Nanoparticles for Photodynamic Therapy Applications - Intracellular Delivery: Fundamentals and Applications - page 542

N

R

N N

N

N

R

N

R N Zn N

N

N

N

R = S or O

R

N

Fig. 34 Zinc phthalocyanine used by Nyokong

Fig. 35 Phthalocyanines
used by Britton et al.

NH 2

N N

N

H 2 N NH 2

M

N N

N

N N

NH 2

in the presence of QDs and energy transfer. The same team reported the chemically
linked QDs with zinc phthalocyanines (Britton et al. 2009 ) or with indium tet-
raamino phthalocyanines (Britton et al. 2010 ) (Fig. 35 ). In all these studies, no
in vitro results are given even if these systems seem to be good candidates for PDT.
Examples of organic and inorganic dyes for the preparation of QD-PS systems
are respectively Merocyanine 540 (Narayanan et al. 2008 ) (Fig. 18 ) and iridium
complexes (Hsieh et al. 2006 ) (Fig. 36 ). More recently, Rakovich et al. ( 2010 )