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Dissertations / Theses on the topic 'Phthalocyanines – Derivatives'

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Published: 4 June 2021

Last updated: 3 February 2022

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1

Maqanda, Weziwe Theorine. "Synthesis, photochemical and photophysical properties of phthalocyanine derivatives." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1007472.

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Substituted zinc and magnesium phthalocyanine and porphyrazine derivatives were synthesized according to the reported procedures. The magnesium and zinc phthalocyanine and porphyrazine derivatives were synthesized by ring enlargement of subphthalocyanine and statistical condensation of the two phthalonitrile derivatives. Characterization of the complexes involved the use of infrared spectroscopy, nuclear magnetic resonance spectroscopy, ultraviolet and visible spectroscopy, and Maldi-TOF spectroscopy (for selected compounds) and elemental analysis. Photochemical and photophysical properties of

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2

Chauke, Vongani Portia. "Synthesis, photochemical and photophysical properties of gallium and indium phthalocyanine derivatives." Thesis, Rhodes University, 2008. http://eprints.ru.ac.za/1135/.

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3

Ogunsipe, Abimbola Olukayode. "Photophysical and photochemical studies of non-transition metal phthalocyanine derivatives." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1007721.

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A detailed photophysicochemical study of some non-transition metal (AI, Zn, Si, Ge, and Sn) metallophthalocyanine (MPc) derivatives is presented. The effects of substituents, central metal ions and solvents on the photophysical and photochemical properties are investigated and rationalized accordingly. The presence of peripheral substituents on the macrocycle enhances the yield of the triplet state. Near infra-red absorptions of the solvents reveal that solvents which absorb around 1100 nm and around 1270 nm, quench the triplet state of the MPc derivative and singlet oxygen, respectively. Alth

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4

Matlaba, Pulane Maseleka. "Synthesis of zinc phthalocyanine derivatives for possible use in photodynamic therapy." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1005039.

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The synthesis of symmetrically and unsymmetrically substituted zinc phthalocyanines (ZnPc) derivatives is done according to reported procedures. The unsymmetrical ZnPc derivatives are synthesized by ring expansion of sub-phthalocyanine complexes. Ring substitution is effected with tert-butyl phenol, naphthol, and hydroxybenzoic acid. Comparison of the redox potentials for the complexes substituted with varying numbers of tert-butyl phenol: 1, 2, 3, 6 and 8 show that the complex with the highest number of substituents are more difficult to oxidize and easier to reduce. Water soluble sulphonated

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5

Omapinyan, Sriwalai Chaisang. "Vibrational spectroscopy of porphyrins, phthalocyanines and tetraphenyl derivatives of group IV-A elements." Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361416.

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6

Yavuz, Arzu. "Synthesis And Characterization Of Electrochemically Polymerized Metal-free, Nickel And Zinc Containing Phthalocyanine Derivatives." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610723/index.pdf.

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In the first part of this study, 4-(2,5-di-2-thiophen-2-yl-pyrrol-1-yl)-phthalonitrile (SNS-PN) was synthesized by utilizing 1,4-di(2-thienyl)-1,4- butadione (SOOS) and 4-aminophthalonitrile via Knorr-Paal Reaction. Nuclear magnetic resonance (1H NMR and 13C NMR) and fourier transform infrared (FTIR) spectroscopies were utilized for the characterization of this compound. SNS-PN monomer was then electrochemically polymerized in acetonitrile/0.2 M LiClO4 solvent/electrolyte couple. Characterizations of the resulting polymer P(SNS-PN) were carried out by cyclic voltammetry (CV), UV&ndash<br>vis a

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7

Lu, Chin-Wei. "Synthesis of Asymmetric Phthalocyanine Derivatives." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/312651.

