Functional self-assemblies with nanoscale ordering for molecular electronics and biomaterials

摘要

Self-assembled monolayers (SAMs) of alkanethiols on Au(1,1,1) surface are extensively investigated in terms of the specific structural features on a molecular level, the effect of changes on the molecular backbone and the end group on the SAM structure, and the structural phase diagram as a function of temperature and coverage. Recently, more complex structures such as multi-component SAMs, laterally structured SAMs, surface reactions and heterostructures have attracted a lot of attention due to their pattern features and functional properties. In particular, heterostructures combining SAMs as building templates with polymers, biomolecules, inorganic crystals and nanoparticles, and π-conjugated molecules have provided many potential applications in "brush-like" coating, biosensing, electronics and photonics. However, it is highly desirable to achieve heterostructured SAMs with high stability and nanoscale features in order to study the mechanisms for molecular electronics, organic/polymer photovoltaics and molecular recognition. In this paper, the development of heterostructured self-assemblies with nanoscale ordering is highlighted for molecular electronics and biomaterials applications.