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Dissertations / Theses on the topic 'Fluorenes'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 February 2023

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1

Kommanaboyina, Srikanth. "Conjugated polymers based on 4-substituted fluorenes and fluorenones." Thesis, Bangor University, 2016. https://research.bangor.ac.uk/portal/en/theses/conjugated-polymers-based-on-4substituted-fluorenes-and-fluorenones(60481bb5-57cc-4ca9-9f65-2e3df4c67354).html.

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Organic electronics is fastly growing field of science and technology and semiconducting conjugated polymers are playing a significant role for the advancement of optoelectronic device applications. Photoluminescent and electroluminescent conjugated polymers made scientific and technological profound growth a wide range of light-emitting applications. Polyfluorenes is one of the most important class of luminescent materials with bright blue emission, thermal and environment stability and high quantum efficiency and tunable properties though modifications and copolymerisation with a great poten
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2

McLean, Aaron W. "Synthesis and structural study of 9-(alkylphenyl)-9-fluorenols, 9-(alkylphenyl)fluorenes, alkyl-9-fluorenylsulfones, and N-(o-alkylphenyl)carbazoles /." Available to subscribers only, 2008. http://proquest.umi.com/pqdweb?did=1650505821&sid=8&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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3

Brackett, Nathaniel. "Incorporation of Indeno[2,1-c]fluorenes into Polymers via Nucleophilic AromaticSubstitution." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1503673136761061.

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4

Okpara, Chinyere Emma. "The Design Synthesis and Antimalarial Activity of Novel Diamidines, Diguanidines, Substituted Fluorenes and Their Prodrugs." Thesis, University of Liverpool, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507710.

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5

Chase, Daniel Tyler 1983. "Synthesis of Indeno[1,2-b]fluorenes and the Incorporation of BODIPY Fluorophores into Tetrakis(arylethnyl)benzenes." Thesis, University of Oregon, 2011. http://hdl.handle.net/1794/12103.

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xx, 318 p. ： ill. (some col.)<br>Highly conjugated, carbon rich molecules are of great interest due to their unique optoelectronic properties. These molecules are now recognized as suitable materials for advanced materials applications such as light-emitting diodes, photovoltaics, and thin film transistors. Of particular interest is the indenofluorene (IF) scaffold, a 6-5-6-5-6-fused ring system that holds a striking topological similarity to pentacene, a very successful electron donating organic semiconductor. Also of interest is another class of compounds referred to as tetrakis(arylethynyl)
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6

ROZE, CARINE. "Vers de nouveaux polymeres issus de l'oxydation anodique de fluorenes et fluorenylidenes 9- ou 2- substitues. Synthese, comportement electrochimique et applications." Rennes 1, 1998. http://www.theses.fr/1998REN10046.

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La synthese et l'etude electrochimique de nouveaux polymeres issus du fluorene sont decrites. L'oxydation anodique du spiro-4h-4,9'-fluorenyl-2,6-diphenylthiopyrane conduit a un polymere conducteur de type polyphenylene substitue par des groupements thiopyrane. Le mecanisme d'une telle synthese est propose. Des polyfluorenylidenes substitues par des groupements donneurs ou accepteurs d'electrons sont synthetises. L'analyse de leur comportement electrochimique et des calculs theoriques de niveaux d'energie des orbitales frontieres de leurs monomeres, mettent en evidence que ces polymeres peuven
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7

Hales, Joel McCajah. "CHEMICAL STRUCTURE - NONLINEAR OPTICAL PROPERTY RELATIONSHIPS FOR A SERIES OF TWO-PHOTON ABSORBING FLUORENE MOLECULES." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4403.

