title: Facile synthesis of polyaniline "sunflowers" with arrays of oriented nanorods.
abstract: Polyaniline (PANI) "sunflowers" made of arrays of oriented nanorods were synthesized by chemical oxidative polymerization of aniline in the presence of cetyltrimethylammonium bromide (CTAB) and suitable concentration of HNO3 at about 0 degrees C (ice bath). The reaction conditions, such as the concentration of reagents and reaction temperature were systematically investigated and controlled on the preparation of PANI "sunflowers". The results also suggest that HNO3 probably plays a key role in forming PANI "sunflowers". A possible forming mechanism of the PANI nanostructures is offered.
authors.affiliation: College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China.
authors.forename: Taoqing
authors.initials: T
authors.lastname: Wang
authors.forename: Wenbin
authors.initials: W
authors.lastname: Zhong
authors.forename: Xutao
authors.initials: X
authors.lastname: Ning
authors.forename: Yongxin
authors.initials: Y
authors.lastname: Wang
authors.forename: Wantai
authors.initials: W
authors.lastname: Yang
mesh_terms: D000814:Aniline Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000191:economics / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry / Q000648:ultrastructure; D017942:Nitric Acid / Q000138:chemical synthesis / Q000737:chemistry*; D010084:Oxidation-Reduction; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D000814:Aniline Compounds; D002593:Cetrimonium Compounds; C416807:polyaniline; D017942:Nitric Acid; D000077286:Cetrimonium