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Opportunity at National Institute of Standards and Technology (NIST)

Macromolecular Separation Science

Location

Material Measurement Laboratory, Chemical Sciences Division

RO# Location
50.64.61.B8006 Gaithersburg, MD

Please note: This Agency only participates in the February and August reviews.

Advisers

Name E-mail Phone
Striegel, Andre Michael andre.striegel@nist.gov 301.975.3159

Description

Research focuses on the development and application of multi-detector, multi-dimensional macromolecular separation science techniques. Topics include (1) designing macromolecular two-dimensional liquid chromatography (2D-LC) separations to characterize the physicochemical phase space inhabited by complex polymers, blends, and novel materials; (2) physicochemical characterization of nanoparticles by SEC, HDC, AF4, H5F separations coupled to e.g., MALS, QELS, ICP-MS, etc.; (3) non-empirical, first-principles-based development of novel "interactive" macromolecular LC methods; (4) quantitative determination of structural influences on solution flexibility of small sugars (mono-, di-, and oligosaccharides); (5) physicochemical characterization of polyelectrolytes; (6) determining structural and related influences on transient elongational flow-induced polymer degradation; and (7) thermodynamics of dilute polymer solutions. Reseach will emphasize applications to macromolecular, analytical, carbohydrate, and nanoparticle disciplines.

 

References

Pitkänen L, Montoro Bustos AR, Murphy KE, Winchester MR, Striegel AM: Quantitative characterization of gold nanoparticles by size-exclusion and hydrodynamic chromatography, coupled to inductively coupled plasma mass spectrometry and quasi-elastic light scattering. Journal of Chromatography A 1511: 59-67, 2017

Rowland SM, Striegel AM: The characterization of copolymers and blends by quintuple-detector size-exclusion chromatography. Analytical Chemistry 84: 4812-4820, 2012

 

Keywords:
Separation science; Multiple detection; Multi-dimensional; Macromolecules; Polymers, Carbohydrates; Nanoparticles; Polysaccharides; Liquid chromatography;

Eligibility

Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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