1. Pseudopeptide-Based Hydrogels Trapping Methylene Blue and Eosin Y.
- Author
-
Milli L, Zanna N, Merlettini A, Di Giosia M, Calvaresi M, Focarete ML, and Tomasini C
- Subjects
- Adsorption, Hydrogen-Ion Concentration, Peptides metabolism, Rheology, Water Pollutants, Chemical, Coloring Agents chemistry, Eosine Yellowish-(YS) chemistry, Graphite chemistry, Hydrogels chemistry, Ions chemistry, Methylene Blue chemistry, Peptides chemistry, Thiazines chemistry
- Abstract
We present herein the preparation of four different hydrogels based on the pseudopeptide gelator Fmoc-l-Phe-d-Oxd-OH (Fmoc=fluorenylmethyloxycarbonyl), either by changing the gelator concentration or adding graphene oxide (GO) to the water solution. The hydrogels have been analysed by rheological studies that demonstrated that pure hydrogels are slightly stronger compared to GO-loaded hydrogels. Then the hydrogels efficiency to trap the cationic methylene blue (MB) and anionic eosin Y (EY) dyes has been analyzed. MB is efficiently trapped by both the pure hydrogel and the GO-loaded hydrogel through π-π interactions and electrostatic interactions. In contrast, the removal of the anionic EY is achieved in less satisfactory yields, due to the unfavourable electrostatic interactions between the dye, the gelator and GO., (© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
- Published
- 2016
- Full Text
- View/download PDF