05. Fakülteler

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Browsing 05. Fakülteler by Subject "1-Phenylethylamine"

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    Citation - WoS: 16
    Citation - Scopus: 15
    Qcm Sensors Coated With Calix[4]arenes Bearing Sensitive Chiral Moieties for Chiral Discrimination of 1-Phenylethylamine Enantiomers
    (SPRINGER, 2019) Özçelik, Egemen; Temel, Farabi; Erdemir, Serkan; Tabakcı, Begüm; Tabakcı, Mustafa
    This article describes the enantiomeric discrimination properties of new chiral calix[4]arene derivatives bearing (S)-/(R)-1-phenylethylamine moieties (5a and 5b, respectively) towards the 1-phenylethylamine enantiomers on QCM surface. Initial experiments demonstrated that the 5b coated QCM sensor was the most effective sensing material for enantiomeric discrimination of (R)-/(S)-1-phenylethylamine by exhibiting much more sensing ability towards (R)-enantiomer than (S)-enantiomer. Sensitivity, detection limit and time constant of the 5b coated QCM sensor has been were calculated as 0.082 Hz/mu M, 2.7 mu M, and 319.2 s, respectively. Additionally, effects of calixarene content and different coating technique on enantiomeric discrimination, and Langmuir and Freundlich isotherms of the sensing results also were studied. As a result, it has been demonstrated that the coating of QCM sensor with a chiral calix[4]arene (5b) having (S)-1-phenylethylamine moieties provides substantially enantiomeric discrimination of 1-phenylethylamine enantiomers.