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Dissertations / Theses on the topic 'Organic electron donors'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Schonebeck, Franziska. "Super electron donors powerful reductions performed by neutral organic molecules." Thesis, University of Strathclyde, 2007. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21732.

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This project aims to explore the ability of organic molecules to transfer electrons and is based on the recent development within the Murphy group of a novel organic molecule, called Super-S.E.T. reagent 1, that allows the reduction of unactivated aryl and alkyl iodides. My study investigates the scope of donor 1 as a reducing agent and extends the study to a more powerful donor 2. Chapter One provides an introduction to the world of electron transfer. After giving a theoretical background, synthetic applications of electron transfer are highlighted, in particular using metal chemistry, electr

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2

Cumine, Florimond. "Studies on organic electron donors and their applications in chemistry." Thesis, University of Strathclyde, 2017. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=29432.

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Electron transfer reactions using organic donors have been and are still successfully applied in the Murphy group to perform reductions usually requiring heavy metals. This thesis focuses on several organic electron donors used to: (i) promote the cross-coupling reaction between aryl halides and benzene, which was also studied with computational experiments, (ii) cleave carbon-oxygen bonds and (iii) reduce nitrobenzenes and azobenzenes. In addition, computational analysis of controversial literature proposals for a radical/electron transfer mechanism for ring-forming reactions of alkoxide alle

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3

Buker, Nicholas D. "Guanidine donors in nonlinear optical chromophores /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/8669.

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4

Chua, Jonathan. "Exploring new reactions with Organic Electron Donors and the complexities of the Birch reduction." Thesis, University of Strathclyde, 2016. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=26437.

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Reductive σ-bond cleavages of challenging substrates under metal-free, mild conditions have recently been achieved with photoactivated super-electron donor (SED). These include (but are not limited to) C-O bonds of benzylic ethers and esters, C-N bonds of benzylic sulfonamides and aromatic amides. This work has successfully widened the substrate scope of reduction by SED to include i) the C-O bond cleavages of phenolic esters and aryl ethers and ii) the C-S bond cleavages of aromatic sulfides, sulfoxides and sulfones. Previously it was also discovered that the X-N bond of several amides were r

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5

Anderson, Greg. "Towards the rational development of organic super electron donors for transition metal-free biaryl coupling." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27424.

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Within both the industrial and academic laboratory, the coupling of two aryl moieties is a process of significant synthetic use. To achieve such transformations typically requires the use of expensive transition metal catalysts that cannot always be recovered from the reaction mixtures. Consequently, the investigation of biaryl coupling reactions without the requirement for any such catalysts has been of key interest amongst chemists. Throughout the literature, a variety of simple organic molecules have been incorrectly termed as “ligands” or “catalysts” with respect to their role in transitio

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6

Tyree, William Stuart. "Correlation of Structure and Magnetic Properties in Charge-Transfer Salt Molecular Magnets Composed of Decamethylmetallocene Electron Donors and Organic Electron Acceptors." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34436.

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Di-n-propyl dicyanofumarate (DnPrDCF) and di-isopropyl dicyanofumarate (DiPrDCF) have been used as one-electron acceptors in the synthesis of charge-transfer salt magnets with decamethylmetallocenes, MCp*2 (M = Mn, Cr). Salts of each acceptor with each metallocene have been characterized and the structures of the chromium analogues have been solved. The two acceptors are structurally similar to dimethyl dicyanofumarate (DMeDCF) and diethyl dicyanofumarate (DEtDCF), which have been previously studied and found to form charge-transfer salt magnets with the aforementioned decamethylmetallocenes

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7

Xu, Yunhua. "Synthesis and Photoinduced Electron Transfer of Donor-Sensitizer-Acceptor Systems." Doctoral thesis, Stockholm : Department of Organic Chemistry, Stockholm University, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-411.

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8

Zhao, Yuxi. "Synthèse de donneurs d’électrons organiques : application en synthèse organique et chimie des polymères." Electronic Thesis or Diss., Aix-Marseille, 2021. http://www.theses.fr/2021AIXM0156.

