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Chirality control of self-assembled achiral nanofibers using amines in their solid state
Sung Ho Jung1, Jiwon Jeon, Hyungjun Kim
1Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju, Korea. jonghwa@gnu.ac.kr.
Nanoscale
|August 29, 2015
Summary
This study introduces a novel supramolecular nanofiber that reversibly transforms into a helix when exposed to chiral molecules. This discovery offers a new method for detecting molecular chirality in solid-state systems.
Area of Science:
- Supramolecular chemistry
- Materials science
- Chiral recognition
Background:
- Helical and spiral structures are common in nature.
- Reversible solid-to-solid helical transformations triggered by chiral analytes are rare in supramolecular systems.
Purpose of the Study:
- To develop a supramolecular system capable of reversible helical transformation.
- To demonstrate chiral recognition and amplification in the solid-state.
- To create a reusable system for detecting molecular chirality.
Main Methods:
- Fabrication of non-helical nanofibers.
- Induction of helical rearrangement using chiral diamines and monoamines.
- Structural analysis using Scanning Electron Microscopy (SEM) and Circular Dichroism (CD) spectroscopy.
- Development of electrospun nanofiber films for chiral detection.
Main Results:
- The supramolecular nanofiber undergoes reversible helical rearrangement in response to specific chiral analytes.
- The system demonstrates amplification of chiral information in a solid-state manner.
- Electrospun nanofiber films successfully distinguished chiral diamines and monoamines via CD analysis.
- The developed system is reusable for chiral detection.
Conclusions:
- A novel supramolecular nanofiber system enables reversible solid-state helical transformation based on molecular chirality.
- This work presents the first example of chiral information amplification in solid-state electrospun nanofiber films.
- The system offers a reusable and sensitive method for detecting and distinguishing chiral molecules.
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