Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/2163
Title: Study of the thermal elimination process of sulphinyl-based PPV precursors by solid state NMR
Authors: ADRIAENSENS, Peter 
ROEX, Hilde 
VANDERZANDE, Dirk 
GELAN, Jan 
Issue Date: 2005
Publisher: ELSEVIER SCI LTD
Source: POLYMER, 46(6). p. 1759-1765
Abstract: A sensitive protocol to judge the completeness of the elimination reaction for soluble and insoluble conjugated polymers prepared via precursor routes is presented based on UV/vis and H-1 wideline NMR relaxometry in the solid state. Especially the proton spin-lattice decay time in the rotating frame, T-1pH, has proven to be suitable for an accurate determination of the completeness of the elimination reaction. Especially for long side-chain substituted PPV derivatives, UV/vis seems to be limited due to thermochromic effects. Furthermore, it is shown by solid state 2 H wideline NMR spectroscopy that incomplete elimination results in an enhanced polymer backbone chain mobility. Both the completeness of elimination and insight into the molecular dynamics can be of significant importance toward the performance of photovoltaic devices. (C) 2004 Elsevier Ltd. All rights reserved.
Notes: Limburgs Univ Ctr, Div Chem, IMO, B-3590 Diepenbeek, Belgium.Adriaensens, P, Limburgs Univ Ctr, Div Chem, IMO, Univ Campus,Bldg D, B-3590 Diepenbeek, Belgium.peter.adriaensens@luc.ac.be jan.gelan@luc.ac.be
Keywords: conjugated polymers; NMR relaxometry; thermal elimination
Document URI: http://hdl.handle.net/1942/2163
ISSN: 0032-3861
e-ISSN: 1873-2291
DOI: 10.1016/j.polymer.2004.12.029
ISI #: 000227246200006
Category: A1
Type: Journal Contribution
Validations: ecoom 2006
Appears in Collections:Research publications

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