A new, fully revised and updated edition of the successful postgraduate textbook, which covers the way in which molecular interactions influence observed morphologies in both small molecule and polymeric systems. This new edition includes additional chapters on nano molecular systems, self-assembly and molecular organisation. Existing chapters have also been expanded to include recent examples and new content including dynamics and liquid crystal organisation. This textbook is primarily aimed at polymer and material scientists, but would also be of interest to chemists and physicists studying the properties of organic molecules and materials.