Document Detail

Structure Dependence of Charged States in "Linear" Polyaniline as Studied by In Situ ATR-FTIR Spectroelectrochemistry.
MedLine Citation:
PMID:  22409155     Owner:  NLM     Status:  Publisher    
The electrochemical doping of emeraldine salt and emeraldine bases with different average molecular weights was studied by in situ Fourier transform infrared (FTIR) spectroelectro¬chemistry using attenuated total reflection (ATR) technique. The formation and stabilisation of charge carriers in polyaniline during p-doping was followed in dependence of the chain branching. The potential dependence of the IR bands during the oxidation of the polymer clearly demonstrates the formation of the different charged polymer structures (π-dimers, polarons and bipolarons). It is shown that IR bands usually attributed to a semiquinoid polaron lattice correspond in fact to doubly charged species, π-dimers, which are face-to-face complexes of two polarons. Bands corresponding exclusively to polarons have been identified at 1266, 1033 and 1010 cm-1 suggesting that polarons are predominantly stabilized on the linear segments near the polymer branches by phenazine.
Andrea Kellenberger; Evgenia Dmitrieva; Lothar Dunsch
Related Documents :
22725845 - Tm(7)tm'(6)b(8) (tm = ta, nb; tm' = ru, rh, ir): new compounds with [b(6)] ring polyani...
16838935 - A multireference coupled-cluster potential energy surface of diazomethane, ch(2)n(2).
21049965 - Atmospheric chemistry of i-butanol.
18714955 - Electronic structure, molecular interaction, and stability of the ch4-nh2o complex, for...
21581505 - Trans-n,n,n',n'-tetra-kis(carboxy-meth-yl)cyclo-hexane-1,2-diammonium tetra-chloridocad...
3547115 - 2,7-diamino-3,8-dimethylphenazine as the major mutagenic product from the reaction of 2...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-12
Journal Detail:
Title:  The journal of physical chemistry. B     Volume:  -     ISSN:  1520-5207     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101157530     Medline TA:  J Phys Chem B     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  The Larger Exercise Stroke Volume in Endurance Trained Men Does Not Result From Increased Left Ventr...
Next Document:  Assessment of antibiofilm activity of magnesium fluoride nanoparticles-stabilized oil-in-water nanos...