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This dissertation reports on the investigation of two-photon absorption (2PA) in a series of fluorenyl molecules. Several current and emerging technologies exploit this optical nonlinearity including two-photon fluorescence imaging, three-dimensional microfabrication, site-specific photodynamic cancer therapy and biological caging studies. The two key features of this nonlinearity which make it an ideal candidate for the above applications are its quadratic dependence on the incident irradiance and the improved penetration into absorbing media that it affords. As a consequence of the burgeonin
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8

Youssef, Boulos. "Synthèse d'olfines allyliques fluorées et leurs applications dans les tensioactifs et les silicones fluorés." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37601911r.

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9

Correia, Fábio Conte. "Síntese e caracterização de polímeros contendo 9,9-dioctilfluoreno e 8-oxioctilquinolina para utilização como camada emissora de PLEDs." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-11072014-115535/.

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Utilizando a reação de acoplamento de Suzuki, novos polímeros e copolímeros semicondutores com elevado potencial para a fabricação de PLEDs foram sintetizados, tendo como finalidade unir em uma única camada emissiva, na forma de copolímeros ou na forma de blendas, materiais com propriedades transportadoras e injetoras de elétrons; grupos quinolina associados a materiais com elevadas propriedades de emissão de luz contendo grupos fluoreno. Esses copolímeros sintetizados, todos ainda não descritos na literatura ou em patentes, apresentaram rendimentos acima de 70% e rendimentos quânticos de foto
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10

Richthofen, Andreas Albert Von. "Benzo[5]radialenos como precursores de fluorenos e benzo[b]fluorenos." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-18092015-124232/.

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Neste trabalho demonstramos a preparação de fluorenos e benzo[b]fluorenos por uma nova rota sintética, baseada na reação de Diels-Alder de derivados benzo[5]radialênicos. Para a preparação destes últimos investigamos diversas estratégias, partindo de p-benzoquinona e três dienos: 1,1-dimetoxiciclopentadieno, 6,6-dimetilfulveno e 6-acetoxifulveno. A partir de cada fulveno obtivemos um benzo[5]radialeno diferente, sendo que o derivado dimetilado se mostrou inerte como dieno em cicloadições. O benzo[5]radialeno derivado do 6-acetoxifulveno, reagiu com diversos dienófilos tais como p-benzoquinona,
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11

Maesano, Tallone Élise. "Photooxydation d'hydrocarbures polyaromatiques a groupement methylene actif : fluorene, acenaphtene, cyclopenta(d,e,f)phenanthrene, benzo(a) fluorene et benzo(b) fluorene." Toulon, 1992. http://www.theses.fr/1992TOUL0006.

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Le sujet de cette these concerne l'etude de la photooxydation de cinq hydrocarbures polyaromatiques (hpa) a groupement methylene actif. Il s'agit du fluorene, de l'acenaphtene, du cyclopenta(d,e,f) phenanthrene et des benzo(a) et (b) fluorenes. Ces composes ont ete choisis parce qu'ils possedent une structure originale, et qu'ils sont egalement reconnus comme des polluants notoires dans l'environnement. L'interet de cette etude est double: un aspect purement photochimique et un aspect plus applique a la chimie de l'environnement. Dans l'etude photochimique, la reactivite de chaque hpa, a ete d
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12

GIULIERI, BLONDEL FRANCOISE. "Systemes moleculaires organises formes d'amphiphiles hautement fluores : vesicules, tubules. importance de la chaine fluoree sur les phenomenes d'auto-association." Nice, 1995. http://www.theses.fr/1995NICE4913.

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Afin de determiner le role des chaines fluorees sur le pouvoir associatif de molecules amphiphiles, nous avons choisi d'etudier des molecules simples hautement fluorees. Elles se composent d'une seule chaine fluoree reliee par un espaceur hydrocarbone a une tete zwitterionique (phosphocholine) ou neutre (phosphate de dimorpholine: c#nf#2#n#+#1c#mh#2#mop(o)#2#-oc#2h#4n#+(ch#3)#3 ; fncmpc, c#nf#2#n#+#1c#mh#2#mo(o)pn(ch#2ch#2)#2o#2 ; fncmdmp. Le premier chapitre est un rappel des proprietes des tensioactifs hydrocarbones classiques, des fluorocarbures et des tensioactifs perfluoroalkyles. Dans le
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13

Huguenot, Florent Portella Charles Brigaud Thierry. "Réactivité d'imines et d'oxazolidines fluorées chirales." Reims : S.C.D. de l'Université, 2005. http://scdurca.univ-reims.fr/exl-doc/GED00000050.pdf.

