Rapid and real-time detection of arginine enantiomers by QCM sensor having a Calix[4]arene receptor bearing asymmetric centers

WOS: 000480664200019
PubMed: 31357279
This paper describes the sensing studies of a chiral calix[4]arene receptor (5) having (R)-2-phenylglycinol moiety for arginine enantiomers (D-/L-arginine) by using Quartz Crystal Microbalance (QCM) technique. The initial experiments have revealed that the chiral calix[4]arene 5 coated QCM (CCC-QCM) sensor showed good sensing for arginine enantiomers, such that it has exhibited higher sensing towards D-arginine than that of L-arginine. It has been determined that the sensitivity, limit of detection values of CCC-QCM sensor for the D-/L-arginine solutions as 0.024/0.023 Hz/mu M and 0.38/1.29 mu M, respectively. On the other hand, the racemic mixture studies were optimized using the response surface methodology with central composite design. Consequently, it has been demonstrated that the QCM sensor modification with a calix[4]arene receptor bearing asymmetric centers provided rapid, real-time, sensitive and effective sensing of arginine enantiomers.
Scientific and Technological Research Council of Turkey (TUBITAK-Grant)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [115Z249]; Research Foundation of the Selcuk UniversitySelcuk University [16401003]; Konya, Turkey
We thank the Scientific and Technological Research Council of Turkey (TUBITAK-Grant Number 115Z249) and the Research Foundation of the Selcuk University (SUBAP-Grant Number 16401003), Konya, Turkey and for financial support of this work produced from Farabi Temel's Ph.D. Thesis.