Photonic NO <sub>2</sub> Gas Sensing with Binaphthyl‐Based Dopants
نویسندگان
چکیده
A series of reactive binaphthyl-diimine-based dopants is prepared and investigated with respect to their potential for the chiral induction structural coloration in nematic liquid crystal mixture E7 selective photonic sensing nitrogen dioxide (NO2). Studies helical twisting power (HTP) 4-cyano-4′-pentylbiphenyl (5CB) reveal HTP values as high 375 µm-1 tremendous impact compatibility changes dihedral binaphthyl angle on efficiency transfer. Detailed investigation capabilities systems reveals an extraordinarily selectivity NO2 a response concentrations low 100 ppm. The show direct analyte gas leading concentration-dependent shift reflectance wavelength up several hundred nanometers. Incorporation copper ions remarkably improves sensor's properties terms sensitivity selectivity, enabling tailored tweaking system's properties.
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ژورنال
عنوان ژورنال: Advanced Optical Materials
سال: 2021
ISSN: ['2195-1071']
DOI: https://doi.org/10.1002/adom.202001828