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Nobel Laureate in Chemistry, 1987 Jean-Marie Lehn was born in Rosheim, France, in 1939. He received his bachelor's degree in Organic Chemistry from the University of Strasbourg in 1960 after having originally enrolled as a philosophy student. He did research towards his doctorate at the CNRS for three years, earning his Ph.D. in 1963. The following year he worked in the laboratory of Robert Burns Woodward at Harvard, where he participated in the total synthesis of vitamin B12. On his return to Strasbourg he began to work in areas on the frontier between organic and physical chemistry, later taking an interest in biological processes as well. In 1968 he gained international recognition for the synthesis of cryptands, molecules that "capture" ions to create new chemical compounds. With this discovery, he began his work with "molecular recognition" (i.e. the way in which a receptor molecule recognizes and binds with a substrate), which is at the basis of fundamental biological processes. For this work Lehn received the Nobel Prize in Chemistry in 1987 (with Charles Pedersen and Donald J. Cram). Over the years his work has defined a new field of chemistry, which he has proposed calling "supramolecular chemistry" as it deals with complex entities formed by the association of two or more chemical species held together by intermolecular forces, whereas classical chemistry studies the bonds between the atoms within a molecule. This is a conceptual revolution in which the imagination of the chemist "forges the key that opens the door to a land of wonders". Since 1970 Lehn has been Professor of Chemistry at the Université Louis Pasteur in Strasbourg and since 1979 has also been Professor of molecular chemistry at the Collè ge de France in Paris. Author of more than 450 scientific publications, Lehn is a member of the world's most prestigious academies and institutions and has received numerous international honours and awards.

1994 Science, society and the natural/unnatural dualism 1996 Science, development and conservation