Thermal-responsive Photonic Crystals based on Physically Cross-linked Inverse Opal Nanocomposite Hydrogels
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2021年第2期
论文作者：郑航 LI Jin SONG Weizheng HE Guangyao WANG Yifeng 陈艳军
文章页码：289 - 296
摘 要：A thermal-responsive photonic crystal material was fabricated by forming an inverse opal nanocomposite hydrogel of poly（N-isopropylacrylamide） (IONHPNIPAm) within the interstitial space of a polystyrene photonic crystal template.In IONHPNIPAm,PNIPAm were physically cross-linked with two kinds of nanoparticles （carbon dots and laponite clays）.The integration of carbon dots and laponite clays for physical crosslinking endowed IONHPNIPAm sufficient strength and self-healing property.IONHPNIPAm films can be completely peeled from the substrates to be utilized as an independent photonic crystal material.The structural color and optical diffraction of the IONHPNIPAm exhibits a rapid reversible change in response to external thermal stimuli due to its physical cross-linking feature.Moreover,the IONHPNIPAm shows clear fluorescence due to the introduction of carbon dots,which enables a convenient way for chemical detection （such as the detection of silver ions）.This stimuli-responsive photonic crystal materials based on physically cross-linked inverse opal nanocomposite hydrogels with fast response and good mechanical stability are promising for applications in the fields of smart optical detectors,thermal-responsive sensors and chemical detectors.
郑航，LI Jin，SONG Weizheng，HE Guangyao，WANG Yifeng，陈艳军
School of Materials Science and Engineering, Wuhan University of Technology
摘 要：A thermal-responsive photonic crystal material was fabricated by forming an inverse opal nanocomposite hydrogel of poly（N-isopropylacrylamide） (IONHPNIPAm) within the interstitial space of a polystyrene photonic crystal template.In IONHPNIPAm,PNIPAm were physically cross-linked with two kinds of nanoparticles （carbon dots and laponite clays）.The integration of carbon dots and laponite clays for physical crosslinking endowed IONHPNIPAm sufficient strength and self-healing property.IONHPNIPAm films can be completely peeled from the substrates to be utilized as an independent photonic crystal material.The structural color and optical diffraction of the IONHPNIPAm exhibits a rapid reversible change in response to external thermal stimuli due to its physical cross-linking feature.Moreover,the IONHPNIPAm shows clear fluorescence due to the introduction of carbon dots,which enables a convenient way for chemical detection （such as the detection of silver ions）.This stimuli-responsive photonic crystal materials based on physically cross-linked inverse opal nanocomposite hydrogels with fast response and good mechanical stability are promising for applications in the fields of smart optical detectors,thermal-responsive sensors and chemical detectors.
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