Investigation of noncovalent complexes between β-cyclodextrin and polyamide acids containing N-methylpyrrole and N-methylimidazole by electrospray ionization mass spectrometry | Zendy

Huihui Li | Zendy; Jiang Zhou | Zendy; Feili Tang | Zendy; Gu Yuan | Zendy

Open Access

Investigation of noncovalent complexes between β-cyclodextrin and polyamide acids containing N-methylpyrrole and N-methylimidazole by electrospray ionization mass spectrometry

Author(s) -

Huihui Li,

Jiang Zhou,

Feili Tang,

Gu Yuan

Publication year - 2005

Publication title -

journal of the american society for mass spectrometry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.961

H-Index - 127

eISSN - 1879-1123

pISSN - 1044-0305

DOI - 10.1016/j.jasms.2005.08.011

Subject(s) - chemistry , electrospray ionization , polyamide , non covalent interactions , mass spectrometry , cyclodextrin , electrospray , stoichiometry , chromatography , polymer chemistry , stereochemistry , organic chemistry , molecule , hydrogen bond

Electrospray ionization (ESI) mass spectrometry was utilized to investigate noncovalent complexes between beta-cyclodextrin (beta-CD) and five novel polyamide acids containing N-methylpyrrole and N-methylimidazole. The 1:1 binding mode was specified by examining the binding stoichiometry from ESI mass spectra. It found that polyamide acids with beta-CD have binding affinities in the order: ImImImbetaCOOH > ImPyImbetaCOOH > ImPyPybetaCOOH > PyPyPybetaCOOH > NO(2)PyPyPybetaCOOH. The method gives, simultaneously, the binding constants between beta-CD and polyamide acids based on a novel linear equation.

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