Templated synthesis of shape-controlled polymeric nanofibers by chemical vapor deposition (CVD) in liquid crystals
US10907038B2 · kind B2 · utility
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Key dates
| Filing date | Apr 14, 2017 |
| Grant date | Feb 2, 2021 |
| Priority date | — |
| Expiry date | Apr 14, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13718
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Methods are provided for fabricating functional nanostructures (e.g., nanowires/nanofibers) via chemical vapor deposition polymerization of paracyclophanes or substituted paracyclophanes onto and through a structured fluid, such as a film of liquid crystals, on a substrate. A one-step process is provided that does not require the use of any solid templates, nor does it require any volatile solvents, additives or catalysts. The resulting nanowires/nanofibers can be in the form of aligned nanowires/nanofibers arrays supported on any solid material, in the form of nanofibers mats supported on porous materials, or as individual free-standing nanowires/nanofibers. By using chiral liquid crystals, chiral nanofibers can be fabricated. The functional nanowires/nanofibers can contain one or more type of surface reactive groups that allows for post surface chemical modifications on the nanowires/nanofibers. Such nanostructures can be used in a range of different applications, including in biomedical applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.