THE DEPARTMENT OF                                                            AT STATE UNIVERSITY OF NEW YORK,  POTSDAM N.Y.

                           CHEMISTRY

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Raman Imaging and Spectroscopy Lab

Chemical and Biological Applications of Raman Spectroscopy (pdf, 7 MB)

Atomic Force Microscopy Lab

AFM operation

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Nanotechnology Lab

 

Quartz Crystal Nanobalance Lab

EQCN Principles

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Studies

 

 

Electrochemical Quartz Crystal Nanobalance (EQCN) technique utilizes quartz vibrations and piezoelectric effect to measure mass changes as small as a fraction of a monolayer of atoms

 

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CHEMISTRY Dept.

Professor Maria Hepel

hepelmr@potsdam.edu

 

Research Interests

Department of Chemistry

Stowell Hall

44 Pierrepont Ave.

Potsdam , NY 13676, U.S.A.

Tel.: +1.315.267.2267

Fax: +1.315.267.3170

 

 

    Our research endeavor stems from fascination with novel phenomena and emerging technologies, as well as from the necessity of preserving the environment.

 

Current research projects involve:

  • DNA biosensors for stuies of DNA damage by reactive oxygen species (ROS) generated by the Fenton cascade induced by biomolecules in the presence of iron and copper ions.

  • DNA hybridization biosensors for the detection of gene mutation, with single base-pair sensitivity.

  • Development of Resonance Elastic Light Scattering (RELS) technique for studies of gold nanoparticle assembly induced by interparticle interactions.

  • Oligonucleotide-based molecular beacons for ultra-sensitive detection of glutathion, cysteine, homocysteine, and trace mercury analysis.

  • Studies of titanium dioxide nanotubes and mesoporous semiconductive materials for electrochromic devices, solar energy conversion, and for bimetallic catalysts supports in direct methanol fuel cells.

  • Quantum conductance with primary focus on novel phenomena of nanowires and monatomic metal nanobridges.

  • Nanotechnology of single molecule electronic devices

  • Biomarkers of oxidative stress for evaluation of vulnerability to autism

  • Effects of toxicants on DNA damage

  • Conformational transitions of proteins

  • Nanosensors and ultra-sensitive immunosensors for pesticides and herbicides

  • Biomolecular studies of Fluorescence Resonance Energy Transfer (FRET) between dye molecules and gold nanoparticles

  • Environmental studies of photoelectrocatalytic degradation of pollutants

  • Polypeptide nanochannel ion gates including glutathione, gramicidine, and others, and their interactions with metal ions

  • Electrochemical Quartz Crystal Nanobalance studies of supported bilayer lipid membranes and adsorbed protein films

 

RESEARCH GRANTS

 

   A total of $1,362,000 awarded for research studies from several funding agencies including: 

Nanoporous TiO2

for solar energy conversion and direct methanol fuel cells

 


Degradation of dye pollutants

Electron density surface

with  map of highest Occupied Molecular Orbitals (HOMO) for dye pollutant Remazol Blue Black.  Decomposition of pollutants studied by photo-electrocatalytic method using TiO2, WO3, and MoO3 semiconductor electrodes

Quantum Conductance Monatomic Nanobridge Devices

studied using conductanc spectroscopy and AFM/STM

 

 

 

Microelectrode Arrays

with glutathione modified surface used in studies of capacitive sensors for heavy metals

 

The AFM/STM laboratory has been funded by the NSF CCLI program, Award No. 0126402.

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