Nanoscale c2nr30432e PAPER 1 Anion-controlled morphologies and spectral features of cyanine-based nanoGUMBOS – an improved photosensitizer Atiya N. Jordan, Susmita Das, Noureen Siraj, Sergio L. de Rooy, Min Li, Bilal El-Zahab, Lin Chandler, Gary A. Baker and Isiah M. Warner * [PIC][NTf 2 ] and [PIC][BETI] nanoGUMBOS reveal tunable spectral properties in aqueous suspension as compared to [PIC] [I] in aqueous solution that are advantageous for application as photosensitizers. ART  C2NR30432E_GRABS 1 5 10 15 20 25 30 35 40 45 50 1 5 10 15 20 25 30 35 40 45 50