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Teses / dissertações sobre o tema "Films de Langmuir de perfluoroalkylalcanes"

Autor: Grafiati

Publicado: 26 de outubro de 2024

Última modificação: 31 de julho de 2025

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1

Silva, Pedro Manuel Ribeiro. "Langmuir Films of Perfluoroalkylalkanes : Multiscale Insights on Molecular Structure, Mixing, and Subphase Deformability Effects." Electronic Thesis or Diss., Sorbonne université, 2024. http://www.theses.fr/2024SORUS215.

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Les perfluoroalkylalcanes (PFAA ; CnF2n+1CmH2m+1 ; FnHm) sont des molécules diblocs formées par des blocs hydrogénés (CH) et perfluorés (CF). Les deux sont hydrophobes et mutuellement phobiques. Bien qu'ils ne possèdent pas de groupe polaire, ces tensioactifs primitifs forment des films de Langmuir sur l'eau ou des substrats hydrophiles. Les films comprennent des hémimicelles monodispersées bien définies, ordonnées de manière hexagonale, comme le montrent les expériences de microscopie à force atomique (AFM) et de diffraction des rayons X à incidence rasante. Il a été observé que le diamètre d

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2

Colbrook, Richard. "Pyroelectric Langmuir-Blodgett films." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257662.

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3

Ou, Shih-hong. "Non-centrosymmetric Langmuir films." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1060358516.

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4

Yu, Lisha. "Vibrational spectroscopy of diamond films, Langmuir and Langmuir-Blodgett films and aromatic polyethers." Case Western Reserve University School of Graduate Studies / OhioLINK, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=case1056553553.

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5

Romualdo, Torres Gemma. "Systèmes hybrides en films de Langmuir et Langmuir-Blodgett." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2002. http://tel.archives-ouvertes.fr/tel-00815388.

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Ce travail porte sur la formation et la caractérisation de nouveaux systèmes organiques-inorganiques par l'utilisation de films de Langmuir et de la technique de Langmuir-Blodgett. Plusieurs voies ont ainsi été explorées afin d'obtenir des films minces hybrides aux propriétés multiples, en particulier magnétiques. L'utilisation de l'interaction entre monocouches cationiques et des anions présents en sous-phase a ainsi permis l'organisation de différents polyanions inorganiques en structure lamellaire. Cette stratégie a ensuite été généralisée au cas de colloïdes de Bleu de Prusse, composés bim

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6

Jones, Carole A. "Pyroelectricity in Langmuir-Blodgett films." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6784/.

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The fabrication of pyroelectric devices using the Langmuir-Blodgett (LB) technique is described. Studies of a wide range of materials are reported; however, the thesis concentrates on electrical and structural investigations of two specific alternate layer films: 22-tricosenoic acid/l-docosylamine and 22-tricosenoic acid/4-octadecylaniline. The latter system possesses a pyroelectric coefficient of 0.65 nCcm(^-2)K(^-1), representing the largest reported value, to date, for an LB film. The pyroelectric figure of merit (p/e(^1)(_T)) of such films is approximately 0.22 nCcm(^-2)K(^-1), which is co

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7

Amiri, M. A. "Optically nonlinear Langmuir Blodgett films." Thesis, Cranfield University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273468.

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8

Oliveira, Junior Osvaldo Novais de. "Electrical properties of Langmuir monolayers and deposited Langmuir-Blodgett films." Thesis, Bangor University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236716.

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9

Wang, Ji. "LANGMUIR LAYERS AND LANGMUIR/SCHAEFER FILMS OF BENT-CORE MOLECULES." Kent State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=kent1194385768.

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10

Constantino, Carlos José Leopoldo. "Filmes de Langmuir e Langmuir-Blodgett de ligninas." Universidade de São Paulo, 1995. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-18062008-083333/.

