摘要
利用一种新型的导电聚合物——聚3,4-二氧化乙烷噻吩(PEDOT)的衍生物PEDTM,成功地在用微加工技术制作的神经元修补元件的电极上制得了导电涂层。该导电聚合物既克服了聚吡咯由于α—β(β?键接而产生的缺陷, 又克服了EDOT在水中溶解度小,无法在生物分子的掺杂下电化学合成PEDOT/生物分子导电涂层的缺陷。SEM和AFM照片表明PEDTM/PSS导电涂层具有粗糙的表面形貌,表面积增加,其阻抗也比未涂层前降低很多,在1 kHz处其阻抗值降低了两个数量级。研究结果表明,PEDTM/生物分子导电涂层的阻抗比聚吡咯/生物分子涂层降低得更多。
PEDTM, a derivative of poly3, 4-ethylenedioxythiophene, was found a novel conducting polymer. PEDTM was electrochemically deposited onto the surface of micromachined neural prosthetic device. PEDTM has neither the undesiredα—coupling that is often found in polypyrrole, nor the aqueous solubility as low as that of EDOT. Thus, the film of PEDTM/biomolecules was successfully obtained. SEM and AFM images indicated that the coatings had rough surface morphology. It provided an intimate contact with neural cells. Impedance spectroscope indicated that the impedance of the conducting polymer coating was lower than that of the bare gold electrodes.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2003年第8期18-19,22,共3页
Electronic Components And Materials
关键词
导电聚合物
神经元修补元件
表面改性
conducting polymer
neural prosthetic devices
surface modification