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Les donneurs d'électrons organiques (DEO), aux potentiels redox exceptionnellement négatifs, ont montré un intérêt particulier en synthèse organique du fait de leurs fortes propriétés réductrices. Ils sont capables de transférer spontanément un ou deux électrons à des substrats organiques, formant ainsi des intermédiaires radicalaires ou anioniques. Néanmoins, la diversité structurale des DEO est limitée et leur champ d'application assez restreint.Dans cette thèse, nous avons tout d'abord développé de nouvelles bibliothèques de DEO afin d'identifier de nouvelles familles de réducteurs organiqu

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9

Fall, Arona. "Donneurs d’électrons organiques : développement d’un nouveau système catalytique photoredox." Electronic Thesis or Diss., Aix-Marseille, 2021. http://www.theses.fr/2021AIXM0607.

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Durant ces dernières décennies, la réactivité des donneurs d’électrons organiques de type énamine (DEO) a été largement exploitée dans des réactions de réduction par transfert électronique. De part leurs forts pouvoir réducteur avec des potentiels redox exceptionellement négatifs, les DEOs sont capables de transférer spontanément un ou deux électrons à des substrats organiques, formant ainsi des intermédiaires radicalaires ou anioniques. Cependant, ces DEOs sont toujours utilisés en quantité stœchiométrique, ce qui limite leur compétivité face aux catalyseurs organométalliques et organiques.Le

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10

Turek, Amanda Katherine. "Activation of Electron-Deficient Quinones Through Hydrogen-Bond-Donor-Coupled Electron Transfer." Thesis, Harvard University, 2015. http://nrs.harvard.edu/urn-3:HUL.InstRepos:23845499.

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Quinones are organic oxidants that play important roles in biological contexts and find wide application in organic synthesis. They are known to be activated toward electron transfer through hydrogen bonding, which has largely been observed for Lewis basic, weakly oxidizing quinones. Comparable activation through H-bonding is more difficult to achieve when more reactive, electron-deficient quinones are used, as these intrinsically weaker Lewis bases are less prone to engage in H-bonding interactions. Herein, we describe the successful application of HBD-coupled electron transfer as a strate

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11

Tsutsumi, Jun'ya. "Solid-state structures and electronic properties of organic molecules fabricated by connecting electron donor and acceptor components." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/124380.

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12

Lay, Alexander Kit. "New π-electron donor systems based on 1,4-dithin derivatives". Thesis, Durham University, 1997. http://etheses.dur.ac.uk/4725/.

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A review of organic, π-electron donor molecules is given. The focus is on non- tetrathiafulvalene based systems. Polycyclic arenes, thioalkyl substituted arenes, chalcogenated fulvalenes, peri-dichalcogen bridged polycyclic arenes and heteroarenes are covered. Various π-electron donor molecules based on acenaphtho[ 1,2-b][ 1,4]-dithin have been synthesised via various methodologies. The redox properties of these molecules, as studied by cyclic voltammetry, provide evidence that these species are efficient π-electron donors. A selection of these compounds have also been studied by Electron Spin

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13

Bröker, Benjamin. "Electronic and structural properties of interfaces between electron donor & acceptor molecules and conductive electrodes." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2011. http://dx.doi.org/10.18452/16257.

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Die vorliegende Arbeit behandelt Fragestellungen aus der Organischen Elektronik, in der die Ladungsträgerinjektion in alle Arten von Bauteilen kritisch von der elektronischen und morphologischen Struktur der Grenzflächen zwischen Elektrode und den konjugierten organischen Molekülen (KOM) abhängt. Näher betrachtet wurden: die Energieniveauanpassung mit starken (i) Elektronendonatoren und (ii) -akzeptoren und (iii) die dichteabhängige Umorientierung einer molekularen Monolage. Zur Analyse wurden Photoelektronen- und Reflektionsabsorptionsinfrarotspektroskopie angewandt. Weitere Informationen

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14

Doni, Eswararao. "Novel applications of a 4-DMAP-derived organic electron donor under photoactivation." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=19078.

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15

Caulfield, Jason M. "Magnetic quantum oscillations in organic metals based on the molecule bis(ethylenedithio)tetrathiafulvalene." Thesis, University of Oxford, 1994. http://ora.ox.ac.uk/objects/uuid:5fbf2599-96d8-4eac-b882-ac74213ac3a5.

