ABSTRACT
Nanomaterials continue to captivate and occupy the minds and labor of scientists and engineers across the globe. From a fundamental perspective, the ability to control catalytic or optoelectronic properties by tuning the composition, size, and morphology of low-dimensional materials is fascinating. This chapter discusses the inorganic, polymer, and composite nanostructured materials and their multimodal applications based on optoelectronic and optical properties. Various 1D conducting polymer nanomaterials with desired morphology and size can be controllably synthesized by using an efficient template methodology , or a template-free methodology. Invisible security inks are preferable to have minimal absorption in visible range, but provide fluorescent images readable only under special environments, such as excitation by ultraviolet light. 1D nanostructures, which include nanowires, nanofibers, nanoribbons, nanorods, and nanotubes among other morphologies, are recognized as one of the most promising material directions for energy-related applications.
