Huang Jiaxing, Kaner Richard B
Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 90095-1569, USA.
Chem Commun (Camb). 2006 Jan 28(4):367-76. doi: 10.1039/b510956f. Epub 2005 Dec 7.
Polyaniline nanofibers are shown to form spontaneously during the chemical oxidative polymerization of aniline. The nanofibrillar morphology does not require any template or surfactant, and appears to be intrinsic to polyaniline synthesized in water. Two approaches--interfacial polymerization and rapidly-mixed reactions--have been developed to prepare pure nanofibers. The key is suppressing the secondary growth that leads to agglomerated particles. The effects of different dopant acids and solvents are discussed. Changing the dopant acid can be used to tune the diameters of the nanofibers between about 30 and 120 nm. Changing the organic solvent in interfacial polymerization reactions has little effect on the product. A brief discussion of the processibility of the nanofibers is presented. The possibility of creating nanofibrillar structures for selected polyaniline derivatives is also demonstrated.
聚苯胺纳米纤维在苯胺的化学氧化聚合过程中会自发形成。这种纳米纤维形态不需要任何模板或表面活性剂，似乎是在水中合成的聚苯胺所固有的。已经开发出两种方法——界面聚合和快速混合反应——来制备纯纳米纤维。关键在于抑制导致团聚颗粒的二次生长。讨论了不同掺杂酸和溶剂的影响。改变掺杂酸可用于将纳米纤维的直径调节在约30至120纳米之间。在界面聚合反应中改变有机溶剂对产物影响不大。对纳米纤维的可加工性进行了简要讨论。还展示了为选定的聚苯胺衍生物创建纳米纤维结构的可能性。
