.
http://dx.doi.org/10.1166/jbn.2012.1404
Oxidation of dopamine on multi-walled carbon nanotubes. - In: Journal of solid state electrochemistry, ISSN 1433-0768, Bd. 16 (2012), 6, S. 2217-2226
Novel films consisting of multi-walled carbon nanotubes (MWCNTs) were fabricated by means of the chemical vapor deposition technique with decomposition of either acetonitrile (ACN) or benzene (BZ) in the presence of ferrocene (FeCp2) which served as catalyst. The electrochemical response of the two different kinds of MWCNT-based films, further referred to as MWCNT-ACN and MWCNT-BZ, towards the oxidation of dopamine (DA) to dopamine-o-quinone (DAQ) was tested by means of cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy. Both MWCNT-based films exhibit quasi-reversible response towards DA/DAQ with some slight kinetic differences; specifically, the charge-transfer process was found to be faster on MWCNT-ACN (k (s) = 35.3 × 10(-3) cm s(-1)) compared to MWCNT-BZ (k (s) = 6.55 × 10(-3) cm s(-1)). The detection limit of MWCNT-BZ for DA (0.30 mu M) appears to be poorer compared to that of MWCNT-ACN (0.03 mu M), but nevertheless, both MWCNT-based films exhibit greater detection ability compared to other electrodes reported in the literature. The sensitivities of MWCNT-ACN and MWCNT-BZ towards DA/DAQ were determined as 0.65 and 0.22 A M-1 cm(-2), respectively. The findings suggest that the fabricated MWCNT-based electrodes can be successfully applied for the detection of molecules with biological interest.
http://dx.doi.org/10.1007/s10008-012-1647-1
A ternary toxicity study using microfluid segment technique. - In: Toxicology letters, ISSN 1879-3169, Bd. 211 (2012), Suppl., S. S148
https://doi.org/10.1016/j.toxlet.2012.03.540
Microstructuring of multiwell plates for three-dimensional cell culture applications by ultrasonic embossing. - In: Biomedical microdevices, ISSN 1572-8781, Bd. 14 (2012), 2, S. 291-301
http://dx.doi.org/10.1007/s10544-011-9605-8
Nerve cell response to inhibitors recorded with an aluminum-galliumnitride/galliumnitride field-effect transistor. - In: Journal of neuroscience methods, ISSN 1872-678X, Bd. 206 (2012), 2, S. 195-199
https://doi.org/10.1016/j.jneumeth.2012.02.018
Local structure of ZnO micro flowers and nanoparticles obtained by micro-segmented flow synthesis. - In: ChemPhysChem, ISSN 1439-7641, Bd. 13 (2012), 6, S. 1557-1561
http://dx.doi.org/10.1002/cphc.201100960
Structure-electrical resistivity relationship of N-doped multi-walled carbon nanotubes. - In: Journal of materials science, ISSN 1573-4803, Bd. 47 (2012), 5, S. 2390-2395
Nitrogen-doped multi-walled carbon nanotubes (N-MWCNT) were synthesized by means of catalytic chemical vapor deposition technique using acetonitrile as carbon source material and ferrocene as catalyst. The structure of the synthesized N-MWCNT was characterized by means of microscopic (SEM, HRTEM) as well as spectroscopic (FTIR, Raman) techniques. Furthermore, the specific resistivity and the electrochemical properties of N-MWCNT were investigated and compared with those of pristine MWCNT. The results are discussed in terms of structural differences between pristine MWCNT and N-MWCNT.
http://dx.doi.org/10.1007/s10853-011-6059-6
Uncovering toxicological complexity by multi-dimensional screenings in microsegmented flow: modulation of antibiotic interference by nanoparticles. - In: Lab on a chip, ISSN 1473-0189, Bd. 12 (2012), 3, S. 474-484
https://doi.org/10.1039/C1LC20584F
https://doi.org/10.1515/ntrev
Realization of two-dimensional concentration spaces by micro segmented flow for microtoxicological screenings. - In: 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2010, (MicroTAS 2010), (2011), S. 1565-1567