Searching the Hearts of Graphene-like Molecules for Simplicity, Sensitivity, and Logic

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• 作者：Sara Sangtarash ; Cancan Huang ; Hatef Sadeghi ; Gleb Sorohhov ; J眉rg Hauser ; Thomas Wandlowski ; Wenjing Hong ; Silvio Decurtins ; Shi-Xia Liu ; Colin J. Lambert
• 刊名：Journal of the American Chemical Society
• 出版年：2015
• 出版时间：September 9, 2015
• 年：2015
• 卷：137
• 期：35
• 页码：11425-11431
• 全文大小：465K
• ISSN：1520-5126

文摘

If quantum interference patterns in the hearts of polycyclic aromatic hydrocarbons could be isolated and manipulated, then a significant step toward realizing the potential of single-molecule electronics would be achieved. Here we demonstrate experimentally and theoretically that a simple, parameter-free, analytic theory of interference patterns evaluated at the mid-point of the HOMO鈥揕UMO gap (referred to as M-functions) correctly predicts conductance ratios of molecules with pyrene, naphthalene, anthracene, anthanthrene, or azulene hearts. M-functions provide new design strategies for identifying molecules with phase-coherent logic functions and enhancing the sensitivity of molecular-scale interferometers.