Title :
Charge Inversion at the Surface by Adsorption of Trivalent Cations on Langmuir Monolayer
Author :
Seok, Sangjun ; Kim, Doseok
Author_Institution :
Dept. of Phys. & Interdiscipl. Program of Integrated Biotechnol., Sogang Univ., Seoul
Abstract :
Infrared-visible sum-frequency generation spectroscopy was used to study cation adsorption and charge inversion behavior at the lipid/water interface of dimyristoylphosphatidic acid (DMPA) monolayer. The alignment of interfacial water molecules was inferred by electric field produced from the adsorbed surface charges at the lipid/water interface, which suggested charge inversion behavior.
Keywords :
Langmuir-Blodgett films; monolayers; positive ions; DMPA monolayer; Langmuir monolayer; cation adsorption; charge inversion; dimyristoylphosphatidic acid; electric field; infrared visible; interfacial water molecules; lipid/water interface; sum frequency generation spectroscopy; trivalent cations; Biomedical optical imaging; Biotechnology; Electrostatics; Laser beams; Lipidomics; Nonlinear optics; Optical surface waves; Resonance; Spectroscopy; Surface emitting lasers;
Conference_Titel :
Lasers and Electro-Optics - Pacific Rim, 2007. CLEO/Pacific Rim 2007. Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-1173-3
Electronic_ISBN :
978-1-4244-1174-0
DOI :
10.1109/CLEOPR.2007.4391639
