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Hybrid Gels Assembled from Fmoc–Amino Acid and Graphene Oxide with Controllable Properties
Author(s) -
Xing Pengyao,
Chu Xiaoxiao,
Li Shangyang,
Ma Mingfang,
Hao Aiyou
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402018
Subject(s) - lamellar structure , graphene , fluorescence , rheology , supramolecular chemistry , oxide , materials science , chemical engineering , hybrid material , self assembly , phase (matter) , nanotechnology , polymer chemistry , chemistry , organic chemistry , molecule , composite material , physics , quantum mechanics , engineering , metallurgy
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.