Journal
RSC ADVANCES
Volume 3, Issue 36, Pages 15909-15916Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra43031f
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [20974114, 21174156, 21064001]
- China Ministry of Science and Technology [2011IM030400]
- Knowledge Innovation Program of the Chinese Academy of Sciences [KJCX2-YW-H19]
Ask authors/readers for more resources
Azobenzene functionalized hydroxypropyl cellulose derivatives (azo-HPCs) with different degrees of substitution with azobenzene moieties were synthesized and characterized. The degree of substitution with the azobenzene moieties (DSazo) can be adjusted by changing the feed ratio in the reaction mixture. The photosensitivity of the azo-HPCs in both solution and solution film was investigated. The azobenzene moieties of the azo-HPCs exhibited a reversible cis-to-trans isomerization transition upon irradiation with UV and visible light in both solution and the solid state. The reversible trans-to-cis photoisomerization led to a change of the wettability of the azo-HPC films. Surface energy estimations suggest that the tunable film wettability was attributed to the change of the dipole moment of the azobenzene moieties in the film surface. The variation of the contact angle depends on the DSazo of the azo-HPC derivatives. A higher DSazo corresponds to a larger variation of water contact angle upon UV irradiation under the same conditions. This work offers a versatile method to manipulate the surface properties of the eco-friendly cellulose derivatives.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available