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ET charge transfer salts (where ET is <en>bis(ethylenedithio)- tetrathiafulvalene) have relatively simple quasi two-dimensional Fermi surface topologies, making them ideal for the study of the relationship between bandstructure and properties such as superconductivity. Experimental studies of the Fermi surface areas and associated effective masses have been carried out using the Shubnikov-de Haas (SdH) and de Haas-van Alphen (dHvA) effects. By comparing the experimental results to theoretical bandstructure calculations the strength of many body interactions has been estimated. High pressure ma

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16

Christodoulou, Christodoulos. "Electronic and structural properties at the interfaces between graphene and molecular acceptors/donors." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2015. http://dx.doi.org/10.18452/17318.

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In dieser Arbeit wurde die Austrittsarbeit von Graphen, einer vielversprechenden Elektrodenmaterial für (opto)- elektronische Bauteile, durch die Adsorption von luftbeständigen konjugierten organischen Molekülen (KOMs), welche als Akzeptoren und Donatoren fungieren, modifiziert. Die Eigenschaften der Valenz- und Rumpfniveaus sowie die Austrittsarbeitsmodifikation der vakuumverdampften KOMs wurden mit Photoelektronenspektroskopie (PES) untersucht, während die Orientierung der KOMs mit Röntgen-Nahkanten-Absorptions-Spektroskopie (NEXAFS) aufgeklärt wurde. Die Austrittsarbeit von Graphen auf Quar

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17

ZHOU, JIANING. "DIKETOPYRROLOPYRROLE‐ AND ISOINDIGO‐ BASED CONJUGATED POLYMER FOR ORGANIC ELECTRONIC DEVICE." University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1619617910133478.

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18

Richard, Coralie Adèle. "Tailoring benzodithiophene core molecules for organic electronic applications." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53419.

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In this dissertation, the multiple facets of benzodithiophene (BDT) units are explored, with a focus on understanding how the isomerism of the BDT structure affects the macroscopic properties of the oligomeric and polymeric materials created. First, the story focuses on an overview of the BDT synthons and their applications in organic electronics. A straightforward synthesis of BDT and its derivatization to seven π-conjugated building blocks and seven polymers is presented. Then, symmetric (donor)2-acceptor (D2-A) dye architecture for application in dye-sensitized solar cells are investigated.

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19

Placencia, Diogenes. "Interface Studies of Small-Molecule Organic Photovoltaics; Surface Modifications, Electron Donor Texturing, and Co-Facial Variations at the Donor/Acceptor Heterojunctions." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/202936.

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The role of the oxide/organic and organic/organic interfaces in small-molecule planar-Heterojunction (PHJ) photovoltaics was investigated with three interrelated projects: i) indium-tin oxide (ITO) bottom contact electrodes were modified with gold nanoparticles (Au-NPs) to improve rates of charge-transfer at the donor/oxide interface, ii) donor layers in OPVs were textured to increase charge generation at the organic/organic' interface, and iii) the effect of co-facial overlap on device performance via tuning of the electron acceptor orientation at the organic/organic interface. The modificat

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20

Webre, Whitney Ann. "Spectral, Electrochemical, Electron Transfer, and Photoelectrochemical Studies of Tetrapyrrole Derived Supramolecular Systems." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1609091/.

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Energy- and electron-transfer processes in molecular and supramolecular donor-acceptor systems are of current interest in order to develop light-energy harvesting systems through designing covalently linked donor-acceptor systems or utilizing self-assembled donor-acceptor systems. The research presented in this dissertation deals with the electrochemical, anion binding, and photochemical studies of various oxoporphyrinogen (OxPs), porphyrin, corrole, and phenothiazine systems. The first chapter provides a brief introduction to the material discussed in the subsequent chapters. The second chapt

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21

Pandey, Laxman. "Theoretical studies of the structure-property relationships of hole- and electron-transport materials for organic photovoltaic applications." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/48964.

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Donor-acceptor and thiophene based π-conjugated molecules and polymers, along with fullerene derivatives, are extensively used active components in the photoactive layer of organic photovoltaic devices. In this dissertation, we make use of several computational methodologies to investigate structure-property relationships of these organic systems in their molecular forms. We begin with an overview of the field of organic photovoltaics and some of the important problems in organic solar cells that are currently being investigated. This is then followed by a brief review of the electronic-struct

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22

Chan, Yiu Him. "Effect of dopants and gate dielectrics on charge transport and performance of organic thin film transistor." HKBU Institutional Repository, 2012. https://repository.hkbu.edu.hk/etd_ra/1450.

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23

Peckus, D., A. Devizis, D. Hertel, and V. Gulbinas. "Excited State Relaxation in Vacuum Deposited and Solution Processed Films of Merocyanine/Fulerene Blends." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35299.

