Aromatik hidrokarbonların dedekte edilmesi için kaliksaren bazlı diamid kimyasal sensor çiplerinin geliştirilmesi

Öz

Sunulan çalışmada, yeni kaliks[4]aren bazlı diamid makrosiklik malzemesi (SB77) sensör malzemesi olarak seçildi ve bu makrosiklik bileşiklerin Langmuir-Blodgett (LB) ince filmlerinin, aromatik hidrokarbon (benzen, toluen, ksilen)buharlarına karşı buhar algılama kapasiteleri Kuartz Kristal Mikrobalans (KKM) tekniği ile araştırılmıştır. Belirtilen amaç ile uyumlu olarak, kaliks[4]aren LB ince filmler kuartz kristal yüzeyler üzerinde hazırlanmıştır. SB77 LB ince filmlerin karakterizasyonu kuartz kristal yüzey üzerine üretilmiş 9 LB tabaka için gerçekleştirilmiştir. Bu LB ince filmlerin her bir tabaka için frekans değişimleri ve kütle miktarı değişimi sırasıyla 32.35 Hz / tabaka and 2206.65 ng (8.32 ng mm-2) olarak elde edilmiştir. Bütün QCM sonuçları, SB77 LB ince film kimyasal sensörlerin benzer buharının doymuş ve farklı konsantrasyonlarda diğer aromatik hidrokarbon buharlarına göre yüksek tepki, iyi bir hassasiyetlik ve seçicilik sergilediğini göstermiştir.SB77 kaliks[4]aren makrosiklik malzemesi, oda sıcaklığında basit ve düşük maliyet ile hazırlanması ile organik buhar dedekte etme uygulamaları için potansiyel aday olmaya sahiptir.

Anahtar Kelimeler

• Kaliksaren bazlı diamid
• LB ince film
• kimyasal sensör
• KKM

Developing of the calixarene based diamide chemical sensor chip for detection of aromatic hydrocarbons’ vapors

Öz

In the present work, a new macrocycle materials (SB77) was selected and Langmuir-Blodgett thin films of this macrocycle compounds were examined for its vapor sensing capabilities against vapor of aromatic BTX hydrocarbons (benzene, toluene, xylene) through Quartz Crystal Microbalance (QCM) technique. In accordance with this aim, the calix[4]arene LB thin films were prepared onto quartz crystal substrates. The characterization of SB77 LB thin film was performed for nine LB layers fabricated onto the quartz crystal. The frequency shifts and the mass changes for monolayer of these LB thin films were obtained as 32.35 Hz / per layer and 2206.65 ng (8.32 ng mm-2), respectively. All QCM results indicated that SB77 LB thin film chemical sensors exhibits high response, a good sensitivity and selectivity for benzene vapor at saturated or different concentrations than other aromatic hydrocarbon vapors. These LB thin film sensors with SB77 calix [4]arene macrocycle materials have been potential candidates for organic vapor sensing applications with simple and low cost preparation at room temperature.

Anahtar Kelimeler

• Calixarene based diamide
• LB thin film
• chemical sensor
• QCM

Kaynakça

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