Karl M. Kadish, Kevin M. Smith, Roger Guilard - Google Books

https://books.google.de/books?id=B5NBkyNnJukC&pg=PA38#v=onepage

This is the third set of Handbook of Porphyrin Science.Porphyrins, phthalocyanines and their numerous analogues and derivatives are materials of tremendous importance in chemistry, materials science, physics, biology and medicine. They are the red color in…