A Review on the Influence of Applied Potential on Different Electrical Properties of Self-Assembled Monolayers (SAMs) of Alkanethiols on Gold (Au) Surface

Abstract

Self‐assembled monolayers (SAMs) of alkanethiols are commonly used in surface patterning, as well as in modifying the physical and chemical properties of surface. Therefore, the understanding of the formation of self‐assembled monolayers (SAMs), including its structure and different properties requires significant importance. Among a wide variety of organic molecules used for self‐assembly, alkanethiols and their derivatives on gold surface are the mostly studied. Because the alkanethiols based monolayers on gold layer prepared either using the flexible or rigid substrate are stable and possess well‐packed structure. Self‐assembled monolayers (SAMs) of alkanethiols on gold (Au) have many significant applications. Among them, the applications in the field of interfacial electron transfer, sensing, developing selected electrodes, and fabricating lipid bilayers on electrodes are remarkable. Hence, the intensive study of the different electrical properties of self‐assembled monolayers (SAMs) is noteworthy for the devices fabrication. This review work is to report on the influence of applied potential on different electrical properties of self‐assembled monolayers (SAMs) of alkanethiols on conductive gold (Au) surface. The work will essentially focus on different techniques of self‐assembling, discussion on the arrangement and structure, and the influence of applied potential on different electrical properties like SAM resistance, capacitance, impedance etc.