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The work in this dissertation describes improved methods of asymmetrically substituted Pc derivative synthesis addressing some currently encountered problems including: (1) the need for facile synthesis of asymmetric Pc/Nc hybrids; (2) a lack of general methods for producing asymmetric Pc materials with structural diversity. Chapter 1 provides a concise review on Pc and Pc/perylenediimide (PDI) derivatives that have been reported as a part of architecture in monochromophoric or multichromophoric molecules for energy and charge transfer studies. In addition, the intrinsic electronic and photop

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8

Dunn, A. J. "Synthesis and spectroscopic studies of some substituted phthalocyanine derivatives." Thesis, University of East Anglia, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377695.

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9

Cao, Yu, and Yu Cao. "Molecular Engineering of Phthalocyanine Derivatives as Materials for Organic Photovoltaics." Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/605113.

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Phthalocyanine (Pc) derivatives are π-conjugated molecules that have been explored as active layer components in organic photovoltaics (OPVs). The structure can be modified through incorporation of metals and installation of substituents which allows modulation of Pc-based materials toward desired solubility, photophysical properties and condensed phase organization. Research efforts in this thesis can be classified as (i) modulation of Pc absorption (Q-band) toward long wavelength to provide materials for near-infrared (NIR) absorbing OPVs, and (ii) development of solution processable Pc deri

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10

Collazo-Ramos, Aura L., and Aura L. Collazo-Ramos. "Synthesis of Phthalocyanine Derivatives as Materials for Organic Photovoltaic Cells." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/621741.

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Organic photovoltaics (OPVs) are used to convert sunlight into electricity by using thin films of organic semiconductors. OPVs have the potential to produce low cost, lightweight, flexible devices with an eased manufacturing process. This technology contains the potential to increase the use of clean, sustainable solar energy, helping manage the global energy and environmental crisis that results majorly from the constant use of fossil fuels as an energy source. The ability to modulate the physical properties of organic molecules by tuning their chemical structure is an advantage for OPVs. Pht

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11

Mayukh, Mayank. "NEAR-IR ABSORBING PHTHALOCYANINE DERIVATIVES AS MATERIALS FOR ORGANIC SOLAR CELLS." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/145442.

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Phthalocyanines (Pcs) are highly conjugated synthetic porphyrin analogs that exhibit high extinction coefficients and hole mobilities, and strong pi-pi interactions. We have developed a general method for the synthesis of peripherally functionalized Pc chromophores using `click' chemistry, wherein an alkynyl substituted Pc is reacted with an azide, providing an elegant route to the creation of a library of numerous Pcs. We have also developed a simple route to the synthesis of tri- and tetravalent metal Pc derivatives such as titanyl phthalocyanine (TiOPc) involving solvent-free conditions. So

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12

Bezzu, Caterina Gavina Grazia. "Synthesis and crystal structures of phthalocyanine derivatives containing bulky phenyloxy substituents." Thesis, Cardiff University, 2009. http://orca.cf.ac.uk/54793/.

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The planar extended shape of the phthalocyanine macrocycle results in a strong tendency of its derivatives to form densely packed co-facial aggregates. The strategy to avoid co-facial self-association that forms the basis of this thesis involves the use of substituents that can introduce severe steric crowding adjacent to the phthalocyanine core. Previous work showed that the introduction of 2,6-di-/jo-propylphenoxy groups on the peripheral positions of the phthalocyanine seems to be perfect for this purpose. Of particular interest is zinc octa(2,6-di-/$o-propylphenoxy) phthalocyanine (PclZn),

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13

Samuely, Tomáš. "STM study of self-assembled phthalocyanine derivatives and their hosting properties." Göttingen Cuvillier, 2008. http://d-nb.info/992263042/04.

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14

Roberts, Jessica, and Jessica Roberts. "Synthesis, Spectroscopic Studies, and Computational Analysis of a Solvatochromic Phthalocyanine Derivative." Thesis, The University of Arizona, 2016. http://hdl.handle.net/10150/621366.

