Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, California, 90095-1569, USA.
Nano Lett. 2011 Mar 9;11(3):954-9. doi: 10.1021/nl103322b. Epub 2011 Feb 2.
An initiator is applied to synthesize single-walled carbon nanotube/polyaniline composite nanofibers for use as high-performance chemosensors. The composite nanofibers possess widely tunable conductivities (10(-4) to 10(2) S/cm) with up to 5.0 wt % single-walled carbon nanotube (SWCNT) loadings. Chemosensors fabricated from the composite nanofibers synthesized with a 1.0 wt % SWCNT loading respond much more rapidly to low concentrations (100 ppb) of HCl and NH(3) vapors compared to polyaniline nanofibers alone (120 s vs 1000 s). These nanofibrillar SWCNT/polyaniline composite nanostructures are promising materials for use as low-cost disposable sensors and as electrodes due to their widely tunable conductivities.
一种引发剂被应用于合成单壁碳纳米管/聚苯胺复合纳米纤维，用作高性能化学传感器。该复合纳米纤维具有广泛可调的电导率（10(-4) 至 10(2) S/cm），最高可达 5.0 wt%的单壁碳纳米管（SWCNT）负载量。由负载量为 1.0 wt%的 SWCNT 的复合纳米纤维合成的化学传感器对低浓度（100 ppb）的 HCl 和 NH(3)蒸汽的响应速度比单独的聚苯胺纳米纤维快得多（120 s 对 1000 s）。这些纳米纤维状的 SWCNT/聚苯胺复合纳米结构由于其可调的电导率，有望用作低成本的一次性传感器和电极。