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14

Thiem, Heiko. "New fluorene based materials for organic electronics." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976988895.

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15

Girault, Yvonne. "Synthèse d'aziridines N-non substituées et d'amines fluorées." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb375979189.

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16

Said, M. S. "Hydrolysis mechanisms for iminosulphonate esters and fluorene esters." Thesis, University of Essex, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353160.

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17

PORHIEL, EMMANUEL. "Nouvelles porphyrines fluorees : synthese, caracterisation et catalyse d'oxydation." Rennes 1, 2000. http://www.theses.fr/2000REN10128.

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Les metalloporphyrines du fer et du manganese sont des catalyseurs de reactions d'oxydation et constituent des modeles de sites actifs d'enzymes. Differents oxydants peuvent etre utilises, des systemes catalytiques varies ont ete developpes et certains intermediaires ont ete caracterises. Dans ce memoire, nous developpons une nouvelle famille de porphyrines -fluorees dont plusieurs membres ont ete synthetises, caracterises et leurs comportements en catalyse d'oxydation ont ete determines. Une revue bibliographique sur les syntheses des porphyrines -electrodeficientes, sur leurs proprietes phys
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18

Oakley, Mark Thomas. "Polymers and doligomers with transverse aromatic groups : controlling the shape of flexible molecules and the rearrangement of α-ketols and related reactions." Thesis, University of Bristol, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247857.

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19

Bernardinelli, Oigres Daniel. "Estudo espectroscópico da dinâmica molecular e empacotamento em semicondutores orgânicos." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-04102011-141831/.

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Neste trabalho estudamos a dinâmica molecular e o empacotamento em semicondutores orgânicos com diferentes tamanhos de cadeias conjugada usando uma estratégia de multi-técnicas, em particular Ressonância Magnética Nuclear (RMN), espalhamento de Raios-X de alto ângulo (WAXS), Calorimetria Exploratória Diferencial (DSC), espectroscopia Raman e espectroscopias Ópticas de absorção UV-Vis e fluorescência. Nestes estudos utilizamos oligômeros de fluorenos, com 3, 5 e 7 unidades repetitivas e copolímeros multibloco conjugados/não-conjugados com as unidades conjugadas constituídas por unidades de feni
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20

Salama, Isabel Cristina Cabral de Assis. "Quantificação de fluoreto ingerido pela dieta utilizando questionário de frequência alimentar e concentração de fluoreto nas unhas em crianças de 1 a 3 anos de idade /." Araçatuba, 2018. http://hdl.handle.net/11449/180513.

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Orientador: Alberto Carlos Botazzo Delbem<br>Coorientador: Robson Frederico Cunha<br>Banca: Denise Pedrini Ostini<br>Banca: Juliano Pelim Pessan<br>Banca: Daniela Cristina de Oliveira<br>Banca: Mariana Emi Nagata<br>Resumo: Objetivo: Avaliar a ingestão de fluoreto (F) por crianças de 1 a 3 anos de idade pela dieta e a concentração de F nas unhas. Método: Crianças (n=202) de 12 meses de idade, participantes de um programa preventivo para bebês, tiveram a ingestão de F monitorada por meio da aplicação de um Questionário de Frequência Alimentar semi-quantitativo (QFA), composto por 70 itens, divi
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21

Green, Simon James. "Rod-coil block copolymers of fluorene and siloxane segments." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580592.

