Understanding structure–properties relationships of porphyrin linked to graphene oxide through π–π-stacking or covalent amide bonds oleh Anna Lewandowska-Andralojc, Ewelina Gacka, Tomasz Pedzinski, Gotard Burdzinski, Aleksandra Lindner, Jessica M. O’Brien, Mathias O. Senge, Aleksandra Siklitskaya, Adam Kubas, Bronislaw Marciniak, Justyna Walkowiak-Kulikowska