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Exciton dynamics in merocyanine/fulerene blend films made by vacuum deposition and solution processing techniques were investigated by means of steady-state and time resolved fluorescence and absorption spectroscopy. Intermolecular charge transfer states are formed during several ps in neat merocianine films, which determine their fluorescence properties. Fullerene additives cause formation of new heterogeneous charge transfer states. Even a small fullerene concentration significantly influences the exciton dynamics by quenching inherent merocianine fluorescent states and causing appearan

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24

Svarovsky, Serge A. "Structure, stability and reactivity of small organic sulfinic and sulfonic acids toxicological implications ; Role of charge transfer complexes in oxidation cleavage of benzpinacols by iron (III) trispenanthroline /." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1231.

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25

Schubert, Marcel. "Elementary processes in layers of electron transporting Donor-acceptor copolymers : investigation of charge transport and application to organic solar cells." Phd thesis, Universität Potsdam, 2014. http://opus.kobv.de/ubp/volltexte/2014/7079/.

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Donor-acceptor (D-A) copolymers have revolutionized the field of organic electronics over the last decade. Comprised of a electron rich and an electron deficient molecular unit, these copolymers facilitate the systematic modification of the material's optoelectronic properties. The ability to tune the optical band gap and to optimize the molecular frontier orbitals as well as the manifold of structural sites that enable chemical modifications has created a tremendous variety of copolymer structures. Today, these materials reach or even exceed the performance of amorphous inorganic semiconducto

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26

Fu, Boyi. "Design and syntheses of hole and electron transport donor-acceptor polymeric semiconductors and their applications to organic field-effect transistors." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54868.

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The π-conjugated organic and polymeric semiconducting materials have attracted much attention in the past years due to their significant potential in applications to electronic and optoelectronic devices including organic field-effect transistors (OFETs), organic photovoltaics (OPVs), and organic light-emitting diodes (OLEDs), etc. Yet, organic and polymeric semiconductors still have challenges associated with their relatively low charge carrier (hole and electron) transport mobilities and ambient stability in OFET applications. This dissertation discusses the molecular engineering on backbon

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27

Biswas, Debanjan. "A Modified Procedure for the Synthesis of Bis(phenylenedioxy)tetrathiafulvalene (BPDO-TTF): an Electron Donor for Charge Transfer Organic Complexes." [Johnson City, Tenn. : East Tennessee State University], 2002. http://etd-submit.etsu.edu/etd/theses/available/etd-0710102-123535/restricted/BixwasD073102.pdf.

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28

GALLONI, PIERLUCA. "Construction of electron-active complex systems as model for artificial photosynthesis." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2004. http://hdl.handle.net/2108/202905.

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La fotosintesi artificiale è un obiettivo ambizioso per la scienza moderna, che richiede una comprensione completa dei sistemi naturali. La comprensione di tutte le diverse reazioni del sistema è uno degli aspetti fondamentali nella ricerca chimica, fisica e biologica. Lo studio delle reazioni di trasferimento elettronico tra un accettore e un donatore è un punto cruciale, sia per lo sviluppo di sistemi artificiali sintetici, sia per possibili applicazioni nella costruzione di dispositivi elettronici e materiali fotosensibili. Lo scopo di questa tesi è stato quello di investigare reazioni di t

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29

Patil, Basanagouda B. "Enhancing the electrical performance of the donor-acceptor conjugated polymer based organic field effect transistors through device engineering for electronic applications." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/207503/1/Basanagouda_Patil_Thesis.pdf.

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This thesis is a step towards developing all solution processed, low operating voltage, Donor-Acceptor Conjugated Polymers based Organic Field Effect Transistors (OFETs) for printed and flexible electronics. Main emphasis has been devoted to developing series of highly tailored device engineering strategies that bring sequential improvements to electrical characteristics. Research outcomes are guided by structure-property evaluation, including semiconductor-dielectric interface engineering for optimal response, and work-function tuning with application of self-assembled monolayers to circumven

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30

Schubert, Marcel [Verfasser], and Dieter [Akademischer Betreuer] Neher. "Elementary processes in layers of electron transporting Donor-acceptor copolymers : investigation of charge transport and application to organic solar cells / Marcel Schubert. Betreuer: Dieter Neher." Potsdam : Universitätsbibliothek der Universität Potsdam, 2014. http://d-nb.info/1052682847/34.

