 In 1935 , Franck moved to the United States , where he had accepted a professorship at Johns Hopkins University . The laboratory there was poorly equipped compared to the one in Göttingen , but he received $ 10 @,@ 000 for equipment from the Rockefeller Foundation . A more intractable problem was that the university had no money to hire skilled staff . Franck was concerned about his family members remaining in Germany , and needed money to help them emigrate . He therefore accepted an offer from the University of Chicago , where his work on photosynthesis had attracted interest , in 1938 . 