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Block copolymers have been of great interest to the scientific community for a number of years as they offer a route to control polymer morphology, via self- assembly, at a level that is very difficult to achieve by other means. Coil-coil block copolymers have been extensively investigated and the physical properties of these polymers. are reasonably well understood both experimentally and theoretically. Rod-coil block copolymers are block copolymers in which one of the blocks acts as a rigid rod. Apart from scientific curiosity, one of the driving forces behind research into rod-coil block co
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22

Denis, Jean-Christophe H. "Modelling ultrafast exciton transfer in fluorene-based organic semiconductors." Thesis, Heriot-Watt University, 2014. http://hdl.handle.net/10399/3247.

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We present a theoretical study of exciton dynamics in solutions and films of fluorene-based molecules, complemented by experimental work carried out by our colleagues at the University of St Andrews. We start by introducing the importance and relevance of such a study, and the methods we use to model ultra-fast (picoand sub-picosecond) exciton photo-physics in these systems. We then demonstrate that exciton transfer in solution of some branched star-shaped oligofluorene-based molecules arises from molecular geometry relaxation, and, at a slower time-scale, from F¨orster hopping between the arm
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23

Benefice-Malouet, Sylvie. "Synthèses en série hautement fluorée." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37595896b.

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24

Wrackmeyer, Marion Sofia. "Akzeptorsubstituierte Oligothiophene und Fluorene für die Anwendung in organischen Solarzellen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-71009.

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In der vorliegenden Arbeit wurden Thiophenoligomere nach dem Konzept Akzeptor – Donator – Akzeptor (A-D-A) und Donator – Akzeptor – Donator (D-A-D) synthetisiert und umfassend charakterisiert. Oligothiophene unterschiedlicher Kettenlänge stellen dabei den Donatoranteil des Moleküls dar, während 2,2-Dicyanovinyle (DCV), 1,3,2-2H-Dioxaborine (DOB), 2,1,3-Benzothiadiazole (BTDA) die Akzeptorstruktur im Molekül repräsentieren. Diese Materialien sollen als Absorber in der intrinsischen Schicht von organischen Solarzellen (OSC) eingesetzt werden. Zusätzliche Untersuchungen an DOB-substituierten Fluo
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25

Kaya, Emine. "Solution Processable Benzotriazole And Fluorene Containing Copolymers For Photovoltaic Applications." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613561/index.pdf.

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2-Dodecyl benzotriazole and 9,9-dioctylfluorene containing alternating copolymers poly((9,9-dioctylfluorene)-2,7-diyl-(2-dodecyl-benzo[1,2,3]triazole)) (P1), poly((9,9-dioc-tylfluorene)-2,7-diyl-(4,7-bis(thien-2-yl) 2-dodecyl benzo[1,2,3]triazole)) (P2), poly((9,9 dioctylfluorene)-2,7-diyl-(4,7-bis(3-hexylthien-5-yl) 2-dodecyl-benzo[1,2,3]triazole)) (P3) were synthesized via Suzuki polycondensation. Synthesized monomers and copolymers were characterized by Nuclear Magnetic Resonance (1H-NMR, 13C-NMR). Optical and electronic properties of resulting alternating copolymers were investigated by me
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Mukundarajan, Sriram. "Synthesis of Alkylthiol-containing Fluorene Derivatives for Gold Nanoparticle Functionalization." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3570.

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A novel synthetic methodology has been developed for attaching fluorene derivatives, containing different types of electron donating and accepting groups at the 2 and 7 positions, to gold nanoparticles of different sizes by exploiting the affinity of the thiol functional group for gold. The distance between the dye and nanoparticles was varied by introducing two alkyl chains containing different number of carbon atoms at the 9 position on the fluorene ring system. The methodology that was developed gave enough scope for performing Radiative Decay Engineering (RDE) studies, in order to investig
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27

Khalil, Gamal Ezat Abdel-Razek. "Single-Molecule Spectroscopy of Fluorene and Thiophene-Based Organic Semiconductors." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521976.

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28

Chaudhary, Mohammad Yaqub. "Charge transport, injection and optical properties of fluorene based copolymers." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/33205.