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31

Ponsot, Amanda Eileen. "SYNTHESIS OF TETRABENZO[18]CYCLYNE CROSS-CONJUGATED MACROCYCLES WITH FOCUS ON THE DONOR-ACCEPTOR INDUCED FUNCTIONALITY." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1280887889.

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32

Maibach, Julia [Verfasser], Wolfram [Akademischer Betreuer] Jaegermann, and Heinz von [Akademischer Betreuer] Seggern. "Preparation and Characterization of Solution Processed Organic Semiconductor Interfaces: Electronic Properties of Thiophene-Fullerene based Donor-Acceptor Systems / Julia Maibach. Betreuer: Wolfram Jaegermann ; Heinz von Seggern." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2014. http://d-nb.info/1110901321/34.

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33

Benahmed-Gasmi, Amina. "Nouveaux précurseurs de matériaux organiques conducteurs : des donneurs-pi aux polymères conjugués." Angers, 1996. http://www.theses.fr/1996ANGE0020.

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Ce travail porte sur l'élaboration et la caractérisation de plusieurs séries de systèmes hybrides du tetrathiafulvalène (HTTFS). Ces systèmes sont construits par le greffage de deux motifs 1,3-dithiole-2-ylidene aux deux extrémités d'un espaceur conjugué. Apres une première étape consacrée à l'analyse des différentes possibilités d'insertion d'espaceurs benzéniques, plusieurs séries de HTTFS dérivées d'hétérocycles aromatiques, thiophène, furanne et n-méthyl pyrrole, ont été synthétisées, l'analyse des propriétés électrochimiques de ces derniers montre qu'ils conduisent à un abaissement du pot

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34

Becher, Tiago Branco. "SÍNTESE E CARACTERIZAÇÃO DE DÍADES VISANDO A APLICAÇÃO EM DISPOSITIVOS FOTOVOLTAICOS." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2013. http://tede2.uepg.br/jspui/handle/prefix/2110.

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Made available in DSpace on 2017-07-24T19:38:09Z (GMT). No. of bitstreams: 1 Tiago Branco Brecher.pdf: 1790856 bytes, checksum: f4d811ea50a13d94dfcb1d13c6444f12 (MD5) Previous issue date: 2013-04-12<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>In this paper we address the development of synthetic routes to four organic structures called dyads, which are compounds formed by an electron donating group covalently attached to an electron acceptor group. What sparked your interest in synthesizing these molecules was the potential of being applied in organic photovoltaic devic

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Fournier, Jeannine. "Adsorption des hydrocarbures polycycliques aromatiques sur des solides donneurs d'electrons." Paris 6, 1987. http://www.theses.fr/1987PA066168.

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Widmer, Johannes. "Charge transport and energy levels in organic semiconductors." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-154918.

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Organic semiconductors are a new key technology for large-area and flexible thin-film electronics. They are deposited as thin films (sub-nanometer to micrometer) on large-area substrates. The technologically most advanced applications are organic light emitting diodes (OLEDs) and organic photovoltaics (OPV). For the improvement of performance and efficiency, correct modeling of the electronic processes in the devices is essential. Reliable characterization and validation of the electronic properties of the materials is simultaneously required for the successful optimization of devices. Further

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Diac, Andreea Petronela. "Design, synthesis and supramolecular architectures of new heterocyclic compounds with potential applications in material chemistry and photovoltaic conversion." Thesis, Angers, 2015. http://www.theses.fr/2015ANGE0019/document.

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La thèse intitulée «Design, Synthesis and SupramolecularArchitectures of New Heterocyclic Compounds with PotentialApplications in Material Chemistry and Photovoltaic Conversion” eststructurée en cinq chapitres traitant de nouveaux: a)cyclopenta[c]pyrannes hétérocyclique; b)des propriétés fluorescentes; d) potentiels dispositifs de l'électroniquemoléculaire; d) donneurs moléculaires pour les photovoltaïquesorganiques et e) carbon‘quantum’dots électroluminescents.Le premier chapitre présente une étude des dérivéspseudoazulenique ayant une unité cyclopenta[porte sur leur synthèse, l'analyse struc

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Rabah, Jad. "Assemblages donneur-accepteur à base de BODIPY-[60]Fullerène pour l’électronique organique : Synthèse, caractérisation, et modification de surface Photoinduced Electron Transfer and Energy Transfer Processes in a Flexible BODIPY‑C60 Dyad Synthesis of a Dual Clickable Fullerene Platform and Construction of a Dissymmetric BODIPY-[60]Fullerene DistyrylBODIPY Triad A fullerene helical peptide: synthesis, characterization and formation of self-assembled monolayers on gold surfaces." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASF036.

