Silicon quantum dots delivered phthalocyanine for fluorescence guided photodynamic therapy of tumor

Liu Jiao-Jiao¹, Chang Qi¹, Bao Mei-Mei¹, Yuan Bing^{1, ‡}, Yang Kai^{1, §}, Ma Yu-Qiang^{1, 2}

(color online) Characterizations of pure Si, (Si+Pc), and (Si*Pc) NPs. (a) Digital images of Si, (Si+Pc), (Si*Pc) NP dispersions and free Pc (in DMSO) in ambient light or under UV irradiation. (b) and (c) TEM and HR-TEM images of Si and (Si+Pc) NPs. (d)–(f) DLS, UV–vis absorption and fluorescence profiles of Si, (Si+Pc), and (Si*Pc) NP dispersions. The excitation wavelength in panel (f) is 365 nm.