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A near-IR absorbing phthalocyanine containing alkylthio and alyklamino substituents along the periphery was determined to have optical properties that vary depending on surrounding solvent environment. Solvatochromic behavior of this novel chromophore has been characterized through UV-Vis absorbance and fluorescence spectroscopy. Conformational analysis using the B3LYP/6-31G* model indicates the lowest energy conformer with hydrogen bond like interactions between the sulfur lone pair and the hydrogen on the alkylamino substituent. TD-DFT analysis of the solvatochromic phthalocyanine and its pa

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15

Toader, Iulia Genoveva. "Electrical and Morphological Characterisation of Organic Field-Effect Transistors." Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-100403.

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In dieser Arbeit wurden unterschiedliche Moleküle aus der Klasse der Phthalocyanine (Pc) und Pentacen-Materialien als aktive Schichten in organischen Feldeffekttransistoren (OFETs) mittels organischer Molekularstrahldeposition (OMBD) unter Hochvakuumbedingungen aufgedampft. Die elektrische Charakterisierung von Top-Kontakt (TC) und Bottom-Kontakt (BC) OFET-Konfigurationen, die Auskunft über die Ladungsträgermobilität, die Schwellspannung und das Ein/Aus-Verhältnis gibt, wurde sowohl unter Hochvakuum- als auch unter Umgebungsbedingungen an Luft durchgeführt. Für beide OFET-Konfigurationen wurde

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16

Heeney, Martin. "The synthesis and characterisation of some novel highly functionalised phthalocyanine and naphthalocyanine derivatives." Thesis, University of East London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297472.

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17

Agbabiaka, Ahmed A. "A study of toluene di-isocyanate (TDI) sensing based on metal-free phthalocyanine derivatives." Thesis, London South Bank University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264823.

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18

Auger, Aurelien Camille. "Towards the synthesis of novel phthalocyanine derivatives for PDT and and near-infrared absorbing dyes." Thesis, University of East Anglia, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405720.

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The phthalocyanines are a family of intensely coloured compounds (usually blue or green) which are structurally similar to the porphyrins. A brief summary of different phthalocyanines reported in the literature so far, their preparations and applications are detailed in the introductory chapter. A number of substituted phthalocyanines are already known as effective photosensitisers for photodynamic therapy (PDT). Therefore the design and synthesis of a series of new unsymmetrically substituted phthalocyanine derivatives has been described. Also the preparation of a series of phthalocyanines be

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19

Fashina, Adedayo, Edith Amuhaya, and Tebello Nyokong. "Photophysical studies of newly derivatized mono substituted phthalocyanines grafted onto silica nanoparticles via click chemistry." Elsevier, 2015. http://hdl.handle.net/10962/d1020287.

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This work reports on the synthesis, characterization and photophysical studies of newly derived phthalocyanine complexes and the phthalocyanine–silica nanoparticles conjugates. The derived phthalocyanine complexes have one terminal alkyne group. The derived phthalocyanine complexes showed improved photophysical properties (ФF, ФT, ΦΔ and τT) compared to the respective phthalocyanine complexes from which they were derived. The derived phthalocyanine complexes were conjugated to the surface of an azide functionalized silica nanoparticles via copper (1) catalyzed cyclo-addition reaction. All the

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20

Liličenko, Nadežda [Verfasser]. "Adsorption kinetic investigations of phthalocyanine derivatives self assembled monolayers (SAMs) on gold: Temperature influence on the SAM formation process and quality / Nadežda Liličenko." Kassel : Universitätsbibliothek Kassel, 2015. http://d-nb.info/1075466954/34.

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21

Riechers, Ricarda Eva Friederike Elisabeth [Verfasser], and Alkwin [Akademischer Betreuer] Slenczka. "High-resolution spectroscopy in superfluid helium droplets. Investigation of vibrational fine structures in electronic spectra of phthalocyanine and porphyrin derivatives / Ricarda Eva Friederike Elisabeth Riechers. Betreuer: Alkwin Slenczka." Regensburg : Universitätsbibliothek Regensburg, 2011. http://d-nb.info/1023282038/34.

