Cellulose ternary photonic crystal created by solution processing

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• 作者：Giovanni Manfredi ; Claudia Mayrhofer ; Gerald Kothleitner ; Robert Schennach…
• 关键词：Photonics ; Thin films ; Spin coating ; TEM ; TMSC
• 刊名：Cellulose
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：23
• 期：5
• 页码：2853-2862
• 全文大小：1,466 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Bioorganic Chemistry
  Physical Chemistry
  Organic Chemistry
  Polymer Sciences
  
• 出版者：Springer Netherlands
• ISSN：1572-882X
• 卷排序：23

文摘

For the first time, a multiplanar photonic crystal structure has been obtained using cellulose as a structural material. This all-polymer system, made of cellulose, polyvinyl alcohol and poly(N-vinylcarbazole) is a ternary planar photonic crystal composed by 7 repeated trilayers produced by spin coating. Trimethylsilyl cellulose is used as a precursor to be converted to cellulose. Transverse Transmission Electron Microscopy analysis of our systems confirms the multilayered structure whose optical response can be theoretically accounted for. Preliminary results on the response of the photonic crystal to water vapors envisage the use of this system for humidity optical sensing.