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Titolo:
Development of polyelectrolyte multilayer films and their applications to analytical chemistry (Review)
Autore:
Anzai, J;
Indirizzi:
Tohoku Univ, Grad Sch Pharmaceut Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan Tohoku Univ Sendai Miyagi Japan 9808578 Ku, Sendai, Miyagi 9808578, Japan
Titolo Testata:
BUNSEKI KAGAKU
fascicolo: 9, volume: 50, anno: 2001,
pagine: 585 - 594
SICI:
0525-1931(200109)50:9<585:DOPMFA>2.0.ZU;2-X
Fonte:
ISI
Lingua:
JPN
Soggetto:
LAYER-BY-LAYER; SELF-ASSEMBLY PROCESS; HYDROGEN-PEROXIDE SENSOR; MANNOSE-LABELED ENZYMES; AVIDIN-BIOTIN SYSTEM; IONIC POLYMER LAYERS; THIN-FILMS; GLUCOSE-OXIDASE; MOLECULAR FILMS; SOLID-SURFACE;
Keywords:
polyelectrolyte multilayer film; layer-by-layer deposition; thin film, dye film; protein film; separation and purification;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
107
Recensione:
Indirizzi per estratti:
Indirizzo: Anzai, J Tohoku Univ, Grad Sch Pharmaceut Sci, Aoba Ku, Sendai, Miyagi 9808578, Japan Tohoku Univ Sendai Miyagi Japan 9808578 i, Miyagi 9808578, Japan
Citazione:
J. Anzai, "Development of polyelectrolyte multilayer films and their applications to analytical chemistry (Review)", BUNSEKI KAG, 50(9), 2001, pp. 585-594

Abstract

The development of polyelectrolyte multilayer films (PEM) is reviewed in relation to their applications to analytical chemistry. PEMs are constructedby a layer-by-layer deposition of oppositely charged polyelectrolytes on asolid surface from aqueous solutions. The PEM films are formed through an electrostatic force of attraction between polycation and polyanion. The structure of PEM films depends significantly on the properties of the bathing solution, including the concentration of polyelectrolytes, ionic strength, and pH. High ionic strength solutions usually result in thicker film. It isknown that hydrogen bonding and hydrophobic interactions also play a role as a secondary force in addition to the electrostatic interactions. Functional PEMs have been prepared using charged dyes, metal and inorganic particles, DNA, proteins, and virus. Analytical applications of PEM include coating the inner wall of capillaries for electrophoretic separation, pervaporation films for alcohol/water purification, sensitive layers of gas and humidity sensors, surface modification of functional electrodes, and ion-sensitive PEMs for optical ion sensors. Protein-containing PEMs are finding wide applications to immuno, sensors, enzyme sensors, bioreactors, and bio-fuel cells, in which proteins are still active in the PEM films.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/10/17 alle ore 11:11:59