Mitschang Fabian, Langner Markus, Vieker Henning, Beyer André, Greiner Andreas
Chair or Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces, University of Bayreuth, Universitätsstraße 30, 95440, Bayreuth, Germany.
Macromol Rapid Commun. 2015 Feb;36(3):304-10. doi: 10.1002/marc.201400485. Epub 2014 Dec 8.
Continuous conductive gold nanofibers are prepared via the "tubes by fiber templates" process. First, poly(l-lactide) (PLLA)-stabilized gold nanoparticles (AuNP) with over 60 wt% gold are synthesized and characterized, including gel permeation chromatography coupled with a diode array detector. Subsequent electrospinning of these AuNP with template PLLA results in composite nanofibers featuring a high gold content of 57 wt%. Highly homogeneous gold nanowires are obtained after chemical vapor deposition of 345 nm of poly(p-xylylene) (PPX) onto the composite fibers followed by pyrolysis of the polymers at 1050 °C. The corresponding heat-induced transition from continuous gold-loaded polymer tubes to smooth gold nanofibers is studied by transmission electron microscopy and helium ion microscopy using both secondary electrons and Rutherford backscattered ions.
通过“纤维模板法制备管”工艺制备连续导电金纳米纤维。首先，合成并表征了金含量超过60 wt%的聚（L-丙交酯）（PLLA）稳定的金纳米颗粒（AuNP），包括与二极管阵列检测器联用的凝胶渗透色谱法。随后，将这些AuNP与模板PLLA进行静电纺丝，得到金含量高达57 wt%的复合纳米纤维。在复合纤维上化学气相沉积345 nm的聚对二甲苯（PPX），然后在1050°C下热解聚合物，得到高度均匀的金纳米线。利用透射电子显微镜和氦离子显微镜，通过二次电子和卢瑟福背散射离子研究了相应的热诱导从连续载金聚合物管到光滑金纳米纤维的转变。
