Authors: Albert C Fahrenbach; Jonathan C Barnes; Hao Li; Diego Benítez; Ashish N Basuray; Lei Fang; Chi-Hau Sue; Gokhan Barin; Sanjeev K Dey; William A Goddard; J Fraser Stoddart Journal: Proc Natl Acad Sci U S A Date: 2011-11-30 Impact factor: 11.205