Raphael-Eduard-Liesegang-Prize (1.11.1869 - 13.11.1947)
Raphael-Eduard-Liesegang was a German chemist, who studied in Freiburg, but he did not finish his academic education. Although not successful at the university, he published already as student many scientific articles for instance about light sensitive organic silver salts. In this time, he also wrote a book on basic problems of the electric television. Liesegang started his career in the factory of his father, who produced articles for photographic applications. Liesegang invented new light sensitive papers and developing chemical compounds. In 1896 he discovered periodic precipitations in gels, and he observed ordered structures, which were later denoted as "Liesegang rings" (dissipative structures). After the death of his father, he sold a part of his factory which became one of the origins of the Agfa Company (BAYER AG). Within the next years, Liesegang worked in different academic positions, for instance in a museum, a hospital, a paper factory, an institute of biophysics and colloid chemistry. The extensive work of Raphael Liesegang published in more than 500 scientific articles, 13.000 short notices (letters) and he edited more than 50 books. In addition, he also wrote 14 dramas!
Nowadays, the German Colloid Society can offer the Raphael-Eduard-Liesegang-Prize to honor excellent, outstanding merits in the area of the pure or applied colloid science. The Raphael-Eduard-Liesegang-Prize is reserved for scientists of middle age, from approximately 40-55 years. The price consists of a document and a memorial-coin.
Laureates 1998 – 2007
1998 Helmuth Möhwald, Physiker, Berlin
1999 Heinz Rehage, Chemiker, Essen
2000 Imre Dékány, Chemiker, Szeged (Ungarn)
2001 Michal Borkovec, Chemiker, Genf (Schweiz)
2003 Walter Richtering, Chemiker, Aachen
2007 Monika Schönhoff, Physikerin, Münster
2009 Michael Gradzielski, Chemiker, Berlin







