I have a nanohybrids of quantum dots core/shell/shell CdTe/CdS/ZnS coated with GSH and functionalized with phthalocyanines; Zn monocarboxyphenoxy phthalocyanine (1)  and  Zn tetracarboxyphenoxy phthalocyanine (2).

In both cases, this effect occurs. 

Similar questions and discussions