Aligned Polythiophene Micro- and Nanotubules

Fu, Mingxiao; Zhu, Yongfa; Tan, Ruiqin; Shi, Gaoquan

doi:10.1002/1521-4095(200112)13:24<1874::aid-adma1874>3.0.co;2-m

Cited by 125 publications

(72 citation statements)

References 6 publications

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“…However, several groups reported that the electrodeposition product consisted of only nanowires when using an AAO template with its pores blocked [14][15][16][17]. This is inconsistent with our experiment results.…”

Section: Resultscontrasting

confidence: 99%

Template-based synthesis and discontinuous hysteresis loops of cobalt nanotube arrays

Zhang

et al. 2013

J Mater Sci

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Co nanotubes were successfully prepared in the pores of anodic aluminium oxide templates using a DC electrodeposition method. The dependence of the product morphology on the applied potential was studied over the range -1.0 to -3.0 V. The results showed that the wall thickness of the nanotubes became thinner as the applied potential was reduced, and that there existed a critical potential (v c ) related to the electrodeposition parameters, below or above which the electrodeposition process is dominated by kinetics and thermodynamics, respectively. The formation of nanotubes is the result of kinetics dominating the electrodeposition process. Magnetic measurements showed that the hysteresis loops of the nanotubes were discontinuous. Theoretical analysis suggested the existence of some peculiar magnetization configuration such as a vertical Bloch line, which was responsible for the discontinuity of the hysteresis loops.

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Section: Resultscontrasting

confidence: 99%

Template-based synthesis and discontinuous hysteresis loops of cobalt nanotube arrays

Zhang

et al. 2013

J Mater Sci

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“…Then, a stainless steel sheet was used as current collector and contacted the gold layer of the membrane. The membrane together with the current collector was fixed between a Teflon ring and a Teflon plate and used as the working electrode [16]. The area of the membrane contacted to the electrolyte was ca.…”

Section: Methodsmentioning

confidence: 99%

Polypyrrole Microtubule Actuators for Seizing and Transferring Microparticles

Chen

et al. 2007

Adv Funct Materials

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Bilayer actuators consisting of a layer of aligned PPy microtubules with the length of 15 μm and a layer of compact PPy film with the thickness of 15 μm have been fabricated. The actuators can bend to an angle much larger than 90° at an actuation rate of ∼ 100° s–1 under a driving potential of 0.8 V versus Ag/AgCl. The microtubule layers of both type actuators are “sticky”, and can capture or trap polystyrene microparticles from their dilute dispersions. Moreover, the captured particles can be extensively released by sonication or partly released by electrochemically reducing the actuators in the aqueous electrolytes. On the basis of extensive investigations including controlling the conditions of electrochemical actuation and the redox states of PPy microtubules, adjusting the particle size and composition, possible mechanisms for capturing and releasing microparticles were proposed.

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“…After electropolymerization of polyacrylate films on the cathode, polypyrrole was synthesized by chronopotentiometry under a constant current of 0.5 mA/cm 2 in a dimethylformamide solution. Fu et al (2001) synthesized polythiophene nanowires on flexible gold film by electro-polymerization of thiophene in boron trifluoride diethyl etherate solution using an alumina membrane. The length and diameter of various conducting polymer nanowires synthesized using AAO templates can be controlled by polymerization time and current Park et al, 2005;Xiao et al, 2007).…”

Section: Hard Templatementioning

confidence: 99%

“…Figure 2 shows a SEM image of various conducting polymer nanowires using a hard template. (Joo et al, 2003) and (c) polythiophene nanowires on flexible substrate (Fu et al, 2001). TEM images of (d) polypyrrole/polyaniline copolymer nanowires (Li et al, 2002) and (e) polypyrrole-carbon nanotube composite nanowires (Wang et al, 2005).…”

Section: Hard Templatementioning

confidence: 99%