After 1933, Gerhard Herzberg's teaching licence was withdrawn. Because he refused to divorce his wife, his project position at the TH was not extended in 1935. In August of the same year, the couple emigrated to Saskatoon, Canada, where Gerhard Herzberg obtained a professorship. From 1945, he worked in Chicago, after 1948, in Ottawa. In 1971, he won the Nobel Prize in Chemistry for his work on the electronic structure of molecules, in particular of free radicals. He died on 3.3.1999 in Ottawa.