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In this work we investigate the charge transport, injection and optical properties of several series of fluorene based copolymers. These properties are key areas for polymer semiconductor research studies that are intended to address the challenges of achieving electrically pumped polymer lasing. In general, high charge carrier mobility and luminescence efficiency have been found to be mutually exclusive, however, optimising both together, as well as demonstrating high optical gain will be a significant step to offset losses associated with the mechanisms for lasing. A further requirement is t
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Silva, Márcio Marques da. "Efeitos optoeletrônicos em copolímeros do fluoreno." reponame:Repositório Institucional da UFOP, 2014. http://www.repositorio.ufop.br/handle/123456789/3935.

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Programa de Pós-Graduação em Ciências – Física de Materiais. Departamento de Física, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto.<br>Submitted by Oliveira Flávia (flavia@sisbin.ufop.br) on 2014-10-20T19:29:36Z No. of bitstreams: 1 DISSERTAÇÃO_EfeitosOptoeletrônicosCopolímeros.pdf: 3815571 bytes, checksum: b72e568a35fb4cb80d7f52a4e2d603e6 (MD5)<br>Approved for entry into archive by Gracilene Carvalho (gracilene@sisbin.ufop.br) on 2014-11-18T14:48:24Z (GMT) No. of bitstreams: 1 DISSERTAÇÃO_EfeitosOptoeletrônicosCopolímeros.pdf: 3815571 bytes, checksum: b72e568a
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Zhang, Xu. "Organic and organometallic fluorenyl-pophyrins for optics." Thesis, Rennes, INSA, 2017. http://www.theses.fr/2017ISAR0009/document.

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Au cours de cette thèse, nous avons synthétisé de nouveaux composés en utilisant des macrocycles de porphyrines comme socle pour nos architectures. L'objectif était d'étudier leurs propriétés en optique linéaire et non linéaire. Plus précisément, nous avons synthétisé et caractérisé trois groupes de dendrimères de type fluorényl-porphyrine, une série de porphyrines organométalliques dérivés du ruthénium, et commencé une dernière série de nouvelles porphyrines. Les corrélations entre les propriétés et la structure ont été étudiés, le processus de transfert d'énergie du donneur vers la porphyrin
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Vieira, Ana Elisa de Mello. "Metodologia para determinar a relação dose-resposta de produtos fluoretados utilizando esmalte bovino e modelo de ciclagem de pH /." Araçatuba, 2003. http://hdl.handle.net/11449/95477.

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Orientador: Alberto Carlos Botazzo Delbem<br>Resumo: O objetivo do presente trabalho foi desenvolver metodologia para determinar a relação dose-resposta de produtos fluoretados utilizando esmalte bovino e modelo de ciclagem de pH. Os blocos de esmalte, previamente selecionados através de microdureza de superfície, foram submetidos ao tratamento diário com solução placebo e soluções de NaF a 275, 550, e 1100 ppm F. Foram realizados dois métodos in vitro de desafio cariogênico para verificar o potencial dos produtos fluoretados para inibir a perda mineral (Des>Re) e a capacidade para promover a
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Gautier, Martine. "Photoamidation d'oléfines fluorées en milieu homogène et en microémulsions non aqueuses." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37605325r.

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33

Boardman, Frederick Holden. "New liquid crystals for display mixtures." Thesis, University of Southampton, 2001. https://eprints.soton.ac.uk/427017/.

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This thesis is concerned with the design, synthesis and properties of thermotropic liquid crystals based on the fluorene and 9,10-dihydrophenanthrene core units. Derivatives of 9,10-dihydrophenathrene were found to be both expensive to prepare and difficult to purify, and attention was concentrated on fluorene derivatives. Simple 2,7-disubstituted fluorenes are either monotropic or exhibit enantiotropic smectic phases. Accordingly a third benzene ring was directly coupled to the fluorene core to give a 2-phenylfluorene. The homologous series of 2-(4-cyanophenyl)-7-alkylfluorenes from ethyl to
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34

Namal, Imge. "Synthesis And Electrochemical Studies Of Fluorene And Benzimidazole Containing Conjugated Polymers." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615382/index.pdf.