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Filmes de Langmuir e Langmuir-Blodgett (LB) foram fabricados a partir de ligninas de bagaço de cana-de-açúcar e da Pinus caribaea hondurensis, extraídas via processo organossolve. Obteve-se nove tipos de lignina de pinus, sendo que cada uma foi extraída com um sol vente diferente, e seis tipos de lignina de cana, as quais passaram por um fracionamento, diminuindo sua polidispersividade. Os filmes de Langmuir foram fabricados sobre subfases de água ultrapura e caracterizados por medidas de pressão e potencial de superfície. Em todos os casos constatou-se a formação de agregados não monomolecula

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11

Constantino, Carlos José Leopoldo. "Filmes de Langmuir e Langmuir-Blodgett (LB) de ligninas." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-18112014-162235/.

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Filmes de Langmuir e Langmuir-Blodgett (LB) de ligninas extraídas do bagaço de cana-de-açúcar, via processo organossolve, foram fabricados. As isotermas de pressão revelaram uma área para a seção média da lignina em torno de 100 &#197 para a monocamada condensada, enquanto a modelagem a partir dos espectros elipsométricos indicou uma espessura por camada de cerca 60 &#197 para os filmes LB. Porém a deposição não se mostrou homogênea sobre toda a superfície do substrato como observado pelas medidas de microscopia de força atômica (AFM), de forma que filmes mais homogêneos foram obtidos a partir

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12

Davis, Frank. "Langmuir-Blodgett films of preformed copolymers." Thesis, Lancaster University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306423.

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13

Burrows, P. E. "Electron Transport in Langmuir-Blodgett films." Thesis, Queen Mary, University of London, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531005.

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14

Cresswell, J. P. "Waveguiding in electrooptic Langmuir-Blodgett films." Thesis, Durham University, 1992. http://etheses.dur.ac.uk/6142/.

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This thesis describes work on the waveguiding and second-order nonlinear optics of Langmuir-Blodgett (LB) films. A number of new monomeric materials are assessed for their LB deposition and their second-order nonlinear properties. Both the Pockels effect and second harmonic generation are studied. One new chromophore, diphenyl butadiyne is shown to possess exceptional nonlinear effects in monolayer form with x((^2))(-w; w, 0) = 2.7 x 10(^-10) mV(^-1) A novel aminonitrostilbene carboxylic acid with x((^2))(-w;w,0) = 1.43 x 10(^-10) m V(^-1) is also described. Polymeric LB materials have been fo

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15

Green, Christopher A. "Covalent immobilisation of Langmuir-Blodgett films." Thesis, University of Salford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386420.

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16

Fernandes, Anwesha Nahavita. "Langmuir-Blodgett films of functional nanomaterials." Thesis, University of Sheffield, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442969.

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17

Kim, Kwang Soo. "Computer simulation of Langmuir-Blodgett films." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358629.

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18

Cruz, Cláudia Bonardi Kniphoff da. "Potencial de superfície de filmes de Langmuir e Langmuir-Blodgett." Universidade de São Paulo, 1995. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-15052009-120635/.

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Resultados antigos de potencial de superfície de filmes de Langmuir não eram reprodutíveis, devido B presença de impurezas na subfase aquosa sobre a qual os filmes se formavam. Dados recentes para o ácido esteárico, no entanto, mostram um comportamento reprodutível Neste trabalho, foi promovida com sucesso uma recaracterização através de medidas de pressão de superfície (II) e potencial de superfície (&#916V) de compostos alifáticos simples (álcoois, ésteres, ácido e amina), obtidos sobre subfases devidamente purificadas. Os resultados obtidos são inéditos e mostram que o potencial de superfíc

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19

Tanazefti, Kaïs. "Caractérisation de films de Langmuir et de Langmuir-Blodgett de molécules mésogènes." Paris 5, 1998. http://www.theses.fr/1998PA055020.

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Notre travail concerne l'étude des modes d'organisation de molécules mésogenes de conformation bolique ayant un cœur central hydrophobe, forme de trois ou quatre noyaux phenyls, auquel sont attachées de longues chaines hydrocarbonées. La flexibilité du cœur des molécules et la longueur des chaines peuvent être modifiées. L'objectif de notre étude est de comparer l'arrangement moléculaire entre les phases à deux dimensions et les phases trois dimensions. Les composes mésogenes étudiés s'étalent spontanément a la surface de l'eau sous forme de films appelés films de langmuir. La première partie

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20

Júnior, Antonio Riul. "Filmes de Langmuir e Langmuir-Blodgett de polianilina processada com ácidos funcionalizados." Universidade de São Paulo, 1995. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-08112013-151141/.

