Carbon nanotubes-porphyrin sensors

Shirsat MD, Sarkar T, Kakoullis J Jr, Myung NV, Konnanath B, Spanias A, Mulchandani A. Porphyrin-functionalized single-walled carbon nanotube chemiresistive sensor arrays for VOCs. J Phys Chem C 2012 116 3845-50. 

Hemoglobin was determined with a sensor made of tetra-(A-phenylpyrazole) porphyrin/p-cyclodextrin/carbon nanotube film [234]. 

Lu X, Quan Y, Xue Z, Wu B, Qi H, Liu D. Determination of explosives based on novel type of sensor using porphyrin functionalized carbon nanotubes. Colloids Surf B 2011 88 ... 

Karimipour G, Ghaedi M, Behfar M, Andikaey Z, Kowkabi S, Orojloo AH. Synthesis and application of new porphyrin derivatives for preparation of copper selective electrodes influence of carbon nanotube on their responses. IEEE Sensors J 2012 12 2638-47. 

A sensor for nitric oxide was constructed utilizing multiwaUed carbon nanotubes that were previously modified with ethylenediamine and sonicated in a solution containing Co -TSPP. Drop cast electrodes were prepared and characterized by field-emission transmission electron microscopy, X-ray photoelectron spectroscopy and by electrochemical techniques [220]. Cyclic voltammetry, electrochemical impedance, and chronoamperometry were utilized to evaluate the electrocatalytic activity of the hybrid sensor that exhibited linear response in the 6.6 x 10 to 1.3 X 10 mol L range, with a detection limit of 6.6 x 10 mol L. Electrodes composed of porphyrins, platinum nanowires, and Nafion were proposed for photocatalytic reduction of water [221]. After an extensive search for optimization of each component and under the best conditions (—350 mV and visible light irradiation) a detectable amount of hydrogen was produced, but Nafion can diminish the diffusion of ions to the porphyrin active sites. 

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