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The synthesis and characterization of two donor acceptor type conjugated polymers were investigated. The electrochemical properties were examined using cyclic voltammetry, spectroelectrochemistry and kinetic studies. The increase in the alkyl chain length attached to the fluorene unit was investigated by the corresponding electrochemical characteristics. The synthesis was carried out via Stille coupling of 4,7- dibromo-4&#039<br>-(tert-butyl)spiro[benzo[d]imidazole-2,1&#039<br>cyclohexane] and 2,5- bis(tributylstannyl)thiophene with 9,9-dihexyl-9H fluorene and 9,9-didodecyl-9H fluorene respect
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35

DUBUFFET, THIERRY. "Les oxirannes : une ouverture vers la synthese de molecules selectivement fluorees." Paris 6, 1989. http://www.theses.fr/1989PA066592.

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La synthese de molecules fluorees presente un interet certain. De par ses proprietes, l'atome de fluor peut induire des modifications notables de la reactivite. Nous avons etudie l'ouverture d'oxirannes et d'oxetannes par des organo-lithiens fluorovinyliques en presence de trifluorure de bore afin d'obtenir des alcools homoallyliques fluores ainsi que leurs homologues superieurs. Dans un deuxieme temps, nous nous sommes interesses aux fluoro-silyloxirannes. Nous en decrivons la synthese ainsi que leur reactivite vis-a-vis des acides protiques forts et des nucleophiles (ion fluorure,. . . ). Ce
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36

BERNARDO-BOUTEILLER, VERONIQUE. "Synthese et caracterisation de nouveaux polystyrenes porteurs de chaines laterales fluorees." Paris 6, 1995. http://www.theses.fr/1995PA066532.

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Deux familles de polystyrenes porteurs de chaines laterales fluorees ont ete synthetisees a partir de differents monomeres styreniques fluores par polymerisation et copolymerisation avec le styrene par voie radicalaire dans le but d'obtenir des materiaux possedant des proprietes de surface interessantes. La premiere famille comporte une fonction ether dans l'espaceur alors que la seconde famille comporte une fonction ester. Les proprietes thermiques des (co)polymeres ont ete examinees par analyse enthalpique differentielle, microscopie optique en lumiere polarisee et diffraction des rayons x.
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37

Pilla, Viviane. "Espectroscopia não linear em cristais fluoretos e polianilina." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-09042008-141356/.

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Nesta trabalho estudamos o efeito de refração não linear em cristais fluoretos dopados com Cr+3 e polímeros. Tais cristais fluoretos têm recebido bastante atenção dos pesquisadores por apresentarem um espectro de emissão de banda larga e ação laser sintonizável na região de aproximadamente 780-1010 nm. Aplicando a técnica de lente Térmica (LT), realizamos um estudo quantitativo do comportamento da eficiência quântica de emissão, na presença dos processos de supressão térmica da fluorescência e conversão ascendente. Apresentamos um novo método de aplicação da técnica de LT, que possibilita a de
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Pitoni, Carla Moreira. "Efeito de fluoretos na remineralização de lesões dentinárias." Florianópolis, SC, 2007. http://repositorio.ufsc.br/xmlui/handle/123456789/89779.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde. Programa de Pós-Graduação em Odontologia.<br>Made available in DSpace on 2012-10-23T02:37:52Z (GMT). No. of bitstreams: 1 245550.pdf: 1934073 bytes, checksum: 44382b519349cd38232140aa3f939716 (MD5)<br>Esta tese é composta de dois artigos. No artigo 1, foi avaliado in situ o efeito de três protocolos de aplicação tópica de flúor (G1: Dentifrício Fluoretado - DF; G2: DF + 1 aplicação tópica de flúor - DF + 1ATF; G3: DF + 4 ATFs) na remineralização de lesões de cárie em dentina. Através de teste de microdurez
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Saltori, Eduardo Karam. "Comportamento de cirurgiões-dentistas de Curitiba-PR--acerca da indicação e utilização dos fluoretos." reponame:Repositório Institucional da UFSC, 1992. http://repositorio.ufsc.br/xmlui/handle/123456789/76819.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina. Centro de Ciencias da Saude<br>Made available in DSpace on 2012-10-16T22:08:41Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T17:46:35Z : No. of bitstreams: 1 88109.pdf: 1759011 bytes, checksum: 69f126130c7707e275ea3a40cfa4b252 (MD5)<br>Com o propósito de identificar o comportamento de cirurgiões-dentistas de Curitiba, Paraná, com relação às indicações e utilizações dos fluoretos em sua prática profissional, o autor entrevistou 71 clínicos gerais, 54 especialistas e 34 professores de odontologia. Concluiu que, embora o
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Domingues, Raquel Aparecida 1981. "Efeito do substrato/espessura na indução de alterações conformacionais em poli(fluorenos)." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249477.

