Therefore, a static molecular structure is defined as stable only in a relative sense. If it is shorter than that, we cannot study the molecule. We are interested in understanding the nature of the chemical bonds or the molecular structure and stability and many other properties under various conditions. The structure and property of individual molecules will be the main topic of molecular science. The interaction and the collective behaviors of molecules will be another main topic.
Molecules interact each other.
Macromolecules will have primary, secondary, tertiary and other supramolecular structures. The nature of these molecular interactions and molecular structures will be revealed with the continued hard work of physicists, chemists and biologists and scientists from other related fields of studies. Physics, particularly quantum mechanics and statistical mechanics and possibly information theory can be used to guide our investigations. However, it is not true that now we already have some specific chemical theory which can resolve all or most of the outstanding problems in molecular sciences. Through his research career, he was not only a master of theory, but also in experiments and in the close combination of the two.