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Ce manuscrit de thèse porte sur la synthèse de nouveaux assemblages covalents Donneur(s)-Accepteur(s) [BODIPY(s)-C60(s), BDP-C60] qui pourraient conduire à des applications potentielles en électronique organique et en photo-catalyse. Pour atteindre ces objectifs, nous avons dans un premier temps mis au point une nouvelle stratégie de synthèse permettant la double fonctionnalisation d’un dérivé du C60, par différents BDP(s), via des réactions de chimie clic. Cette nouvelle stratégie a permis la synthèse d’assemblages BPD(s)-C60(s) complexes conduisant à des processus photo-induits multiples lié

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Aguiar, António Luís Gonçalves de. "New boron-dipyrromethene (BODIPY) molecules as suitable electron-donors for organic photovoltaic cells." Doctoral thesis, 2019. http://hdl.handle.net/10316/88807.

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Tese no âmbito do Doutoramento em Química, Ramo de Especialização em Química Macromolecular apresentada ao Departamento de Química da Faculdade de Ciências e Tecnologia da Universidade de Coimbra.<br>As células fotovoltaicas orgânicas (OPVs) têm surgido como uma das alternativas mais apelativas às células fotovoltaicas baseadas em semicondutores inorgânicos (essencialmente silício), devido ao baixo custo de produção, leveza, flexibilidade dos dispositivos e versatilidade na integração em edifícios. As moléculas de boro-dipirrometeno (BODIPY) são fotossensibilizadores muito promissores para apl

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Lu, Chih-Wei, and 呂誌偉. "Applications of Small Molecule Donors, Electron Transporting Materials, and Transparent Silver Nanowire Electrodes in Organic Solar Cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/71280929755194387323.

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碩士<br>國立清華大學<br>材料科學工程學系<br>101<br>In this thesis, I focus on the material characterization and the device optimization of small molecule organic solar cells (SMOSCs). In the first part, I briefly review the history and development of organic solar cells (OSCs), followed by working mechanisms, material preparation, device structures and measurement of OSCs. In the second part of thesis, before evaluting new donor compounds for SMOSCs, I review some previous reports of SMOSCs employing symmetrical or unsymmertrical small molecular donors. Among our symmetrical donor compounds, PyCN, a donor wi

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Reitzenstein, Dörte. "Donor-Acceptor Conjugated Polymers for Application in Organic Electronic Devices." Doctoral thesis, 2010. https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-53939.

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In the first part of the work three polycarbazoles poly[N-((4-dimesitylboryl)-3,5-dimethylphenyl)-carbazole]-2,7-diyl P1, poly[N-((4-dimesitylboryl)-3,5-dimethylphenyl)-carbazole]-3,6-diyl P2 and poly[N-(4-(diphenylmethylene)-phenyl)- carbazole]-2,7-diyl P3 were synthesized by Yamamoto coupling reaction and their spectroscopic and electrochemical properties were investigated. Absorption and fluorescence characteristics of P1 and P3 were found to be similar to other 2,7-linked polycarbazoles, whereas P2 shows a CT absorption band arising from a shift of electron density from the nitrogen of the

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Kuo, Hsing-Chen, and 郭幸甄. "Synthesis and Properties of Dipolar Organic Molecules containing electron Donor and Acceptor Substituents." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/05719217209291791077.

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碩士<br>國立中央大學<br>化學研究所<br>94<br>Starting from Heptcyclo [6.6.0.02.6.03.13.04.11.05.9.010.14] tetradecane (HCTD), we were able to synthesize a series of donor-bridge-acceptor substituted derivatives by condensation reaction. The component for the condensation was 1,3-indanedione for the acceptor part. We also synthesized the reference compounds by using the Wolff-Kishner reduction. Fluorescence spectra provided evidence for efficient photoinduce electron transfer.

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Chow, Boting, and 周柏廷. "Synthesis and Properties of Cage-shaped Organic Molecules Containing Electron Donor and Acceptor Groups." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/63090349228823392976.

