Masuda Yoshitake, Ohji Tatsuki, Kato Kazumi
J Nanosci Nanotechnol. 2014 Mar;14(3):2252-7. doi: 10.1166/jnn.2014.8478.
Tin oxide nanostructures were fabricated using a water bath technique. The structures were modified with dye-labeled DNAs for a molecular sensor. Sensing mechanism of the sensor was based on a photoelectric conversion effect. Photoluminescence intensities from the tin oxide nanostructures reached to 16 times larger than that from SnO2:F films. High photocurrent of 5.5 x 10(-6) A and high signal-to-noise ratio of 29 were achieved in this system. Photoelectric conversion on a combination of the dye-labeled DNA and the tin oxide was an essence of the sensing system. Surface nanospaces were effectively utilized to increase photoluminescence and photocurrent.
采用水浴技术制备了氧化锡纳米结构。用染料标记的DNA对这些结构进行修饰以制成分子传感器。该传感器的传感机制基于光电转换效应。氧化锡纳米结构的光致发光强度比SnO2:F薄膜的光致发光强度大16倍。该系统实现了5.5×10(-6) A的高光电流和29的高信噪比。染料标记的DNA与氧化锡组合的光电转换是传感系统的关键。表面纳米空间被有效地利用来增强光致发光和光电流。
