A chemistry approach to nanomaterials is presented through the eye of chemistry. The goal is to provide a leading-edge description of the emerging and exciting field of nanochemistry. The content of the course has been selected and organized to establish the basic principles of nanoscience through the subject of nanochemistry. Because of the interdisciplinary non-mathematical approach adopted in teaching this course the lecture material should be useful to a broad student interest group. To amplify, nanoscience today involves bottom-up chemistry and top-down engineering physics techniques or a creative amalgamation of both. We are currently witnessing an explosion of novel ideas and strategies for making and manipulating, visualizing and interrogating nanoscale materials and structures. An aim of this course is to describe the concepts and methods, developed mainly by chemists, for synthesizing a range of nanoscale building blocks with strictly controlled size, shape and surface functionality, structure, composition and properties. A further aim is to explain how these nanoscale construction units can be organized and integrated into functional architectures, both simple and complex, using a combination of self-assembly and directed self-assembly using chemical lithography and template based methods. Nanochemistry will be a valuable course for students planning an academic or industrial research career in any area related to nanoscience and nanotechnology. It provides a global perspective of the subject of nanochemistry, written with sufficient breadth and depth to make it suitable as the basis of a final year undergraduate course or a graduate course for students in chemistry and physics, materials science and engineering, biology, and medicine. This course will provide a readily accessible road map of nanochemistry, beginning with its roots and extending to its branches, emphasizing throughout the connection of ideas from discovery to application, from within and between the science disciplines. It provides a unique perspective through chemistry, which will make it invaluable for those witnessing, participating in, and trying to remain at the forefront of the nanoscience and nanotechnology explosion. The course material is designed to get students excited and thinking about nanochemistry, and what they can do with it.