tailieunhanh - Báo cáo hóa học: " Effect of Dopant on the Nanostructured Morphology of Poly (1-naphthylamine) Synthesized by Template Free Method"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Effect of Dopant on the Nanostructured Morphology of Poly (1-naphthylamine) Synthesized by Template Free Method | Nanoscale Res Lett 2008 3 45-48 DOI S11671-007-9112-2 NANO PERSPECTIVES Effect of Dopant on the Nanostructured Morphology of Poly 1-naphthylamine Synthesized by Template Free Method Ufana Riaz Sharif Ahmad S. Marghoob Ashraf Received 15 September 2007 Accepted 30 November 2007 Published online 7 December 2007 to the authors 2007 Abstract The study reports some preliminary investigations on the template free synthesis of a scantly investigated polyaniline PANI derivative poly 1-naphthylamine PNA by template free method in presence as well as absence of hydrochloric acid HCl dopant using ferric chloride as oxidant. The polymerization was carried out in alcoholic medium. Polymerization of 1-naphthylamine NPA was confirmed by the FT-IR as well as UV-visible studies. The morphology and size of PNA particles was strongly influenced by the presence and absence of acid which was confirmed by transmission electron microscopy TEM studies. Keywords Poly 1-naphthylamine Alcohol Transmission electron microscopy Morphology Nanostructure Introduction Scientific and technological interest in studying nanomaterials has spurred to develop conducting polymeric nanostructures using reliable and scalable synthetic methods to provide better performance of these materials in the established areas of corrosion sensors batteries and EMI shielding 1-4 . Chemical oxidative polymerization of aniline is the traditional method for preparing polyaniline in bulk 5 . In the aniline polymerization reaction an acidic solution is needed to enhance the head-to-tail coupling between aniline monomers. Typically a strong mineral acid U. Riaz S. Ahmad S. M. Ashraf H Materials Research Laboratory Department of Chemistry Jamia Millia Islamia New Delhi 110025 India e-mail smashraf_jmi@ such as hydrochloric sulphuric nitric perchloric or phosphoric acid is used at a high concentration M for the preparation of Polyaniline PANI 5 . It has been reported that the diameter of the nanofibres