Importance of intramolecular electron spin relaxation in small molecule semiconductors - Schulz, L; Willis, M; Nuccio, L; Shusharov, P; Fratini, S; Pratt, FL; Gillin, WP; Kreouzis, T; Heeney, M; Stingelin, N; Stafford, CA; Beesley, DJ; et al. (PRB, 2011)