Fabrication of two-dimensional photonic crystals of tethered polyvinyltetrazole on silicon surfaces for visualization in Cu²⁺ ion sensing

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• 作者：Jun-Ru Zeng^a ; Chih-Chia Cheng^b ; Chi-Jung Chang^c ; Chi-Hsien Huang^d ; ^{chhuang@mail.mcut.edu.tw} ; Jem-Kun Chen^a ; ^{jkchen@mail.ntust.edu.tw}
• 关键词：Polyvinyltetrazole ; Hole array ; Refractive index ; Copper ions
• 刊名：Dyes and Pigments
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：139
• 期：Complete
• 页码：300-309
• 全文大小：1340 K
• 卷排序：139

文摘

Polyacrylonitrile (PAN) is grafted from a flat silicon substrate via ATRP. The PAN layer is etched to generate two-dimensional photonic crystals (2DPC). Polyvinyltetrazole (PVT) 2DPCs are obtained after a cyano-to-tetrazole conversion reaction. PVT 2DPCs exhibit a dramatic change in refractive index after copper ion absorption. Change in refractive index results in a color change from red to green after copper ion absorption.