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Filmes de Langmuir e Langmuir-Blodgett (LB) foram produzidos a partir da polianilina não substituída, que se tornou processável e solúvel em clorofórmio apos ser dopada com ácidos funcionalizados. Para atingir condições otimizadas de formação e deposição dos filmes, foi realizado um estudo criterioso empregando vários ácidos funcionalizados: canfor sulfônico (CSA), dodecilbenzeno sulfônico (DBSA) e tolueno sulfônico (TSA); e também os solventes e plastificantes N-metilpirrolidinona (NMP) e m-cresol. Soluções de polianilina de alta massa molar processada com estes ácidos foram depositadas sobre

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21

ZANONI, RAYMOND. "BRILLOUIN SPECTROSCOPY OF LANGMUIR-BLODGETT FILMS (THIN FILMS, ELASTIC CONSTANTS)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183852.

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The goal of this dissertation has been to develop techniques in order to use Brillouin spectroscopy as a tool for studying the elastic properties of thin films on a scale of ≃100 Å. In order to develop that capability we have built a tandem multi-pass Fabry-Perot interferometer, and that interferometer was used to study the elastic properties of Langmuir-Blodgett films. These films were chosen because they can be deposited one molecular layer at a time. As a result of these investigations we have measured the density and elastic constants of the Langmuir-Blodgett film cadmium arachidate. Sampl

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22

Portus, Dan. "Langmuir-Blodgett films of porphyrins and phthalocyanines." Thesis, Cranfield University, 2002. http://hdl.handle.net/1826/3372.

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Phthalocyanines and porphyrins have been studied for many years as bulk, thick and thin films. Their use in Langmuir and Langmuir-Blodgett films is governed their peripheral substituents. These can enhance or reduce their ability to form "quality" ultra-thin films. There are a number of potential and current applications for thin films porphyrins and phthalocyanines, which include CD-R discs and gas-sensors. It is latter that this PhD has focussed on. Ultra-thin films of phthalocyanines, porphyrins and a porphyrin/phthalocyanine hybrid dye were deposited onto glass microscope slides, gold-coat

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23

Travers, Paul James. "Langmuir-blodgett films for second harmonic generation." Thesis, Coventry University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254209.

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24

Holcroft, B. "Novel electronic devices incorporating Langmuir-Blodgett films." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235171.

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25

Kalita, N. "The Pockels' effect in Langmuir-Blodgett films." Thesis, Durham University, 1991. http://etheses.dur.ac.uk/6072/.

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Simple, compact and inexpensive automated apparatus for recording surface plasmon resonance and the Pockels (or linear electro-optic) effect in Langmuir-Blodgett films has been used to estimate the thickness, permittivity and second order non linear susceptibility X(^(2))(_xxx)(-w;w,0) of several novel Langmuir-Blodgett film-forming materials. The results agree with estimates of nonlinear susceptibility obtained by second-harmonic generation. The materials synthesised at Durham were all functionalised diaryl alkynes of the general formula CH(_3)(CH(_2))(_n)(Py(^+))C=C(Ph-R), wherein n =17 or 2

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26

Neal, D. B. "Langmuir-Blodgett films for non-linear optics." Thesis, Durham University, 1987. http://etheses.dur.ac.uk/9527/.

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In recent years there has been considerable interest in media which display significant non-linear optical properties; the telecommunications industry may exploit chin films of such materials for signal processing applications. The Langmuir-Blodgett (LB) technique provides a means of depositing organic layers of a precisely defined thickness. Moreover, by alternating layers of different materials, supermolecular arrays may be fabricated in which there is no centrosymmetry, and therefore the second-order non-linearity of the constituent molecules may be exploited. An investigation of the proper

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27

Simmons, John M. "Langmuir-Blodgett films of some novel phthalocyanines." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280973.

