His research has become one of the cornerstones of modern molecular spectroscopy. After joining the newly-founded National Research Council in 1946, his laboratory flourished. His numerous publications in the field of spectroscopy are used by many scientists and students. The result of his investigation into infrared and Raman spectroscopy is recognized as a powerful tool in researching molecular structure. In addition, he played an important role at the International Union of Pure and Applied Chemistry where he was elected president.