title: Two-photon-responsive supramolecular hydrogel for controlling materials motion in micrometer space.
abstract: Spatiotemporal control of fluidity inside a soft matrix by external stimuli allows real-time manipulation of nano/micromaterials. In this study, we report a two-photon-responsive peptide-based supramolecular hydrogel, the fluidity of which was dramatically controlled with high spatial resolution (10 μm×10 μm×10 μm). The off-on switching of the Brownian motion of nanobeads and chemotaxis of bacteria by two-photon excitation was successfully demonstrated.
authors.affiliation: Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8510, (Japan).
authors.forename: Tatsuyuki
authors.initials: T
authors.lastname: Yoshii
authors.forename: Masato
authors.initials: M
authors.lastname: Ikeda
authors.forename: Itaru
authors.initials: I
authors.lastname: Hamachi
mesh_terms: D001419:Bacteria / Q000378:metabolism; D001431:Bacteriological Techniques / Q000295:instrumentation*; D002633:Chemotaxis; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry*; D015394:Molecular Structure; D009038:Motion; D053769:Nanocapsules / Q000737:chemistry; D017785:Photons
chemical_list: D053769:Nanocapsules; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate
keywords: gels; photochemistry; self-assembly; supramolecular chemistry