Richard Martin Willstätter FRS(For) HFRSE was a German organic chemist whose study of the structure of plant pigments, chlorophyll included, won him the 1915 Nobel Prize for Chemistry. The Nobel Prize in Chemistry 1915, announced November 11, 1915. Richard Willstätter, “for his researches on plant pigments, especially chlorophyll”. Richard Willstätter: born 1872, Karlsruhe, Germany. Wiki link Data: the Nobel Foundation (CC0).