%0 Journal Article %T A Direct Mechanism of Ultrafast Intramolecular Singlet Fission in Pentacene Dimers %A Andrew B. Pun %A Elango Kumarasamy %A Eric G. Fuemmeler %A Kiyoshi Miyata %A Luis M. Campos %A Michael L. Steigerwald %A Nandini Ananth %A Samuel N. Sanders %A Tao Zeng %A X.-Y. Zhu %J Archive of "ACS Central Science". %D 2016 %R 10.1021/acscentsci.6b00063 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4882733/