Preparation of pillar[5]arene-quinoline Langmuir–Blodgett thin films for detection of volatile organic compounds with host–guest principles

The Analyst ◽  
2017 ◽  
Vol 142 (19) ◽  
pp. 3689-3698 ◽  
Author(s):  
Ahmed Nuri Kursunlu ◽  
Yaser Acikbas ◽  
Mustafa Ozmen ◽  
Matem Erdogan ◽  
Rifat Capan

In this study, a novel pillar[5]arene-quinoline (P5-Q) as an organic material is used to fabricate Langmuir–Blodgett (LB) thin films and its organic vapor sensing properties have been investigated.

2019 ◽  
Vol 27 (02) ◽  
pp. 1950106
Author(s):  
SİBEL ŞEN

To determine thin films’ properties of commercially available gallic acid molecule, they were deposited onto a suitable substrate using spin coater. UV–Visible absorption spectroscopy and atomic force microscopy (AFM) were employed for the characterization of the deposited thin films. Characterization results obtained by these two techniques indicated that the gallic acid molecules are suitable for transfer onto a glass or quartz substrate. Gas-sensing properties and thickness of these thin films were elucidated using surface plasmon resonance (SPR). Thickness values of spun thin films were obtained at different spinning speeds. Then, the gas-sensing properties were examined by exposing them to the vapors of four volatile organic compounds (VOCs). It was found that the spun films of this material were selective for methanol vapor yielding rapid response and recovery time and thin films of gallic acid exhibited reversible changes in the optical behavior, which makes them suitable for practical methanol-detection applications.


2017 ◽  
Vol 253 ◽  
pp. 266-274 ◽  
Author(s):  
Adriano Colombelli ◽  
Michele Serri ◽  
Matteo Mannini ◽  
Roberto Rella ◽  
Maria Grazia Manera

2020 ◽  
Vol 5 (6) ◽  
pp. 1057-1070
Author(s):  
Cansu Ozkaya ◽  
Rifat Capan ◽  
Matem Erdogan ◽  
Furkan Ozcil ◽  
Funda Yukruk

Langmuir–Blodgett (LB) thin films were prepared using an N,N′-bis(l-alanine tert-butylester)-3,4:9,10-perylene diimide derivative to determine the optimum thin film forming conditions and their sensing properties towards volatile organic vapors.


Talanta ◽  
2009 ◽  
Vol 80 (1) ◽  
pp. 263-268 ◽  
Author(s):  
Necmettin Kılınç ◽  
Devrim Atilla ◽  
Ayşe Gül Gürek ◽  
Zafer Ziya Öztürk ◽  
Vefa Ahsen

2018 ◽  
Vol 55 (7) ◽  
pp. 526-532 ◽  
Author(s):  
Yaser Acikbas ◽  
Selahattin Bozkurt ◽  
Matem Erdogan ◽  
Erkan Halay ◽  
Abdulkadir Sirit ◽  
...  

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3258
Author(s):  
Gábor Piszter ◽  
Krisztián Kertész ◽  
Zsolt Bálint ◽  
László Péter Biró

Biological photonic nanoarchitectures are capable of rapidly and chemically selectively sensing volatile organic compounds due to changing color when exposed to such vapors. Here, stability and the vapor sensing properties of butterfly and moth wings were investigated by optical spectroscopy in the presence of water vapor. It was shown that repeated 30 s vapor exposures over 50 min did not change the resulting optical response signal in a time-dependent manner, and after 5-min exposures the sensor preserved its initial properties. Time-dependent response signals were shown to be species-specific, and by using five test substances they were also shown to be substance-specific. The latter was also evaluated using principal component analysis, which showed that the time-dependent optical responses can be used for real-time analysis of the vapors. It was demonstrated that the capability to detect volatile organic compounds was preserved in the presence of water vapor: high-intensity color change signals with short response times were measured in 25% relative humidity, similar to the one-component case; therefore, our results can contribute to the development of biological photonic nanoarchitecture-based vapor detectors for real-world applications, like living and working environments.


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