Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 50, Pages 16323-16328Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201808250
Keywords
acylation; cellulose; helical fibers; nanowhiskers; self-assembly
Categories
Funding
- German Research Foundation (DFG) [ZH546/2-1]
- Georg-August-University of Goettingen
- Chinese Scholarship Council (CSC)
Ask authors/readers for more resources
Many natural materials have helical or twisting shapes. Herein, we show the formation of helical fibers with the lengths of micrometers by the evaporation-driven self-assembly on silicon wafers of functionalized cellulose nanowhiskers (CNWs) with surface-attached acyl chains. The self-assembly process and the final helical structures were affected by parameters including the wettability of substrates, dispersing solvents, the amount of 10-undecenoyl groups, the crystallinity, the dimension of CNWs, and the length of acyl chains. In particular, surface-acylated CNWs with a certain amount of 10-undecenoyl groups (ca. 3.52 mmolg(-1)), an appropriate crystallinity (ca. 40%), a length of about 135nm, and a diameter of around 4nm, preferentially self-assembled into explicit left-handed helical fibers from their THF suspensions on wafers. Thus, we showed novel particular self-assembly behaviors of surface-acylated CNWs, and we expanded the materials spectrum for the construction of helical structures.
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