Next-Generation AUC Adds a Spectral Dimension : Development of Multiwavelength Detectors for the Analytical Ultracentrifuge

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2015
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Krause, Frank
Demeler, Borries
Schilling, Kristian
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Analytical ultracentrifugation / Cole, James L. (ed.). - Amsterdam [u.a.] : Academic Press [u.a.], 2015. - (Methods in enzymology ; 562). - pp. 1-26. - ISBN 978-0-12-802908-4
Abstract
We describe important advances in analytical ultracentrifugation (AUC) hardware, which add new information to the hydrodynamic information observed in traditional AUC instruments. In contrast to the Beckman-Coulter XLA UV/visible detector, multiwavelength (MWL) detection is able to collect sedimentation data not just for one wavelength, but for a large wavelength range in a single experiment. The additional dimension increases the data density by orders of magnitude, significantly improving the statistics of the measurement and adding important information to the experiment since an additional dimension of spectral characterization is now available to complement the hydrodynamic information. The new detector avoids tedious repeats of experiments at different wavelengths and opens up new avenues for the solution-based investigation of complex mixtures. In this chapter, we describe the capabilities, characteristics, and applications of the new detector design with biopolymers as the focus of study. We show data from two different MWL detectors and discuss strengths and weaknesses of differences in the hardware and different data acquisition modes. Also, difficulties with fiber optic applications in the UV are discussed. Data quality is compared across platforms.
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540 Chemistry
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Analytical ultracentrifugation; Multiwavelength detector; UV-vis absorbance; Optical detector development; Hydrodynamic analysis; Spectral analysis
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ISO 690PEARSON, Joseph, Frank KRAUSE, Dirk HAFFKE, Borries DEMELER, Kristian SCHILLING, Helmut CÖLFEN, 2015. Next-Generation AUC Adds a Spectral Dimension : Development of Multiwavelength Detectors for the Analytical Ultracentrifuge. In: COLE, James L., ed.. Analytical ultracentrifugation. Amsterdam [u.a.]:Academic Press [u.a.], pp. 1-26. ISBN 978-0-12-802908-4. Available under: doi: 10.1016/bs.mie.2015.06.033
BibTex
@incollection{Pearson2015NextG-32236,
  year={2015},
  doi={10.1016/bs.mie.2015.06.033},
  title={Next-Generation AUC Adds a Spectral Dimension : Development of Multiwavelength Detectors for the Analytical Ultracentrifuge},
  url={http://www.sciencedirect.com/science/article/pii/S0076687915003936},
  number={562},
  isbn={978-0-12-802908-4},
  publisher={Academic Press [u.a.]},
  address={Amsterdam [u.a.]},
  series={Methods in enzymology},
  booktitle={Analytical ultracentrifugation},
  pages={1--26},
  editor={Cole, James L.},
  author={Pearson, Joseph and Krause, Frank and Haffke, Dirk and Demeler, Borries and Schilling, Kristian and Cölfen, Helmut}
}
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