β-Cyclodextrin as a Metal-anionic Porphyrin Complexation Accelerator in Aqueous Media

Ohtomo, Takao; Yokoyama, Aya; Konno, Mitsuyuki; Ohno, Osamu; Igarashi, Shukuro; Takagai, Yoshitaka

doi:10.2116/analsci.32.623

Cited by 3 publications

(1 citation statement)

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“…8,9 Their photoelectric properties such as strong absorption bands in the UV-vis region and a redox center, have opened a wide field of applications in photosensitive conductors, solar cells and chemical sensors. 7,[10][11][12] Trimethylamine (TMA) is usually generated from the microbial degradation of trimethylamine N-oxide during the deterioration of fish and seafood. 13 Also the concentration of TMA will increase with the degree of decaying fish and seafood, which cause a great harm to a medical environment and human health, especially to endanger human life, causing headaches and stimulating the eyes and the respiratory system.…”

Section: Introductionmentioning

confidence: 99%

Detection of Trimethylamine Based on a Manganese Tetraphenylporphyrin Optical Waveguide Sensing Element

et al. 2018

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The sensitive detection of trimethylamine has been accomplished by using a homogeneous optical waveguide sensor system. Also the sensor can be easily fabricated by using tetraphenylporphyrin manganese (MnTPP) as sensitive materials to detect different volatile organic compounds (VOC). NMR (H-NMR), field-emission scanning electron microscopy (FESEM), and X-ray photoelectron spectroscopy (XPS), infrared (IR), and ultraviolet-visible (UV-vis) instrumental means were used to characterize its structure. Gas-sensing measurements indicated that the sensing element has shown good selectivity, high sensitivity and a low detection limit level of 0.1 ppm to trimethylamine (TMA) with the presence of interference gases at room temperature. For a range of trimethylamine concentrations from 0.1 to 1000 ppm, the sensor has shown a short response time. Also the response time and recovery time are 1.5 and 50 s, respectively. Simulation experiments (dichloromethane, chloroform and carbon tetrachloride were selected as interference gases) showed little interference with its gas sensing. That may provide an ideal candidate for detecting the freshness of fish and seafood.

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