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28

Darby, John Edward. "Semiconducting Langmuir-Blodgett films as gas sensors." Thesis, University of Kent, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293551.

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29

Hao, Shuang. "Josephson tunnel junctions using Langmuir-Blodgett films." Thesis, University of Southampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252717.

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30

Leeson, Paul. "Langmuir-Blodgett films for second harmonic generation." Thesis, Cranfield University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323931.

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31

Barrell, K. J. "The Langmuir-Blodgett films of conjugated pigments." Thesis, University of the West of England, Bristol, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234286.

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32

Das, Abhijna [Verfasser], Günter [Akademischer Betreuer] Reiter, and Renate [Akademischer Betreuer] Reiter. "Controlling phase transitions in Langmuir polymer films." Freiburg : Universität, 2020. http://d-nb.info/1218464011/34.

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33

Tucker, George. "Formation of Labyrinth Patterns in Langmuir Films." Scholarship @ Claremont, 2008. https://scholarship.claremont.edu/hmc_theses/215.

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A Langmuir film is a molecularly thin fluid layer on the surface of a subfluid. When dipole dipole forces are negligible, bounded films relax to energy minimizing circular domains. We investigate numerically the case where dipole dipole interactions are strong enough to deform the domain into highly distorted labyrinth type patterns. Our numerical method is designed to achieve higher accuracy and better stability than previous work and exploits an analytic formulation that removes a singularity in the dipole dipole forces without resorting to a small cutoff parameter. We calculate the relaxati

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34

Júnior, Antonio Riul. "Filmes de Langmuir e Langmuir-Blodgett de Polianilinas." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-03052010-171319/.

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Explorou-se a caracterização de monocamadas e filmes LB de polianilina (PANi), e um oligômero de polianilina, chamado aqui de 16-mero, com estearato de cádmio (CdSt). A análise dos filmes de Langmuir indicou que possivelmente não há mistura em nível molecular da PANi e do 16-mero com CdSt, ainda que a quantidade adicionada em solução de polímero ou oligômero influencie a estabilidade das monocamadas. Utilizou-se UV-vis, FTIR, difração de raios-X, condutividade elétrica, elipsometria, microscopia óptica e potencial de superficie para caracterização dos filmes LB. Os resultados de UV-vis indicar

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35

Embs, Frank, Dirk Funhoff, André Laschewsky, et al. "Preformed polymers for Langmuir-Blodgett films- molecular concepts." Universität Potsdam, 1991. http://opus.kobv.de/ubp/volltexte/2008/1719/.

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The use of preformed polymers for the preparation of Langmuir-Blodgett (LB) multilayers is reviewed. Principles for polymer self-organization are outlined and the appropriate molecular designs are discussed. Recent developments in the different classes of polymers for LB multilayers are presented, and their outstanding properties highlighted.

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36

Young, C. J. "Gas sensitivity of Langmuir-Blodgett films of porphyrins." Thesis, Lancaster University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371069.

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37

Parry, David A. "Optical gas sensing using Langmuir-Blodgett thin films." Thesis, Coventry University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241840.

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38

Stone, Peter Jeffrey William. "Langmuir-Blodgett films for non-linear optical applications." Thesis, Coventry University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259613.

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39

Howarth, Vaughan Antony. "A study of Langmuir-Blodgett films of valinomycin." Thesis, Durham University, 1989. http://etheses.dur.ac.uk/6518/.

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The deposition and characterisation of Langmuir-Blodgett (LB) films containing the ionophore valinomycin are described. In particular, the thesis concentrates on two specific mixed LB systems incorporating the ionophore, namely, arachidic acid/valinomycin and L-a-phosphatidic acid dipalmitoyl (DPPA)/valinomycin. The extremely sensitive spectroscopic technique of attenuated total reflection (ATR) Fourier transform infrared (FTRIR) spectroscopy is used to investigate the interaction of these ultra-thin LB structures with aqueous solutions containing potassium ions. It is shown that LB layers of

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40

Fowler, M. T. "Optical and photoelectrical applications of Langmuir Blodgett films." Thesis, Durham University, 1985. http://etheses.dur.ac.uk/7116/.

