Details

Autor(en) / Beteiligte

• Fernandes, Susete N
• Aguirre, Luis E
• Pontes, Rita V
• Canejo, João P
• Brogueira, Pedro
• Terentjev, Eugene M
• Godinho, Maria H

Titel

Cellulose-based nanostructures for photoresponsive surfaces

Ist Teil von

• Cellulose (London), 2016-02, Vol.23 (1), p.465-476

Ort / Verlag

Dordrecht: Springer Netherlands

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Cellulose is the main constituent of plant cell walls and can be converted into a wide range of derivatives. The derivatives are produced by a chemical reaction of the primary and two secondary hydroxyl groups available in β-D-glucopyranose units, often in heterogeneous conditions, yielding, in many cases, <3 average degrees of substitution per glucose unit. Here we profit from the richness of these systems and different assembly conditions building up from similar nanomicelles, with a characteristic length of ca. 30 nm, different nanostructures: lamellas and filaments that show dissimilar responses to UV irradiation. The chosen cellulose derivative was a thermotropic liquid crystal synthesized by the reaction of 4-(4-methoxyazobenzene-4′-yloxy)butanoyl chloride and acetoxypropylcellulose. The nanostructures were obtained from this cellulose derivative by using spin-coating as well as Langmuir–Blodgett techniques. The nanostructures with a high surface-to-volume ratio, which can be freestanding or grown off a substrate, lead to organic tunable interfacial templates with distinct wettability properties.