期刊
CELLULOSE
卷 21, 期 3, 页码 1591-1599出版社
SPRINGER
DOI: 10.1007/s10570-014-0205-7
关键词
Cellulose nanocrystals; Self-assembly; Wrinkled PDMS; Surface patterning; Colloids; Templated assembly; Directed assembly
资金
- Wallenberg Wood Science Center (WWSC)
- Svensk Franska stiftelsen
- Swedish Research Council
- FORMAS
Cellulose nanocrystals are aligned in wrinkled polydimethylsiloxane templates and transferred to polyethyleneimine-coated silica surfaces in a printing process similar to microcontact printing. The highly aligned nanorods were deposited onto the surfaces with a line-to-line distance of 225-600 nm without loss of alignment. It was also possible to repeat the transfer process on the same surface at a 90-degree angle to create a network structure. This demonstrates the versatility of the technique and creates more options for advanced multilayering of materials. To demonstrate that the surface properties of the anionic cellulose nanorods were unaffected by the transfer process and to prove the concept of functionalizing transferred particles, cationic latex particles were electrostatically self-assembled onto the cellulose nanorods. The directed deposition of these particles resulted in excellent site specificity and the highest resolution to date for controlled deposition of colloids on an electrostatically patterned surface.
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