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The Langmuir-Blodgett (LB) technique is well known for the deposition of thin, uniform films of precisely defined thickness. These films can he used in electronic devices as an active layer, or in a passive role as insulators. Results are presented of investigations using films of both types. Novel LB films of a merocyanine dye have been developed for use as a spectral sensitiser, and films of phthalocyanine used as insulators for the enhancement of the electroluminescent (EL) properties of a metal-semiconductor structure. The merocyanine dye used has none of the clear amphiphilic molecular su

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41

Baker, S. "Phthalocyanine Langmuir-Blodgett films and their associated devices." Thesis, Durham University, 1985. http://etheses.dur.ac.uk/7589/.

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Interest in the Langmuir-Blodgett (LB) technique has led to a number of investigations into different types of materials that can be deposited in the form of monolayers. For example, as well as the classic long Cham fatty acids and alcohols, materials such as polymerisable molecules, aromatic hydrocarbons and dye substances can now all be produced in monomolecular form. Unfortunately, few of these materials yet fulfil the requirements of mechanical and thermal stability that will be necessary if LB films are to be used commercially. This work has dealt with the use of phthalocyanine, a substan

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42

Pearson, C. "Langmuir-Blodgett films of organic charge-transfer complexes." Thesis, Durham University, 1996. http://etheses.dur.ac.uk/5390/.

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This thesis is concerned with the preparation of floating films of electrically conductive organic charge-transfer complexes and their subsequent transfer to solid substrates by the Langmuir-Blodgett (LB) technique. Characterisation of the morphology (using ellipsometry, surface profiling, optical and scanning electron microscopy, energy dispersive spectroscopy and optical absorption spectroscopy) and electrical properties (at room temperature and low temperature) of the resulting multilayer structures is discussed. Three different systems were investigated: (i) mixed films containing the long

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43

ROMERO, WENNDY STEFFANNÍA PANTOJA. "LANGMUIR FILMS OF FATTY ACID MONOESTERS OF GLYCEROL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2016. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=36991@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>Ésteres de glicerol derivados de ácidos graxos são surfactantes não iônicos com aplicação como lubrificantes, agentes anti-estáticos, auxiliares de processamento, plastificantes, anti-espumas, agentes de dispersão e de outras aplicações que requerem atividade bifuncional. Os monoésteres de glicerol derivados de ácidos graxos naturais, tais como ácido octanóico (C menos 8), decanóico (C menos 10) e octadecanóico (C menos

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44

NASSOY, PIERRE. "Effets de segregation dans les films de langmuir." Paris 6, 1996. http://www.theses.fr/1996PA066307.

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Les effets de segregation a deux dimensions dans les films monomoleculaires d'amphiphiles etales a l'interface eau/air ont ete abordes sous trois angles differents. Dans une premiere partie, nous avons considere des monocouches de langmuir d'amphiphiles fluores, assimilables a des batonnets rigides. Leur diagramme de phase a des caracteristiques inhabituelles par rapport a celui des tensio-actifs a chaine hydrocarbonee. Une compression mecanique conduit a une seule transition de phase du premier ordre de type gaz/solide. La phase solide, dont la structure est deduite d'experiences de diffracti

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45

Antoine, Claire. "Composés d'insertion inorganiques en films de Langmuir-Blodgett." Paris 11, 1989. http://www.theses.fr/1989PA112328.

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L'étude des composés organiques ou minéraux en films minces a montré qu'ils présentaient des propriétés tout à fait originales par rapport aux composés massifs. Le présent travail vise à l'obtention de semi-conducteurs minéraux en films ultraminces, en particulier des sulfures métalliques de mercure et de cadmium. La synthèse est réalisée dans des conditions douces au sein d'une matrice organique réalisée grâce à la technique de Langmuir-Blodgett, par diffusions successives des réactifs minéraux. La formation des sels, contrôlée géométriquement par la matrice d'accueil, est suivie par spectros

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46

Ouattara, Mariane. "Polymères amphiphiles : des films Langmuir-Blodgett au transistor." Doctoral thesis, Université Laval, 2016. http://hdl.handle.net/20.500.11794/26569.

