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Abstract
In this work, experimental titration curves of poly-L-giutamic acid are reported at two ionic strengths (0.1 and
0.5 M NaCI) at 25°C. A simple extension of the counterion condensation theory is proposed in order to
account for the pH-induced conformational transition. The model assumes a variable distance between titrable
sites in the charge induced transition from o-helix to extended coil structure. Calculations are in good
agreement with experimental results and show the right change of concavity in titration curves with respect to
models that assume constant distance between titrable sites.
0.5 M NaCI) at 25°C. A simple extension of the counterion condensation theory is proposed in order to
account for the pH-induced conformational transition. The model assumes a variable distance between titrable
sites in the charge induced transition from o-helix to extended coil structure. Calculations are in good
agreement with experimental results and show the right change of concavity in titration curves with respect to
models that assume constant distance between titrable sites.
Originalsprog | Engelsk |
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Titel | Atti del Convegno GRICU 2004 (Nuove Frontiere di Applicazione delle Metodologie dell’Ingegneria Chimica) - Proceedings of the congress GRICU 2004 - Porto d'Ischia (Naples, Italy) |
Vol/bind | 1 |
Publikationsdato | sep. 2004 |
Sider | 373-376 |
ISBN (Trykt) | 88 87030 80 4 |
Status | Udgivet - sep. 2004 |
Udgivet eksternt | Ja |
Begivenhed | Convegno GRICU 2004 - Porto d'Ischia, Italien Varighed: 12 sep. 2004 → 15 sep. 2004 |
Konference
Konference | Convegno GRICU 2004 |
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Land/Område | Italien |
By | Porto d'Ischia |
Periode | 12/09/2004 → 15/09/2004 |
Fingeraftryk
Dyk ned i forskningsemnerne om 'A molecular thermodynamic model for potentiometric titration of poly-L-glutamic acid'. Sammen danner de et unikt fingeraftryk.Aktiviteter
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Convegno GRICU 2004
Marco Maschietti (Deltager)
12 sep. 2004 → 15 sep. 2004Aktivitet: Deltagelse i faglig begivenhed › Organisering af eller deltagelse i konference
Publikation
- 1 Poster
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A molecular thermodynamic model for potentiometric titration of poly-L-glutamic acid
Marrelli, L. & Maschietti, M., 2004.Publikation: Konferencebidrag uden forlag/tidsskrift › Poster › Forskning