NDLI: Exploration on Structural and Optical Properties of Nanocrystalline Cellulose/Poly(3,4-Ethylenedioxythiophene) Thin Film for Potential Plasmonic Sensing Application

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Exploration on Structural and Optical Properties of Nanocrystalline Cellulose/Poly(3,4-Ethylenedioxythiophene) Thin Film for Potential Plasmonic Sensing Application

Content Provider	MDPI
Author	Ramdzan, Nur Syahira Fen, Yap Wing Liew, Josephine Ying Chyi Omar, Nur Alia Sheh Anas, Nur Ain Asyiqin Daniyal, Wan Mohd Ebtisyam Mustaqim Mohd Fauzi, Nurul Illya Muhamad
Copyright Year	2021
Description	There are extensive studies on the development of composite solutions involving various types of materials. Therefore, this works aims to incorporate two polymers of nanocrystalline cellulose (NCC) and poly(3,4-ethylenethiophene) (PEDOT) to develop a composite thin film via the spin-coating method. Then, Fourier transform infrared (FTIR) spectroscopy is employed to confirm the functional groups of the NCC/PEDOT thin film. The atomic force microscopy (AFM) results revealed a relatively homogeneous surface with the roughness of the NCC/PEDOT thin film being slightly higher compared with individual thin films. Meanwhile, the ultraviolet/visible (UV/vis) spectrometer evaluated the optical properties of synthesized thin films, where the absorbance peaks can be observed around a wavelength of 220 to 700 nm. An optical band gap of 4.082 eV was obtained for the composite thin film, which is slightly lower as compared with a single material thin film. The NCC/PEDOT thin film was also incorporated into a plasmonic sensor based on the surface plasmon resonance principle to evaluate the potential for sensing mercury ions in an aqueous medium. Resultantly, the NCC/PEDOT thin film shows a positive response in detecting the various concentrations of mercury ions. In conclusion, this work has successfully developed a new sensing layer in fabricating an effective and potential heavy metal ions sensor.
Starting Page	419
e-ISSN	23046732
DOI	10.3390/photonics8100419
Journal	Photonics
Issue Number	10
Volume Number	8
Language	English
Publisher	MDPI
Publisher Date	2021-09-29
Access Restriction	Open
Subject Keyword	Photonics Spectroscopy Nanocrystalline Cellulose Poly(3,4-ethylenedioxythiophene) Structural Properties Optical Properties Surface Plasmon Resonance
Content Type	Text
Resource Type	Article

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