synthesis and physico-chemical properties of new tetraethylammonium-based amino acid chiral ionic liquids合成和理化性能的新tetraethylammonium-based氨基酸手性离子液体.pdf

Molecules 2010, 15, 2388-2397; doi:10.3390/molecule OPEN ACCESS molecules ISSN 1420-3049 /journal/molecules Article Synthesis and Physico-Chemical Properties of New Tetraethylammonium-Based Amino Acid Chiral Ionic Liquids Mohd Basyaruddin Abdul Rahman 1,2,*, Khairulazhar Jumbri 1, Mahiran Basri 1, 1 1 3 Emilia Abdulmalek , Kamaliah Sirat and Abu Bakar Salleh 1 Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; E-Mails: khairulazhar_evo@ (K.J.); mahiran@.my (M.B.); emilia@.my (E.A.); kamaliah@.my (K.S.) 2 Structural Biology Research Centre, Malaysia Genome Institute, UKM-MTDC Smart Technology Centre, 43600 UKM Bangi, Selangor, Malaysia 3 Laboratory of Industrial Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; E-Mail: abubakar@.my (A.B.S.) * Author to whom correspondence should be addressed; E-Mail: basya@.my; Tel.: +603 8946 6798; Fax: +603 8943 2508. Received: 12 February 2010; in revised form: 15 March 2010 / Accepted: 22 March 2010 / Published: 5 April 2010 Abstract: This paper reports the synthesis of a series of new tetraethylammonium-based amino acid chiral ionic liquids (CILs). Their physico-chemical properties, including melting point, thermal stability, viscosity and ionic conductivity, have been comprehensively studied. The obtained results indicated that the decomposition for these