Langmuir–Blodgett thin film for chloroform detection

Çapan, Rıfat; Göktaş, Hilal; Özbek, Zikriye; Şen, Sibel; Özel, M. E.; Davis, Frank

doi:10.1016/j.apsusc.2015.02.109

Cited by 26 publications

(4 citation statements)

References 23 publications

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“…From this data, the thickness of the transferred layers can be determined. Since SPR curve can display the distribution and amount of molecules transferred to a metal surface in real time, its use for the determination of the manufacturability of thin film monolayers is quite common [29].…”

Section: Fig 1 a Symbolic Presentation Of The Spr Measurementsmentioning

confidence: 99%

Surface plasmon resonance chemical sensor modified with α-naphthylmethacrylate nano thin film for chloroform detection

Acikbas

2023

Res. Eng. Struct. Mat.

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The research on the rapid and sensitive detection of pollution caused by the products and technologies used has recently attracted attention in the literature. In the detection of volatile organic compounds (VOCs), polymers/monomers are used in the production of sensitive, fast-responding, reversible thin-film gas sensor elements. In this work, the monomer α-Naphthylmethacrylate was selected as thin film sensor element. The α-Naphthylmethacrylate-based nano thin films were prepared with technique of LB. Monomer LB thin films fabricated onto gold-coated glass substrate to investigate their vapour sensing properties by using Surface Plasmon Resonance (SPR) optical technique. This prepared monomer-based thin film sensor exposed to five different concentrations of chloroform vapors varying between 13.98x103-69.9x103 ppm and the sensor response values were recorded. Swelling dynamics’ of this monomer thin film sensor was also illuminated by using Fick's early-time diffusion law. Diffusion coefficients of α-Naphthylmethacrylate LB thin film sensor materials exposed to the five different concentrations of chloroform vapor were calculated with the help of reflected light intensity graph data and Fick's Law as a function of time. It was determined that the diffusion coefficient values of the first and second slope regions as varying between 5.72x10-17-21.97x10-17 cm2s-1 and 3.06x10-17-6.25x10-17 cm2s-1, respectively. SPR kinetic measurement results showed that α-Naphthylmethacrylate material is promising for the detection of chloroform vapor.

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Section: Fig 1 a Symbolic Presentation Of The Spr Measurementsmentioning

confidence: 99%

Surface plasmon resonance chemical sensor modified with α-naphthylmethacrylate nano thin film for chloroform detection

Acikbas

2023

Res. Eng. Struct. Mat.

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“…LB films can form as a monolayer or multilayers using an organic material with very accurate thickness (Rivera, Rivera, Rivera, Amelines-Sarria, & Wang, 2018). The researchers focus on the nano-scaled controlled LB thin films because of their homogeneity and ability to exhibit strong interactions with the harmful vapors (Çapan et al, 2015;Cote, Kim, & Huang, 2008;Kumar, Chawla, & Zou, 2017;Penza et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Developing ofN‐(4‐methylpyrimidine‐2‐yl)methacrylamideLangmuir–Blodgettthin film chemical sensor via quartz crystal microbalance technique

Açıkbaş

Tetik

Özkaya

et al. 2020

Microscopy Res & Technique

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In the present work, the characterization and gas sensing properties of newly synthesized N‐(4‐methylpyrimidine‐2‐yl)methacrylamide (N‐MPMA) monomer Langmuir–Blodgett (LB) thin films were investigated. The UV–visible spectroscopy, quartz crystal microbalance (QCM), and atomic force microscopy were utilized to characterize N‐MPMA LB thin films. The surface behavior of N‐MPMA monolayer was stable and allowed an effective transfer at a surface pressure of 14 mN/m. The mass change/unit area value of the N‐MPMA LB thin film deposited quartz crystal surfaces was investigated. The amount of N‐MPMA LB thin film deposited on the substrate for bilayer was calculated as 228.72 ng (86.31 ng/mm2) and 12.5 Hz frequency shift was observed for each layer of the N‐MPMA film. The kinetic responses of N‐MPMA LB film against chloroform, dichloromethane, benzene, and toluene were measured via QCM system at room temperature. N‐MPMA QCM sensor results displayed that chloroform has the largest frequency shifts compared with the other vapors used in the present work and these results can be illuminating in terms of physical properties of organic vapors.

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“…16 Changes of the LB lms properties caused by absorption of the target molecules can be monitored by QCM and UV-vis spectroscopy as well, especially when they are accompanied by swelling of the polymer LB lm. 17 Surface plasmon resonance (SPR) technique has also been used to monitor changes in LB lms. 17,18 Moreover, surface plasmons related phenomena can be employed for sensing purposes by themselves.…”

Section: Introductionmentioning

confidence: 99%

“…17 Surface plasmon resonance (SPR) technique has also been used to monitor changes in LB lms. 17,18 Moreover, surface plasmons related phenomena can be employed for sensing purposes by themselves.…”

Section: Introductionmentioning

confidence: 99%