We report a new strategy for controlled electrodeposition of ultralong (maximum length ~170 μm) TTFBr nanowires with large aspect ratios (&gt; 100) for gas sensing. Our strategy is based on the geometric effects of microelectrodes on the growth of nanowires. The steady-state radial diffusion of TTF to the microelectrode results in the one-dimensional growth of the TTFBr nanowires at a constant growth rate. Moreover, we prepared and tested the devices prepared from single TTFBr nanowires, and found they exhibited high sensitivity toward ammonia gas.

Controlled electrodeposition of tetrathiafulvalene bromide (TTFBr) nanowires for gas sensing

256th National Meeting (2018)

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