Max Delbrück (left) and Erwin SchrÖdinger were key researchers involved in the synthesis of molecular biology.  Both of these scientists were pioneers in the science of quantum physics, and were quick to recognize the linkage between the DNA molecule and interactions which occur between it's components at the sub-molecular level.
SchrÖdinger's 1944 book, What is life? The Physical Aspects of the Living cell, prompted many researchers to examine living processes at a more physical level.