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Orientador: Teresa Dib Zambon Atvars<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-25T12:38:23Z (GMT). No. of bitstreams: 1 Domingues_RaquelAparecida_D.pdf: 6835134 bytes, checksum: cb024bd183c16c1ab7db85bee2dd72dc (MD5) Previous issue date: 2013<br>Resumo: Neste trabalho foram estudadas as propriedades fotofísicas de dois derivados de polifluoreno, F8BT e PFO-MEHPPV, visando determinar a influência de substratos sobre as mesmas. Os materiais na forma de filme foram depositados por spin coating em substrato de vidro e de
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Perez, Emile. "Nouveaux substrats et nouveaux milieux en métathèse oléfines fluorées, microémulsions au formamide /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376087425.

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MONTEVILLE, ACHILLE. "Materiaux vitroceramiques fluores transparents dopes erbium." Rennes 1, 2000. http://www.theses.fr/2000REN10007.

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L'objectif de cette etude a ete de developper une nouvelle vitroceramique transparente, dopee aux terres rares, possedant les proprietes spectroscopiques de sa phase cristalline pour des applications optiques et plus particulierement pour l'amplification. Au cours de ce travail, nous avons developpe un verre de fluorozirconate dope erbium suffisamment stable et reproductible, contenant uniquement des elements trivalents et tetravalents (zrf 4, laf 3, alf 3, erf 3, gaf 3 et inf 3). La determination des temperatures caracteristiques, par analyse thermique differentielle, nous a permis d'etablir
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43

Martins, Márcia Sofia Silva. "Synthesis and neuroprotection studies of new xanthenes and fluorenes." Master's thesis, 2021. https://hdl.handle.net/10216/136714.

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Chou, Chia-Hung, and 周嘉宏. "Synthesis and Characterization of Light-Emitting polymers:Poly-2,7-fluorenes with Dendrimer Side Chains." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/82702594124395909050.

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碩士<br>國立交通大學<br>應用化學系<br>90<br>This dissertation is aimed to synthesis and characterize light-emitting polymers：Poly-2,7-fluorenes with dendritic side chains (generation 0, 1, 2 and 3). We hope that we can synthesize a new material, which may emits pure blue fluorescence without the contamination of the long wavelength emission from aggregates / excimer. Absorption and emission spectra revealed that the bulky dendritic side chains neither increased the torsion angle nor perturbed the conjugation of the polyfluorene backbone. The emission spectra from the film of polymer PF-G-2 (16)、PF-G-3 (17)
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Haggam, Reda [Verfasser]. "Selective transformations of substituted aryl compounds to fluorenes and phosphoramidates : synthetic and spectroscopic studies / presented by Reda Haggam." 2010. http://d-nb.info/1007932171/34.

