In this study; a novel all‐solid‐state type potentiometric microsensor based on ion‐imprinted polymer (IIP) has been developed for Cu(II) sensing. The IIP was synthesized by suspension polymerization by using Cu(II) ion, methacrylamide, methacrylic acid and ethylene glycol dimethacrylate as template, functional monomers and cross‐linker respectively. The resultant Cu(II)‐imprinted polymer was used as ionophore in the structure of the PVC membrane to obtain a selective potentiometric response towards Cu(II) ions. The fabricated microsensor exhibited a highly selective Nernstian response (28.6±2.2 mV per decade) over the concentration range of 10−1 to 10−6 mol L−1 of Cu2+ ion for 2 months without any considerable divergence in potentials. The response time of the microsensor was considerably short (less than 15 s) and its detection limit was determined as 7.6×10−7 mol L−1. The microsensor was effectively performed in the pH range of 4–7. The microsensor was successfully used as an indicator electrode in the potentiometric titration of Cu(II) ions with EDTA. The proposed microsensor was also used for the determination of Cu(II) contents of some environmental water samples. The obtained potentiometric results were in good harmony with the results obtained by the AAS method.

A novel potentiometric Cu2+-selective microsensor has been developed that is based upon ion imprinted 2-vinylpyridine polymer. The polymer was synthesized using Cu(II) ions, 2-vinylpyridine, methacrylic acid, and ethylene glycol dimethacrylate as a template, functional monomer, and cross-linker, respectively. The resultant polymer was used as ionophore to obtain a selective potentiometric response towards Cu(II) ions in the structure of the PVC membrane. The detection limit of the microsensor was determined to be 8.4 × 10−7 mol/L, and its response time was considerably short (less than 15 s). The prepared microsensor exhibited a near-Nernstian response for Cu(II) ions over the concentration range of 10−1 to 10−6 mol/L, with a slope of 28.5 mV per decade over 2 months, and without any considerable divergence in potentials. The microsensor was effectively performed in a pH range between 4.0 and 7.0 and used as an indicator electrode in the potentiometric titration of Cu(II) ions with EDTA. The proposed microsensor has been successfully demonstrated for the determination of copper in a number of environmental water samples. The obtained potentiometric results were in good harmony with the results obtained by the AAS method.

Kreatinin baskılanmış polimer temelli bütünüyle katı-hal polivinilklorür (PVC)-membran potansiyometrik kreatininseçici mikrosensör geliştirildi. Baskılanmış polimer sentezinde; kalıp molekül, fonksiyonel monomer ve çapraz bağlayıcı olarak sırasıyla; kreatinin, metakrilik asit ve etilen glikol dimetakrilat (EGDMA) kullanıldı. Elde edilen kreatininbaskılanmış polimerin iyonofor olarak kullanılmasıyla, PVC-membran yapısında kreatinine karşı seçici bir yanıt elde edildi. Kreatinin-seçici mikrosensörün bazı potansiyometrik performans özellikleri (doğrusal çalışma aralığı, tayin sınırı, seçicilik, eğim, cevap süresi, kullanım ömrü, pH ve sıcaklık vb.) incelendi. Hazırlanan mikrosensör, 57,2±1,2 mV (R 2 : 0,9979) eğimle 10 -1 -10 -5 mol.L -1 konsantrasyon aralığında Nernst davranışı sergiledi. Geliştirilen mikrosensör elde edilen potansiyellerde önemli farklılıklar olmaksızın yaklaşık olarak altı hafta boyunca kullanıldı. Geliştirilen mikrosensörün tayin sınırı 5,0x10 -6 mol.L -1 ve cevap süresi oldukça kısaydı (<15 s). Mikrosensörün pH çalışma aralığı 6,0-10,0 olarak belirlendi. Geliştirilen mikrosensör kullanılarak, sentetik numunelerde bulunan kreatinin başarıyla tayin edildi. Elde edilen potansiyometrik veriler, UV spektroskopi yöntemi ile elde edilen verilerle karşılaştırıldı ve metotların %95 güven sevisinde uyumlu olduğu sonucuna varıldı.