通过“自下而上”的合理设计将有机半导体组织成 3D DNA 阵列。
An Organic Semiconductor Organized into 3D DNA Arrays by "Bottom-up" Rational Design.
机构信息
Department of Chemistry, New York University, New York, NY, 10003, USA.
Department of Chemistry, Purdue University, West Lafayette, IN, 47907, USA.
出版信息
Angew Chem Int Ed Engl. 2017 Jun 1;56(23):6445-6448. doi: 10.1002/anie.201700462. Epub 2017 May 3.
A 3D array of organic semiconductors was assembled using a DNA scaffold. An octameric aniline molecule ("octaniline") was incorporated into a DNA building block based on a dimeric tensegrity triangle. The construct self-assembled to form a 3D crystal. Reversible redox conversion between the pernigraniline and leucoemeraldine states of the octaniline is retained in the crystal. Protonic doping gave emeraldine salt at pH 5, corresponding to the conductive form of polyaniline. Redox cycling within the crystal was visualized by color changes and Raman microscopy. The ease of conversion between the octaniline states suggests that it is a viable electronic switch within a unique 3D structure.
使用 DNA 支架组装了有机半导体的 3D 阵列。将八聚体苯胺分子（“八苯胺”）掺入基于二聚体张拉整体三角形的 DNA 构建基块中。该结构自组装形成 3D 晶体。八苯胺的永芳基和白亚胺态之间的可逆氧化还原转换在晶体中得以保留。在 pH 值为 5 时，质子掺杂产生了 emeraldine salt，对应于聚苯胺的导电形式。通过颜色变化和拉曼显微镜观察到晶体内部的氧化还原循环。八苯胺状态之间的转换容易程度表明，它是独特 3D 结构内的可行电子开关。
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