Napredna pretraga

Pregled bibliografske jedinice broj: 626997

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


Benković, Tomislav; Tomišić, Vladislav; Frkanec, Leo; Galić, Nives
ESI MS/MS study of calix[4]arene tryptophan derivative and its metal complexes // XXIII. hrvatski skup kemičara i kemijskih inženjera : Knjiga sažetaka = XXIII Croatian Meeting of Chemists and Chemical Engineers : Book of abstracts ; Simpozij Vladimir Prelog = Symposium Vladimir Prelog / Hadžiev, Andrea ; Blažeković, Zdenko (ur.).
Zagreb: Hrvatsko društvo kemijskih inženjera i tehnologa, 2013. str. 95-95 (poster, domaća recenzija, sažetak, znanstveni)


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

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

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XXIII. hrvatski skup kemičara i kemijskih inženjera : Knjiga sažetaka = XXIII Croatian Meeting of Chemists and Chemical Engineers : Book of abstracts ; Simpozij Vladimir Prelog = Symposium Vladimir Prelog / Hadžiev, Andrea ; Blažeković, Zdenko - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa, 2013, 95-95

ISBN
978-953-6894-50-5

Skup
Hrvatski skup kemičara i kemijskih inženjera (23 ; 2013)

Mjesto i datum
Osijek, Hrvatska, 21.-24.04.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Calixarenes; alkali-metal cations; lanthanides; electrospray; mass spectrometry

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
119-1191342-2960 - Elektroliti i koordinacijske reakcije u otopini (Vladislav Tomišić, )

Ustanove
Prirodoslovno-matematički fakultet, Zagreb