Interactions between tripodal porphyrin hosts and single walled carbon nanotubes: an experimental and theoretical (DFT) account - Pascu, S; Kuganathan, N; Tong, L; Jacobs, R; Barnard, P; Chu, B; Huh, Y; Tobias, G; Salzmann, C; Sanders, J; Green, M; Green, J (2008)