A Bimodal Fluorescent and Photocytotoxic Naphthalene Diimide for Theranostic Applications Erica Salvati, c Filippo Doria, a Francesco Manoli, b Carmen D'Angelo, c Annamaria Biroccio, c Mauro Freccero* a and Ilse Manet,* b a Dipartimento di Chimica, Università di Pavia. V.le Taramelli 10, 27100 Pavia, Italy. b Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, via Gobetti 101, 40129 Bologna, Italy c Oncogenomic and Epigenetic Unit, Regina Elena National Cancer Institute, Via Elio Chianesi, 53 Rome, Italy Supplementary Information Electronic Supplementary Material (ESI) for Organic & Biomolecular Chemistry. This journal is © The Royal Society of Chemistry 2016