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Kaiser, Reinhard Peter. "Development of new syntheses of condensed aromatic compounds." Doctoral thesis, 2018. http://www.nusl.cz/ntk/nusl-388871.

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This work is divided into two parts that are focused on the synthesis and assessment of photophysical properties of two structurally related compounds: (i) 9,9'-spirobifluorenes (SBFs) and (ii) dispiroindeno[2,1-c]fluorenes (DS-IFs). (i) In the first part, a five-step synthetic approach to SBFs was developed and as the crucial step was used an intermolecular [2+2+2] cyclotrimerization of symmetrically or unsymmetrically substituted diynols with alkynes catalyzed by Rh-complexes. Catalyst screening showed that Wilkinson's catalyst (RhCl(PPh3)3) had the highest efficiency in yielding 1,2,3,4-sub
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Lin, Ke-Ting, and 林克亭. "Novel bipolar host materials (cis-stilbene/fluorene and fluorene/benzimidazole hybrid) applied in OLEDs." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/kfu6ky.

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碩士<br>國立臺灣海洋大學<br>光電科學研究所<br>102<br>This thesis is composed of two major parts. On the first part, a spirally configured cis-stilbene/fluorene hybrid (CSP) as host material applied in OLEDs. The CSP exhibits a solid state photoluminescence quantum yield (PL = 65 %) and electron transport ability (e ≈ 10–5 cm2/Vs); we have used it to fabricate a non-doped deep-blue organic light emitting diode (OLED) exhibiting promising performance [ηext = 3.5 %; CIE = (0.15, 0.15)] and to serve as host material for a orange OLED [ηext = 3.2%; CIE = (0.52, 0.47)]. Exploiting these dual roles, we used CSP in
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Chandra, Sirish Dandamudi. "Bioavailability of sediment-sorbed fluorene." Thesis, 1996. http://hdl.handle.net/1911/14070.

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The bioavailability of sorbed organic chemicals is a major concern in the application of bioremediation processes to contaminated sediments. Sorption of pollutants may lead to the inability of microbes to come in contact with the compound. Studies presented herein investigate the biodegradation and desorption of fluorene, a 3 ringed polynuclear aromatic hydrocarbon (PAH), in estuarine sediment-water slurries. Adsorption of fluorene to sediments with 1.4% organic carbon was characterized with a linear isotherm. Desorption was characterized through step-desorption tests and temporal-desorption t
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Wu, Ren-Chi, and 吳仁棋. "Synthesis and Electro-Optical Properties of Hyperbranched Fluorene Derivatives and A New Fluorene-Based Conjugated Polymer." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/59436150420644049774.

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碩士<br>國立交通大學<br>應用化學系所<br>98<br>This study is focused on the synthesis of hyperbranched fluorene derivatives and their applications in polymer light-emitting diodes (PLEDs) and solar cells. Three polymers, hb-TF, hb-BTF and hb-BTDTF, were synthesized by [2+2+2] trimerization of the corresponding oligo-arene diacetylene monomers using TaCl5 as the catalyst. All the polymers were fully characterized by Fourier transform infrared spectrometer (FT-IR), gel permeation chromatography (GPC), thermal gravimetric analyzer (TGA), differential scanning calorimeter (DSC), photoluminescence spectroph
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Chien, Yuh-Yih, and 簡裕益. "Fluorene-based Organic Conjugated Optoelectronic Materials." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/36124888610064171311.

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碩士<br>國立臺灣大學<br>化學研究所<br>90<br>Abstract There are two parts in this thesis. First, new triaryldiamines based on 9,9-diarylfluorene as a central linkage were synthesized, the diarylamino groups at the C7 and C2 positions of the fluorene core were introduced by a Pd-catalyzed amination in the presence of a catalytic amount of P(tBu)3 as a cocatalyst. These compounds exhibited high thermal stability and were found to be amorphous with high Tg. The X-ray single crystal structure indicates that the C9 diaryl groups and the bulkyl diarylamine groups effectively prevent any significant int
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