Encapsulation of cadmium selenide nanocrystals in biocompatible nanotubes: DFT calculations, X-ray diffraction investigations, and confocal fluorescence imaging von Calatayud, D, Ge, H, Kuganathan, N, Mirabello, V, Jacobs, R, Rees, N, Stoppiello, C, Khlobystov, A, Tyrrell, R, Como, E, Pascu, S