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22

Alexiou, Christos. "The synthesis, characterization and electrochemical parametrization of several chromium phthalocyanine and porphyrin derivatives /." 2003. http://wwwlib.umi.com/cr/yorku/fullcit?pMQ99270.

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Thesis (M.Sc.)--York University, 2003. Graduate Programme in Chemistry.<br>Typescript. Includes bibliographical references (leaves 88-91). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ99270

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23

"Part I, Toward hydrophilic and non-aggregated phthalocyanines. Part II, Assembling tetrapyrrole derivatives by axial coordination and covalent linkage." 2003. http://library.cuhk.edu.hk/record=b6073611.

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"December 2003."<br>Thesis (Ph.D.)--Chinese University of Hong Kong, 2003.<br>Includes bibliographical references.<br>Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.<br>Mode of access: World Wide Web.<br>Abstracts in English and Chinese.

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24

"Photosensitizing applications and supramolecular chemistry of phthalocyanines and subphthalocyanines." Thesis, 2008. http://library.cuhk.edu.hk/record=b6074636.

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At the end of this thesis, the 1H and 13C{ 1H} NMR spectra for all the new compounds and the crystallographic data are given as an Appendix.<br>Chapter 1 presents an overview of phthalocyanines and subphthalocyanines, including their general synthesis, properties, photosensitizing applications, and supramolecular chemistry.<br>Chapter 2 describes the synthesis and spectroscopic characterization of a series of subphthalocyanines axially substituted with an oligoethylene glycol chain [SPcB(OCH2CH2)nOH] (n = 3, 4) or a p-phenoxy oligoethylene glycol methyl ether chain [SPcBOC 6H4(OCH2CH2)nOCH3] (

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25

"Synthesis and electrochemistry of tetrapyrrole derivatives substituted with ferrocenyl moieties." 1999. http://library.cuhk.edu.hk/record=b5896331.

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by Ka-Wo Poon.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 1999.<br>Includes bibliographical references (leaves 113-120).<br>Abstracts in English and Chinese.<br>ABSTRACT --- p.i<br>ACKNOWLEDGMENT --- p.iii<br>CONTENTS --- p.iv<br>LIST OF FIGURES --- p.vi<br>LIST OF TABLES --- p.x<br>ABBREVIATIONS --- p.xi<br>Chapter 1. --- INTRODUCTION --- p.1<br>Chapter 1.1 --- General Background of Tetrapyrrole Derivatives --- p.1<br>Chapter 1.2 --- Electronic Interactions in Systems with Multiple Redox Sites --- p.8<br>Chapter 1.2.1 --- Electronic Interactions in One-dimensional Systems

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26

"Tetrapyrrole derivatives with novel optical properties: part I, synthesis of ferrocene-containing push-pull diphenylporphyrins ; part II, Light-harvesting naphthalene-phthalocyanine systems." 2000. http://library.cuhk.edu.hk/record=b5895795.

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by Ka Lok Cheng.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2000.<br>Includes bibliographical references (leaves 115-122).<br>Abstracts in English and Chinese.<br>Abstract --- p.i<br>Abstract (in Chinese) --- p.ii<br>Acknowledgement --- p.iii<br>Table of Contents --- p.iv<br>List of Figures --- p.viii<br>List of Tables --- p.xi<br>Abbreviations --- p.xii<br>Chapter PART I --- SYNTHESIS OF FERROCENE-CONTAINING PUSH-PULL DIPHENYLPORPHYRINS --- p.1<br>Chapter Chapter 1 --- Introduction --- p.2<br>Chapter 1.1 --- Introduction to Nonlinear Optics --- p.2<br>Chapter 1.1.1 --- In

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27

"Photodynamic activities and metal sensing behavior of boron dipyrromethenes and a silicon (IV) phthalocyanine." Thesis, 2010. http://library.cuhk.edu.hk/record=b6075089.

