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ESI MS/MS study of calix[4]arene tryptophan derivative and its metal complexes (CROSBI ID 596247)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | domaća recenzija

Benković, Tomislav ; Tomišić, Vladislav ; Frkanec, Leo ; Galić, Nives ESI MS/MS study of calix[4]arene tryptophan derivative and its metal complexes // 23. Hrvatski skup kemičara i kemijskih inženjera : knjiga sažetaka / Hadžiev, Andrea ; Blažeković, Zdenko (ur.). Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2013. str. 95-95

Podaci o odgovornosti

Benković, Tomislav ; Tomišić, Vladislav ; Frkanec, Leo ; Galić, Nives

engleski

ESI MS/MS study of calix[4]arene tryptophan derivative and its metal complexes

The peptidocalixarene 1 bearing tryptophan subunits at the lower rim 1 and its complexes with alkali-metal (Li+, Na+, K+, Rb+, Cs+) and selected lanthanide cations (La3+, Ce3+, Eu3+, Yb3+) were analyzed by ESI MS. The influences of the solvent (acetonitrile, methanol, addition of formic acid or sodium acetate) and the calixarene:cation molar ratio on signal intensities were investigated. Comprehensive MS/MS analyses of all singly and doubly charged ions of 1 and its complexes were performed, and the fragmentation pathways were proposed. An inductive cleavage was observed during dissociation of protonated ions, whereas the presence of alkali-metal or lanthanide cations caused homolytic cleavage and formation of radical cations. The results of MS analyses were in accordance with those obtained by other techniques (spectrophotometric, potentiometric, and conductometric titrations). The MS/MS experiments could be used as fast and sensitive method for prediction of relative stabilities of calixarene complexes with metal ions.

calixarenes ; alkali-metal cations ; lanthanides ; electrospray ; mass spectrometry

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Podaci o prilogu

95-95.

2013.

objavljeno

Podaci o matičnoj publikaciji

23. Hrvatski skup kemičara i kemijskih inženjera : knjiga sažetaka

Hadžiev, Andrea ; Blažeković, Zdenko

Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI)

978-953-6894-50-5

Podaci o skupu

23. HRVATSKI SKUP KEMIČARA I KEMIJSKIH INŽENJERA

poster

21.04.2013-24.04.2013

Osijek, Hrvatska

Povezanost rada

Kemija

Poveznice