Due to their size and shape-dependent optical, electrical, magnetic, and catalytic properties, colloidal nanocrystals have been the promising building blocks for functional materials and devices, such as light emitting diodes, solar cells, telecommunication amplifiers, and biomedical fluorescent labels. Although the strategies of colloidal nanocrystals have attracted a special attention because of their fundamental role in their properties and applications, it was inevitable to use expensive, toxic, and env...