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  Determination of the nanostructure of polymer materials by electron paramagnetic resonance spectroscopy

Jeschke, G. (2002). Determination of the nanostructure of polymer materials by electron paramagnetic resonance spectroscopy. Macromolecular Rapid Communications, 23(4), 227-246.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-665E-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-665F-6
Genre: Journal Article

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 Creators:
Jeschke, Gunnar1, Author              
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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Free keywords: disorder; ESR/EPR; ionomers; nanoheterogeneity; supramolecular structures
 Abstract: Feature Article: Electron paramagnetic resonance (EPR) spectroscopy is one the few methods that can characterize structural features in the range between 0.5 and 5 nm in systems that lack long-range order. Approaches based on EPR spectroscopy provide good structural contrast even in complex materials, as the sites of interest can be selectively labeled or addressed by suitably functionalized spin probes using well established techniques. This article assesses the EPR experiments available for distance measurements on nanoscales in terms of the accessible distance range, precision, and sensitivity. Recommendations are derived for the proper choice of experiment for a given problem. Both simple and sophisticated methods for data analysis are described and their limitations are evaluated. It is discussed which assumptions must be made to extract a pair correlation function from EPR data. Finally, applications to the study of polymer chain conformation and the structure of ionically functionalized diblock copolymers are highlighted.

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Language(s): eng - English
 Dates: 2002-03-14
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28519
ISI: 000174577900001
Other: P-02-30
 Degree: -

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Title: Macromolecular Rapid Communications
  Alternative Title : Macromol. Rapid Commun.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 23 (4) Sequence Number: - Start / End Page: 227 - 246 Identifier: ISSN: 1022-1336