Codrina V. Popescu  portrait

Codrina V. Popescu

Professor
Office
OWS 460
Phone
(651)962-5578

Keywords: bioinorganic, Mössbauer studies, iron enzyme, hydrogenase, iron-sulfur cluster, dinitrogen activation, iron nitrosyl complex, biomimetic iron, chemistry of life processes

Professional Interests

In our research, we seek to solve problems pertaining to the chemistry of some life processes involving iron, such as hydrogen generation, biological oxidation, nitrogen binding and fixation. We study aspects of the mechanism, structures of the intermediates and model complexes. The bulk of our experimental work involves Mössbauer and EPR spectroscopy. Our Mössbauer spectroscopy laboratory was established in 2004 with funds from an NSF-MRI grant (Popescu, 2004-07).  

Some of our current interdisciplinary projects are listed below.  Funding from NSF (NSF-RUI 2010-13, and 2013-2017). All our projects are pursued solely with undergraduate students from primarily undergraduate institutions (Ursinus College, Colgate and University and University of St. Thomas).  Other exciting projects are in various degrees of planning or accomplishment. For the latter, see our publications.

  • The study of novel complexes that aim to model the active site of hydrogenase enzymes.
  • Characterization of novel Fe(I) and other unusual bio-inspired complexes.
  • Studies of iron complexes exhibiting spin transitions.
  • Studies of the dual-function enzyme dehaloperoxidase (DHP) from Amphitrite ornata.
  • Studies of model complexes of Fe(III)-radical model complexes for aminophenol oxidases.

These projects combine spectroscopic characterization of iron bio-inspired complexes with the analysis of enzyme active sites, calculations and biochemical characterization of enzymes, such as DHP. These collaborative projects involve world-class scientists, both synthetic chemists and biochemists, from Texas A&M, Marquette University, University of Delaware, North Carolina State University (Raleigh) and the Pacific Northwest National Laboratory. For details, please follow the links on the right.

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Spring 2018 Courses

Spring 2018 Courses
Course - Section Title Days Time Location
CHEM 320 - 01 Instrumental Analysis - T - R - - - 0955 - 1135 OWS 474

Days of Week:

- T - R - - -

Time of Day:

0955 - 1135

Location:

OWS 474

Course Registration Number:

21106 (View in ClassFinder)

Credit Hours:

4 Credit Hours

Instructor:

Victoria C. Ewbank-Popescu

Principles and techniques of operation of modern chemical instrumentation not covered in CHEM 300. Topics include the capabilities, limitations and data interpretation of advanced optical spectroscopies (luminescence, Raman, etc.), voltammetry, potentiometry, differential scanning calorimetry, thermal gravimetric analysis and mass spectrometry. Fundamentals of signal processing, basic circuitry and optical components are also included. The laboratory consists of both structured exercises and a student designed project and report based on an industrial problem or on an analysis problem of interest to the student. Lecture plus four hours of lab each week. Offered spring semester. Prerequisites: CHEM 202, 300

Schedule Details

Location Time Day(s)
CHEM 320 - 51 Instrumental Analysis (lab) - - W - - - - 1335 - 1735 OWS 477

Days of Week:

- - W - - - -

Time of Day:

1335 - 1735

Location:

OWS 477

Course Registration Number:

21107 (View in ClassFinder)

Credit Hours:

0 Credit Hours

Instructor:

Victoria C. Ewbank-Popescu

Principles and techniques of operation of modern chemical instrumentation not covered in CHEM 300. Topics include the capabilities, limitations and data interpretation of advanced optical spectroscopies (luminescence, Raman, etc.), voltammetry, potentiometry, differential scanning calorimetry, thermal gravimetric analysis and mass spectrometry. Fundamentals of signal processing, basic circuitry and optical components are also included. The laboratory consists of both structured exercises and a student designed project and report based on an industrial problem or on an analysis problem of interest to the student. Lecture plus four hours of lab each week. Offered spring semester. Prerequisites: CHEM 202, 300

Schedule Details

Location Time Day(s)

Summer 2018 Courses

Summer 2018 Courses
Course - Section Title Days Time Location

Fall 2018 Courses

Fall 2018 Courses
Course - Section Title Days Time Location
CHEM 300 - 01 Quantitative Analysis - T - R - - - 0955 - 1135 OWS 469

Days of Week:

- T - R - - -

Time of Day:

0955 - 1135

Location:

OWS 469

Course Registration Number:

40093 (View in ClassFinder)

Credit Hours:

4 Credit Hours

Instructor:

Victoria C. Ewbank-Popescu

An introduction to quantitative chemical analysis. Topics include sample treatment, the statistical handling of data, equilibria governing acid/base chemistry and complex formation, and fundamentals underlying measurements using the following techniques: titrimetry (using acid/base, complexation and redox reactions), spectrophotometry (atomic absorption and emission spectroscopy and molecular absorption spectroscopy), and analytical separations (GC, HPLC, and capillary electrophoresis). Lecture plus four laboratory hours per week. Offered fall and spring semesters. Prerequisite: A minimum grade of C- in CHEM 112 or 115

Schedule Details

Location Time Day(s)
CHEM 300 - 51 Quantitative Analysis (Lab) - - W - - - - 1335 - 1735 OWS 474

Days of Week:

- - W - - - -

Time of Day:

1335 - 1735

Location:

OWS 474

Course Registration Number:

42499 (View in ClassFinder)

Credit Hours:

0 Credit Hours

Instructor:

Victoria C. Ewbank-Popescu

An introduction to quantitative chemical analysis. Topics include sample treatment, the statistical handling of data, equilibria governing acid/base chemistry and complex formation, and fundamentals underlying measurements using the following techniques: titrimetry (using acid/base, complexation and redox reactions), spectrophotometry (atomic absorption and emission spectroscopy and molecular absorption spectroscopy), and analytical separations (GC, HPLC, and capillary electrophoresis). Lecture plus four laboratory hours per week. Offered fall and spring semesters. Prerequisite: A minimum grade of C- in CHEM 112 or 115

Schedule Details

Location Time Day(s)