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高等学校化学研究 ›› 2016, Vol. 32 ›› Issue (5): 862-866.doi: 10.1007/s40242-016-6069-7

• Articles • 上一篇    下一篇

Preparation of Single-handed Helical and C-Shaped 3-Aminophenol-formaldehyde Resin Nanotubes and Single-handed Helical Carbonaceous Nanotubes

CAO Yanfang, LIU Dan, LI Baozong, LI Yi, YANG Yonggang   

  1. State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
  • 收稿日期:2016-02-29 修回日期:2016-05-24 出版日期:2016-10-01 发布日期:2016-07-18
  • 通讯作者: LI Yi E-mail:liyi@suda.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China(Nos.51473106, 21574095) and the Science and Technology Plan(Nano Special) of Suzhou, China(No.ZXG201415).

Preparation of Single-handed Helical and C-Shaped 3-Aminophenol-formaldehyde Resin Nanotubes and Single-handed Helical Carbonaceous Nanotubes

CAO Yanfang, LIU Dan, LI Baozong, LI Yi, YANG Yonggang   

  1. State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
  • Received:2016-02-29 Revised:2016-05-24 Online:2016-10-01 Published:2016-07-18
  • Contact: LI Yi E-mail:liyi@suda.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.51473106, 21574095) and the Science and Technology Plan(Nano Special) of Suzhou, China(No.ZXG201415).

摘要:

Single-handed helical and C-shaped 3-aminophenol-formaldehyde resin nanotubes were prepared via a supramolecular templating approach. The chiral templates and 3-aminophenol were initially organized into helical nanoribbons, followed by the adsorption of formaldehyde onto the surfaces of the helical nanoribbons. Subsequent to polymerization and further thermosetting of the resin oligomers, 3-aminophenol-formaldehyde resin nanotubes were obtained after removing the templates. When low amounts of 3-aminophenol were added, straight C-shaped 3-aminophenol-formaldehyde resin nanotubes were obtained. Increasing the amount of added 3-aminophenol led to the formation of single-handed helical nanotubes instead. When the single-handed helical resin nanotubes were carbonized at 900℃ under Ar, single-handed helical carbonaceous nanotubes were obtained. Raman spectrum indicates that this carbon is predominantly amorphous. Circular dichroism spectra illustrate that both the helical resin nanotubes and the carbonaceous nanotubes exhibit optical activity. This work indicates that the added amount and the edge-adsorption mode of the precursors on the templates determine the final morphology and chirality of the products.

关键词: Chirality, Phenolic resin, Carbonaceous nanotube, Templating method

Abstract:

Single-handed helical and C-shaped 3-aminophenol-formaldehyde resin nanotubes were prepared via a supramolecular templating approach. The chiral templates and 3-aminophenol were initially organized into helical nanoribbons, followed by the adsorption of formaldehyde onto the surfaces of the helical nanoribbons. Subsequent to polymerization and further thermosetting of the resin oligomers, 3-aminophenol-formaldehyde resin nanotubes were obtained after removing the templates. When low amounts of 3-aminophenol were added, straight C-shaped 3-aminophenol-formaldehyde resin nanotubes were obtained. Increasing the amount of added 3-aminophenol led to the formation of single-handed helical nanotubes instead. When the single-handed helical resin nanotubes were carbonized at 900℃ under Ar, single-handed helical carbonaceous nanotubes were obtained. Raman spectrum indicates that this carbon is predominantly amorphous. Circular dichroism spectra illustrate that both the helical resin nanotubes and the carbonaceous nanotubes exhibit optical activity. This work indicates that the added amount and the edge-adsorption mode of the precursors on the templates determine the final morphology and chirality of the products.

Key words: Chirality, Phenolic resin, Carbonaceous nanotube, Templating method