1990. Elias James Corey | 1991. Richard R. Ernst | 1992. Rudolph A. Marcus | 1993. Kary B. Mullis & Michael Smith | 1994. George A. Olah | 1995. Paul J. Crutzen, Mario J. Molina & F. Sherwood Rowland | 1996. Robert Curl, Sir Harold Kroto & Richard Smalley | 1997. Paul D. Boyer & John E. Walker & Jens C. Skou | 1998. Walter Kohn & John A. Pople | 1999. Ahmed H. Zewail