The central goal of synthetic chemistry of colloidal nanocrystals at present is to discover functional materials.
Such functional materials should help mankind to meet the tough challenges brought by the rapid depletion
of natural resources and the signiﬁ cant increase of population with higher and higher living standards. With
this thought in mind, this essay discusses the basic guidelines for developing this new branch of synthetic
chemistry, including rational synthetic strategies, functional performance, and green chemistry principles.