Moleküler Baskılı Polimerler ile Modifiye Edilmiş Karbon Pasta Elektrotlarla Thiuramın Voltametrik Tayini

Yıl 2018, Sayı: 14, 323 - 333, 31.12.2018

Mert Soysal , Ali Ersin Karagözler

https://doi.org/10.31590/ejosat.476017

Cited By: 2

Öz

Spesifik tanıma özelliği
bakımından molekül baskılama tekniği, üç boyutlu polimerik malzemelerin
hazırlanmasında önemli bir araç haline gelmiştir. Üç boyutlu olarak çapraz bağlanmış
polimerik malzemeler, kalıp molekülünün bulunduğu ortamdaki fonksiyonel
monomerlerin polimerizasyonu ile elde edilirler. Daha sonra, uygun sökme
prosedürüyle kalıp molekülünün şekil, boyut ve fonksiyonel gruplarına ait tamamlayıcı
tanıma bölgeleri oluşturulur. Böylelikle, molekül baskılı polimerler, kalıp
moleküle karşı seçici özellik göstermesinin yanı sıra kararlı bir yapıda
bulunması, sıcaklığa ve basınca karşı dayanıklı, kimyasallara karşı dirençli olmaları
ve tekrar kullanılabilmeleri gibi özelliklerinden dolayı sıklıkla
kullanılmaktadır. Günümüzde, moleküler baskılama tekniği, kromatografi, sensör
vb. gibi çeşitli analitik tekniklerle başarı bir şekilde birleştirilmiştir.

Bu çalışmada, thiuram baskılı
mikroküreler sentezlendi ve FT-IR spektroskopisi ve Taramalı Elektron
Mikroskobu (SEM) ile karakterize edildi. Thiuram molekülü baskılanmış
polimerlerle modifiye edilmiş olan karbon pasta elektrot (CPE), difrensiyel
puls voltametrisi (DPV) kullanılarak thiuram etken maddesi içeren pestisit
örneğinde thiuram tayini yapılmıştır.

Anahtar Kelimeler

Thiuram, Elektrokimyasal Sensör, Molekül Baskılı Polimer, Karbon Pasta Elektrot

Voltammetric Determination of Thiuram by Carbon Paste Electrodes Modified with Molecular Imprinted Polymers

Öz

Molecular
imprinting has become a powerful tool for the preparation of three dimensional
polymeric materials with special recognition ability. The three dimensionally
cross-linked polymeric materials are obtained by polymerization of functional
monomers in the presence of template molecule. Then, leaching of template
molecules by a leaching procedure generates the recognition cavities
complementary to the shape, size and functional groups of the template
molecules. Thus, molecularly imprinted polymers are often used because of their
stability, their resistance to temperature and pressure, resistance to effects
of the chemicals and their re-use, as well as their selective properties
against template molecule. Nowadays, molecular imprinting technique has been
successfully assembled with a several of analytical techniques in
chromatography, sensor etc.

In this study, thiuram imprinted
microbeads were synthesized and characterized by Fourier Transform Infrared
Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM). A carbon paste
electrode (CPE) was modified with thiuram molecular imprinted polymer (MIP) and
used for the determination of thiuram in active substance of pesticide sample
by Differential Pulse Voltammetry (DPV).

Anahtar Kelimeler

Thiuram, Electrochemical Sensor, Molecular Imprinting Polymer, Carbon Paste Electrode

Kaynakça

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