Hybrid gels assembled from Fmoc-amino acid and graphene oxide with controllable properties.
A supramolecular gel is obtained from the self-assembly of an ultralow-molecular-weight gelator (N-fluorenyl-9-methoxycarbonyl glutamic acid) in good and poor solvents. The gelators can self-assemble into a lamellar structure, which can further form twisted fibers and nanotubes in the gel phase. Rheological studies show that the gels are robust and rigid, and are able to rapidly self-recover to a gel after being destroyed by shear force. Fluorescence experiments reveal the aggregation-induced emission effects of the gel system; the fluorescence intensity is significantly enhanced by gel formation. Graphene oxide (GO) is introduced into the system efficiently to give a hybrid material, and the interaction between gelators-GO sheets is studied. Rheological and fluorescent studies imply that the mechanical properties and the fluorescent emission of the hybrid materials can be fine-tuned by controlling the addition of GO.
School of Chemistry and Chemical Engineering and Key Laboratory of Colloids and Interfaces, Chemistry of Ministry of Education, Shandong University, Jinan 250100 (P.R. China), Fax: (+86) 531 88564464.
Pengyao
P
Xing
Xiaoxiao
X
Chu
Shangyang
S
Li
Mingfang
M
Ma
Aiyou
A
Hao
D000596:Amino Acids / Q000737:chemistry*; D005449:Fluorenes / Q000737:chemistry*; D005453:Fluorescence; D005782:Gels / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry; D010087:Oxides / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry
D000596:Amino Acids; D005449:Fluorenes; D005782:Gels; C016456:N(alpha)-fluorenylmethyloxycarbonylamino acids; D010087:Oxides; D012997:Solvents; D006108:Graphite
amino acids; fluorescence; graphene oxide; mechanical properties; supramolecular gels