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Titolo:
Influence of transfer promoters on the deposition and wettability characteristics of copper tetra-tert-butyl phthalocyanine Langmuir-Blodgett films
Autore:
Ku, IH; Lee, YL; Chang, CH; Yang, YM; Maa, JR;
Indirizzi:
Natl Cheng Kung Univ, Dept Chem Engn, Tainan 70101, Taiwan Natl Cheng KungUniv Tainan Taiwan 70101 Chem Engn, Tainan 70101, Taiwan Chia Nan Univ Pharm & Sci, Dept Appl Chem, Tainan 71701, Taiwan Chia Nan Univ Pharm & Sci Tainan Taiwan 71701 Chem, Tainan 71701, Taiwan
Titolo Testata:
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
fascicolo: 3, volume: 191, anno: 2001,
pagine: 223 - 231
SICI:
0927-7757(20011115)191:3<223:IOTPOT>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
ASYMMETRICALLY SUBSTITUTED PHTHALOCYANINE; ELECTRICAL-CONDUCTIVITY CHANGES; THIN-FILMS; GAS SENSOR; RESPONSE CHARACTERISTICS; SENSITIVE PROPERTIES; NO2; MORPHOLOGY; MONOLAYERS; MODEL;
Keywords:
Langmuir-Blodgett film; monolayer; phthalocyanine; transfer promoter; wettability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Chang, CH Natl Cheng Kung Univ, Dept Chem Engn, Tainan 70101, Taiwan Natl Cheng Kung Univ Tainan Taiwan 70101 Tainan 70101, Taiwan
Citazione:
I.H. Ku et al., "Influence of transfer promoters on the deposition and wettability characteristics of copper tetra-tert-butyl phthalocyanine Langmuir-Blodgett films", COLL SURF A, 191(3), 2001, pp. 223-231

Abstract

This study investigated the influence of three transfer promoters on the deposition and wettability characteristics of copper tetra-tert-butyl phthalocyanine (CuTTBPc) Langmuir-Blodgett (L-B) films. With the addition of transfer promoters, such as stearyl alcohol, stearamide, and arachidic acid, two transitions corresponding to monolayer collapse were observed in the surface pressure-area isotherms of mixed CuTTBPc/transfer promoter monolayers at the air/water interface. Nevertheless, the expected enhanced stability ofa CuTTBPc monolayer in the presence of transfer promoters did not reflect in the monolayer area relaxation curves obtained at constant surface pressures. The transfer ratio for the deposition of a CuTTBPc L-B film on a glasssubstrate was close to one, and thus the addition of transfer promoters showed little improvement in the deposition. On a gold-coated glass substrate, however, the deposition of a CuTTBPc L-B film was considerably improved by the existence of arachidic acid. Surprisingly, the deposition was not improved with the addition of stearyl alcohol or stearamide. Moreover, the presence of transfer promoters did not show significant influence on the wettability characteristics of the mixed CuTTBPc/transfer promoter L-B films on glass or gold-coated glass substrates except for the case of arachidic acid. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 10:06:04