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Au cours des 25 dernières années, l’intérêt pour l’utilisation de semi-conducteurs organiques comme couche active dans les transistors à effet de champ (TOECs), à la place du silicium, a crû spectaculairement. L’utilisation de polymères π-conjugués dans ce domaine a grandement entraîné cet essor. Au fil du temps, on observe une amélioration des performances atteintes contribuant à l’émergence de nouveaux matériaux. Par contre, différents paramètres tels que la mobilité et la stabilité demeurent moins impressionnants que ceux des semi-conducteurs à base de matériaux inorganiques. De meilleurs r

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47

L'HEVEDER, CLARISSE. "Etude dynamique et rheologique des films de langmuir." Paris 6, 1999. http://www.theses.fr/1999PA066308.

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Cette these presente, en premiere partie, un nouveau type de microscope a angle de brewster. Le principe de cet instrument est base sur les proprietes de reflectivite des interfaces. C'est une technique tres performante pour l'etude des films de langmuir : elle permet une visualisation directe des coexistences de phases dans les films. Cet instrument permet egalement d'observer l'anisotropie optique des films. Le nouveau microscope ouvre la voie a l'exploration d'un nouveau domaine de recherche. En effet, il autorise la realisation d'etudes dynamiques sur les films de langmuir. La seconde part

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48

Lecourt, Boris. "Ellipsométrie spectroscopique conventionnelle et généralisée de films moléculaires ultraminces : bases théoriques et instrumentales, application à l'étude de films Langmuir-Blodgett et de films autosupportés." Bordeaux 1, 1998. http://www.theses.fr/1998BOR10580.

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Cette these est consacree au developpement et a l'application de methodes d'ellipsometrie conventionnelle et generalisee pour l'etude de films moleculaires ultraminces. Dans la premiere partie sont exposes les bases de l'ellipsometrie et en particulier les problemes de modelisation et d'inversion des donnees experimentales. La deuxieme partie est dediee aux techniques instrumentales de mesures realisees sur un ellipsometre a polariseur tournant (gesp5) de la societe sopra. La troisieme partie est consacree a la determination des constantes optiques de films autosupportes ultraminces de surfact

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49

Romualdo, Torres Gemma. "Sistemas híbridos orgánicos-inorgánicos en films de Langmuir-Blodgett." Doctoral thesis, Universitat de València, 2002. http://hdl.handle.net/10803/10274.

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ÉCe travail porte sur la formation et la caractérisation de nouveaux systèmes organiques-inorganiques par l'utilisation de films de Langmuir et de la technique de Langmuir-Blodgett. Plusieurs voies ont ainsi été explorées afin d'obtenir des films minces hybrides aux propriétés multiples, en particulier magnétiques. L'utilisation de l'interaction entre monocouches cationiques et des anions présents en sous-phase a ainsi permis l'organisation de différents polyanions inorganiques en structure lamellaire. Cette stratégie a ensuite été généralisée au cas de colloïdes de Bleu de Prusse, composés bi

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50

Wilde, Jason N. "Optical sensing of organic vapours using Langmuir-Blodgett films." Thesis, Durham University, 1998. http://etheses.dur.ac.uk/4763/.

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This thesis describes hydrocarbon vapour sensing using Langmuir-Blodgett films prepared from: a co-ordination polymer; substituted phthalocyanines containing copper and zinc as the central metal ions; and a polysiloxane. The physical and chemical properties of the co-ordination polymer, 5,5'-methylenebis (N- hexadecylsalicylidenamine), at the air water interface were investigated using Brewster angle microscopy and surface pressure versus area measurements. Langmuir-Blodgett films were built-up on a variety of substrates. The addition of copper acetate to the subphase caused a change in both t

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