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碩士<br>中國文化大學<br>應用化學研究所<br>96<br>Synthesis and Properties of Cage-shaped Organic Molecules Containing Electron Donor and Acceptor Groups Chingyang Liu , Tahsin J. Chow* Starting from Heptcyclo [6.6.0.02.6.03.13.04.11.05.9.010.14] tetradecane (HCTD), we were able to synthesize a series of donor-bridge-acceptor substituted derivatives by Sonogashira coupling rection and condensation reaction. The component for the condensation was 1,3-indanedione and diethyl malonate for the acceptor part. Fluorescence spectra provided evidence for efficient photoinduce electron transfer in only the compound 1

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Vasylieva, Marharyta. "Electrochemical and spectroelectrochemical studies of electronic interactions in donor-acceptor-donor (DAD) and donor-acceptor (DA) systems." Rozprawa doktorska, 2021. https://repolis.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=71932.

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Vasylieva, Marharyta. "Electrochemical and spectroelectrochemical studies of electronic interactions in donor-acceptor-donor (DAD) and donor-acceptor (DA) systems." Rozprawa doktorska, 2021. https://delibra.bg.polsl.pl/dlibra/docmetadata?showContent=true&id=71932.

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Ye, Jyun-Ming, and 葉竣銘. "Synthesis of Indolo[3,2-b]indole Arene as A New Electron Donor for Organic Photovoltaic Applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/35604559875368521058.

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碩士<br>國立交通大學<br>應用化學系碩博士班<br>100<br>Indolo[3,2-b]indole, containing two fused indole units, is an promising and attractive electron-rich monomer for constructing donor-acceptor materials due to its planar, symmetric, and extended conjugated structure. It is of interest to incorporate indolo[3,2-b]indole unit into a donor-acceptor ??conjugated system via its 2,7 or 3,8 positions to investigate the electronic and steric effects. In this research, we have successfully developed a new synthetic scheme to prepare 2,7-dibromo-indolo[3,2-b]indole. Unexpectedly, in an attempt to make 3,8-diromo-indolo

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Reitzenstein, Dörte [Verfasser]. "Donor-acceptor conjugated polymers for application in organic electronic devices / vorgelegt von Dörte Reitzenstein." 2010. http://d-nb.info/1009899856/34.

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Bheemaraju, Amarnath. "Effect of side chains on organic donor (D) and acceptor (A) complexes and photophysical properties of D-A dyads." 2011. https://scholarworks.umass.edu/dissertations/AAI3482586.

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This dissertation aims to understand the effect of incompatible side chains on the complexes of π-conjugated electron-rich donors and electron-deficient acceptors in solution. The role of incompatible side chains were studied in simple mixtures of organic donor and acceptor molecules that form donor-acceptor complexes. The incompatible branched and linear alkane side chains on the acceptor and donor respectively prevented complex formation between naphthalene diimide acceptor and naphthalene ether donor. However, the incompatible hydrocarbon-fluorocarbon and polar-non polar side chain pairs di

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Mukhopadhyay, Sukrit. "Theoretical Studies Of Electronic Properties And Electronic Processes In Conjugated Molecules." Thesis, 2010. https://etd.iisc.ac.in/handle/2005/1265.

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This thesis deals with theoretical studies of electronic properties of organic conjugated molecules. The first chapter introduces different classes of organic conjugated molecules which possess high hole mobility, large quadratic non-linear response and low band gap. In this chapter, we further describe different photo-physical processes and the basic principles of various opto-electronic devices. The second chapter provides an introduction to various many-body techniques, which are employed in studying ground and excited state properties of organic conjugated systems. First, we describe the H

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Bill, Nathaniel Lloyd. "Extension of tetrathiafulvalene conjugation through pyrrollic-based dyes : ExTTF porphyrin and ExTTF BODIPY." Thesis, 2013. http://hdl.handle.net/2152/23527.

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The research and development of organic electron donors is essential in the discovery of photodynamic therapy photosensitizers and catalysts, as well as in the fabrication of organic-based electronic devices. Recently, [pi]-extended tetrathiafulvalenes (exTTFs) have emerged as important organic donors due to their superb electronic properties. However, in general, exTTFs lack significant absorption in the visible and near-infrared portions of the electromagnetic spectrum, thereby limiting their utility. This doctoral dissertation depicts the author's efforts to address this inherent drawback o

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