Nowadays, self-assembled nanocomposites and nanostructures are attracting considerable interest from environmental and energic fields, due to their chemical structures and components/functional groups. In view of various self-assembled nanostructured materials and composites (particles, films, gels, composites, etc.), the relative chemical reactions and modifications, as well as the application performance, are significantly different, covering topics such as new chemical reactions, organic semiconductors, photovoltaic technology, photocatalyst, biosensors, and energy materials for fuel cells and batteries.

However, the use of functionalized nanocomposites with controllable chemical reactions and modifications as important bottom-up approaches is still a great challenge. The chemical functionalization and self-assembly of nanocomposites and the subsequent environmental and energic applications of well-defined micro-/nanostructures have multiple important impacts. In this sense, research into sophisticated self-assembled nanocomposites with new chemical reactions or synthesis is helping to deepen our insight into nanomaterials.

In this Special Issue, we cordially invite investigators to contribute original research articles as well as review articles that will improve our understanding of the key scientific and technological problems in new chemical reactions and modifications, as well as relative environmental/energic applications of self-assembled nanocomposites and nanostructures.

Potential topics include but are not limited to the following:

• New chemical reactions/synthesis routes for inorganic-organic hybrid nanomaterials
• New chemical modifications/functions in self-assembled organic or inorganic-organic hybrid nanomaterials
• Synthesis, physical and chemical characterization of multidimensional nanocomposite materials (Langmuir–Blodgett (LB) films, hydrogels, electrospun films, vesicle and micelles, etc.) with smart chemical components
• Applications of chemically-modified photocatalytic nanomaterials in environmental purification, hydrogen production, and dye-sensitized solar cells
• Theoretical and experimental understanding of the relationship of chemical molecular structures and performance of related materials