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Preparation and chiro-optical characterization of polyaniline doped with (+) or (-)-2-pyrrolidone-5-carboxylic acid (PCA).
MedLine Citation:
PMID:  21046639     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Optically active polyaniline (PANI) salts were readily generated in solution via the enantioselective acid doping of neutral emeraldine base (EB) form of PANI with either (+) or (-)-2-pyrrolidone-5-carboxylic acid (PCA) in dimethylsulfoxide (DMSO) and dimethylformamide (DMF) solvents. Strong mirror imaged circular dichroism (CD) spectra were obtained for the deep green polymer solutions obtained with (+) or (-) PCA, suggesting that the acid doping is enantioselective, with one helical screw of the polymer chain being preferentially produced depending on the nature of enantiomer. It was observed that molar concentration of PCA as well as nature of solvent plays a very important role in the generation of optically active PANI. The generated optically active PANI did not show any loss of optical activity up to 200 h. Chirality, 2010. © 2010 Wiley-Liss, Inc.
Authors:
Rama Dubey; Dhiraj Dutta; Trilok Chand Shami; Kandepudi Udaya Bhasker Rao
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-11-2
Journal Detail:
Title:  Chirality     Volume:  -     ISSN:  1520-636X     ISO Abbreviation:  -     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8914261     Medline TA:  Chirality     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Strategic Materials Group, Defence Materials and Stores Research and Development Establishment, DMSRDE P.O., Kanpur - 208013, India.
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