Amperometric Adhesion Signals of Liposomes, Cells and Droplets

Ivošević DeNardis, Nadica; Žutić, Vera; Svetličić, Vesna; Frkanec, Ruža (2009) Amperometric Adhesion Signals of Liposomes, Cells and Droplets. Chemical and Biochemical Engeenering Quartely (CABEQ), 23 (1). pp. 87-92. ISSN 0352-9568

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Abstract

Individual soft microparticles (liposomes, living cells and organic droplets) in aqueous media are characterized by their adhesion signals using amperometry at the dropping mercury electrode. We confirmed that the general mechanism established for adhesion of hydrocarbon droplets and cells is valid as well for liposome adhesion within a wide range of surface charge densities. Incidents and shape of adhesion signals in liposome suspensions reflect liposome polydispersity, surface charge density and properties of phospholipid head group. Major distinction in adhesion behavior of liposomes when compared to organic droplets was identified as: (i) different values of critical interfacial tensions of adhesion at the positively and the negatively charged electrode, and (ii) appearance of signals revealing the specific interactions of phospholipid polar head groups with the electrode.

Item Type:	Article
Uncontrolled Keywords:	Amperometric adhesion signals; DOPC liposomes; dropping mercury electrode; microparticles; PS liposomes
Subjects:	NATURAL SCIENCES > Chemistry NATURAL SCIENCES > Geophysics
Divisions:	Division for Marine and Enviromental Research
Projects:	Project title Project leader Project code Project type Nove formulacije antigena i imunostimulatora - utjecaj na imunoreakciju [217220] Ruža Frkanec 021-0212432-2431 MZOS Površinske sile na atomskoj skali u istraživanju mora i nanotehnologiji [45656] Vesna Svetličić 098-0982934-2744 MZOS
Depositing User:	Nadica Ivošević DeNardis
Date Deposited:	11 Dec 2013 09:07
URI:	http://fulir.irb.hr/id/eprint/1168

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