The purpose of The Robert A. Welch Award in Chemistry is to foster and encourage basic chemical research and to recognize, in a substantial manner, the value of chemical research contributions for the benefit of humankind as set forth in the will of Robert Alonzo Welch. The founder was interested in chemistry and in its service to both the betterment and the understanding of human life. In accordance with these principles, the award committee will consider any person who has made important chemical research contributions that have had a significant, positive influence on humankind. We intend that the award recognizes the contributions of an individual who has not previously been recognized in a similar manner.