-A A +A
We describe a new approach to attach organic dyes to graphene oxide (GO) sheets with high loading and minimal perturbation of the electronic and optical properties of the dye. The dye unit used (a pH-sensitive terthiophene) is grafted to GO using a new modular synthetic approach, passing through a C6-aminic linker which makes GO more soluble in different organic solvents and allows straightforward attachment at high yield not only of terthiophene but of many commercially available amino-reactive dyes. The covalent engraftment to GO does not perturb the absorption and emission properties of the dye, and in particular the pH sensing capability through amidic group reversible protonation. This approach can allow (i) high solubility of the GO intermediate in organic solvents, (ii) convenient coupling with commercial, stable amino-reactive dyes under mild conditions, (iii) easy control of the spacer length between …
Royal Society of Chemistry
Publication date: 
1 Jan 2012

Manuela Melucci, Margherita Durso, Massimo Zambianchi, Emanuele Treossi, Zhen-Yuan Xia, Ilse Manet, Giuliano Giambastiani, Luca Ortolani, Vittorio Morandi, Filippo De Angelis, Vincenzo Palermo

Biblio References: 
Volume: 22 Issue: 35 Pages: 18237-18243
Journal of Materials Chemistry