Nanochemistry is a new discipline concerned with the unique properties associated with assemblies of atoms or molecules on a scale between that of the individual building blocks and the bulk material. At this level, quantum effects can be significant, and also innovative ways of carrying out chemical reactions become possible.

It is the science of tools, technologies, and methodologies for chemical synthesis, analysis, and biochemical diagnostics, performed in nanolitre to femtolitre domains.

Nanochemistry is the use of synthetic chemistry to make nanoscale building blocks of desired shape, size, composition and surface structure, charge and functionality with an optional target to control self-assembly of these building blocks at various scale-lengths.

Nanochemistry use semi-conductors that only conduct electricity in specific conditions. As the semi-conductors are much smaller than normal conductors the product can be much smaller. A.vijayakumar