Cobalt(II) complexes of terpyridine bases as photochemotherapeutic agents showing cellular uptake and photocytotoxicity in visible light Sovan Roy, a Subhendu Roy, a Sounik Saha, a Ritankar Majumdar, b Rajan R. Dighe, b Eluvathingal D. Jemmis,* a,c and Akhil R. Chakravarty* a a Department of Inorganic and Physical Chemistry, b Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore 560012, India. c Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram-695016, India. Supporting information Electronic Supplementary Information for Dalton Transactions This journal is © The Royal Society of Chemistry 2011