Smart Photonic Indicator for Ethanol Detection via Pressure-Responsive Shape Memory Polymers

被引：0

作者：

Ashurov, Matin ^{[1
,2
]}

Stetsenko, Maksym ^{[1
,2
]}

Ud Din, Salah ^{[3
]}

Chen, Xinyu ^{[1
,2
]}

Nematulloev, Saidkhodzha ^{[4
]}

Savvidis, Pavlos G. ^{[1
,2
]}

机构：

[1] Department of Physics, School of Science, Westlake University, Hangzhou

[2] Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, Westlake University, Hangzhou

[3] School of Microelectronics, Southern University of Science and Technology, Shenzhen

[4] Division of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology, Thuwal

来源：

SmartMat | 2025年 / 6卷 / 04期

关键词：

inverse opals; photonic crystals; shape memory polymers; smart indicators;

D O I：

10.1002/smm2.70026

中图分类号：

学科分类号：

摘要：

Smart photonic indicators (SPIs) offer a cost-effective and efficient way to monitor and control ethanol concentration, making them suitable for advanced digital informatics systems. The developed sensors can operate even after the removal of external stimuli, featuring exceptional optical memory and reconfigurable nanostructures, which will undoubtedly drive a revolution in colorimetric sensors. The SPI is prepared by polymerizing mixed monomers of poly(ethylene glycol) diacrylate (PEG600DA) and ethoxyethoxyethyl acrylate (EOEOEA) in a silica colloidal crystal template. SPIs contain periodically ordered interconnecting macropores via shape memory polymers (SMPs) that endow the films with structural colors. The evaporation of water can temporarily deform the initial periodic structure. The structure can then be restored by evaporating liquids with lower surface tension, such as water-ethanol solutions. The Laplace pressure generated during solvent evaporation competes with the elasticity of SMPs, driving nanoscale structural transformation. Consequently, the detection range of SPIs for ethanol concentration in water depends on the balance between these two driving forces. Adjusting the size of the macropores expands the detection range allowing differentiation of alcohol concentrations from 5% to 100%. SPIs with selectivity and high sensitivity hold promise for various applications, including information technology, inkless writing, and anticounterfeiting, enhancing the versatility of photonic materials. © 2025 The Author(s). SmartMat published by Tianjin University and John Wiley & Sons Australia, Ltd.

引用

共 68 条

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