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10.3390/gels3010009
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Article

Synthesis of Helical Phenolic Resin Bundles through a Sol-Gel Transcription Method

by
Changzhen Shao
,
Jiangang Li
,
Hao Chen
,
Baozong Li
,
Yi Li
* and
Yonggang Yang
Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
*
Author to whom correspondence should be addressed.
Gels 2017, 3(1), 9; https://doi.org/10.3390/gels3010009
Submission received: 5 January 2017 / Revised: 17 February 2017 / Accepted: 18 February 2017 / Published: 23 February 2017
(This article belongs to the Special Issue Gels as Templates for Transcription)
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Abstract

Chiral and helical polymers possess special helical structures and optical property, and may find applications in chiral catalysis and optical devices. This work presents the preparation and formation process of helical phenolic resins through a sol-gel transcription method. A pair of bola-type chiral low-molecular-weight gelators (LMWGs) derived from valine are used as templates, while 2,4-dihydroxybenzoic acid and formaldehyde are used as precursors. The electron microscopy images show that the phenolic resins are single-handed helical bundles comprised of helical ultrafine nanofibers. The diffused reflection circular dichroism spectra indicate that the helical phenolic resins exhibit optical activity. A possible formation mechanism is proposed, which shows the co-assembly of the LMWGs and the precursors.
Keywords: nanoparticles; polymers; sol-gel preparation; optical activity nanoparticles; polymers; sol-gel preparation; optical activity
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MDPI and ACS Style

Shao, C.; Li, J.; Chen, H.; Li, B.; Li, Y.; Yang, Y. Synthesis of Helical Phenolic Resin Bundles through a Sol-Gel Transcription Method. Gels 2017, 3, 9. https://doi.org/10.3390/gels3010009

AMA Style

Shao C, Li J, Chen H, Li B, Li Y, Yang Y. Synthesis of Helical Phenolic Resin Bundles through a Sol-Gel Transcription Method. Gels. 2017; 3(1):9. https://doi.org/10.3390/gels3010009

Chicago/Turabian Style

Shao, Changzhen, Jiangang Li, Hao Chen, Baozong Li, Yi Li, and Yonggang Yang. 2017. "Synthesis of Helical Phenolic Resin Bundles through a Sol-Gel Transcription Method" Gels 3, no. 1: 9. https://doi.org/10.3390/gels3010009

APA Style

Shao, C., Li, J., Chen, H., Li, B., Li, Y., & Yang, Y. (2017). Synthesis of Helical Phenolic Resin Bundles through a Sol-Gel Transcription Method. Gels, 3(1), 9. https://doi.org/10.3390/gels3010009

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