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Multiscale Structures Aggregated by Imprinted Nanofibers for Functional Surfaces
Published on: September 11, 2018
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Layer-by-Layer Surface Molecular Imprinting on Polyacrylonitrile Nanofiber Mats
Yuxuan Liu1, Bing Cao1, Peng Jia1
1Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, China 100029.
The Journal of Physical Chemistry. A
|June 4, 2015
Summary
This study introduces surface molecular imprinting in layer-by-layer (SMI-LbL) films on nanofibers for enhanced template molecule accessibility. The novel material demonstrates high selectivity and capacity for Porphyrin molecule extraction.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Engineering
Background:
- Surface molecular imprinting in layer-by-layer (SMI-LbL) films offer improved template accessibility compared to traditional polymer imprinting.
- Electrospun nanofibers provide a high surface area scaffold for advanced material fabrication.
Purpose of the Study:
- To develop surface molecular imprinted layer-by-layer (SMI-LbL) films on electrospun nanofibers for the first time.
- To evaluate the binding capacity, reusability, and selectivity of the fabricated imprinted nanofibers.
Main Methods:
- Template-induced layer-by-layer (LbL) assembly on polyacrylonitrile (PAN) nanofibers.
- Post-infiltration and photo-cross-linking using 4,4'-diazostilbene-2,2'-disulfonic acid disodium salt (DAS).
- Binding experiments using meso-tetra(4-carboxyphenyl)-porphine (Por) as the template molecule and Fast Green as a control.
Main Results:
- The SMI-LbL nanofibers retained their structure and exhibited rapid absorption and extraction of Por.
- A binding capacity of 2.1 mg/g for Por was achieved with 3.5 bilayers.
- High binding capacity (83% after six cycles) and specific absorption for Por over Fast Green were demonstrated.
Conclusions:
- Successfully fabricated surface molecular imprinted nanofibers using the SMI-LbL technique.
- The developed material shows excellent selectivity and reusability for targeted template molecule recognition.
- This work presents a promising approach for creating selective adsorbent materials on nanofiber scaffolds.