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At the end of this thesis, the 1H and 13C {1H} NMR spectra of all the new compounds are listed in the Appendix.<br>Chapter 1 presents an overview of BODIPYs, including their general synthesis, properties, reactivities, and applications. The use of these compounds as photosensitizers for photodynamic therapy and fluorescent sensors for metal ions is highlighted.<br>Chapter 2 reports the synthesis, spectroscopic characterization, photophysical propreties, and in vitro photodynamic activities of a series of symmetrical distyryl BODIPYs substituted with one to five hydrophilic oligoethylene glycol

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28

Ogunsipe, Abimbola Olukayode, D. Maree, and Tebello Nyokong. "Solvent effects on the photochemical and fluorescence properties of zinc phthalocyanine derivatives." 2003. http://hdl.handle.net/10962/d1004162.

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The effects of solvents on the singlet oxygen, photobleaching and fluorescence quantum yields for zinc phthalocyanine (ZnPc) and its derivatives; (pyridino)zinc phthalocyanine ((py)ZnPc), zinc octaphenoxyphthalocyanine (ZnOPPc) and zinc octaestronephthalocyanine (ZnOEPc), is presented. The effects of the solvents on the ground state spectra are also discussed. The largest red shift of the Q band was observed in aromatic solvents, the highest shift being observed for 1-chloronaphthalene. Higher singlet fluorescence quantum yields were observed in THF for ZnPc and ZnOPPC. Also in the same solven

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29

"Study of fluorescent properties of zinc phthalocyanine and derivatives using fourier transform spectroscopy." 2008. http://library.cuhk.edu.hk/record=b5893441.

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Han, Fangyuan.<br>Thesis submitted in: November 2007.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2008.<br>Includes bibliographical references (leaves 68-72).<br>Abstracts in English and Chinese.<br>Title Page --- p.I<br>Thesis Committee --- p.II<br>Acknowledgements --- p.III<br>Abstract --- p.IV<br>摘要 --- p.V<br>Table of Contents --- p.1<br>List of Figures --- p.4<br>List of Tables --- p.6<br>Chapter Chapter 1 --- Introduction --- p.7<br>Chapter Chapter 2 --- Fourier Transform Spectroscopy --- p.10<br>Chapter A. --- The Michelson Interferometer and the Interferogram --- p

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30

Erdoğmuş, Ali, and Tebello Nyokong. "New soluble methylendioxy-phenoxy-substituted zinc phthalocyanine derivatives : synthesis, photophysical and photochemical studies." 2009. http://hdl.handle.net/10962/d1004135.

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The syntheses of new three phthalonitriles (1, 2 and 3), together with photophysical and photochemical properties of the resulting peripherally and non-peripherally tetrakis- and octakis 3,4-(methylendioxy)-phenoxy-substituted zinc phthalocyanines (4, 5 and 6) are described for the first time. Complexes 4, 5 and 6 have been synthesized and characterized by elemental analysis, IR, 1H NMR spectroscopy, electronic spectroscopy and mass spectra. Complexes 4, 5 and 6 have good solubility in organic solvents such as CHCl3, DCM, DMSO, DMF, THF and toluene and are mainly not aggregated (except for com

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31

Ogunbayo, T. B., and Tebello Nyokong. "Synthesis and Pd(II) binding studies of octasubstituted alkyl thio derivatised phthalocyanines." 2009. http://hdl.handle.net/10962/d1004170.

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Synthesis and characterization of non-peripherally (4,5) and peripherally (6,7) substituted metal free and Pd octapentylthiophthalocyanine and coordination of palladium ions to these Pcs are reported. The unmetalated complexes (4 and 6) show Pd coordination at the central metal and at the ring. The number of Pd ions bound to complex 4 were found to be five and to complex 6 were three. The equilibrium constant for the binding of Pd to complexes 4 was lower (K = 1.2 × 109 dm3 mol−1) than for complex 6 (K = 5.7 × 1010 dm3 mol−1).

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32

Toader, Iulia Genoveva. "Electrical and Morphological Characterisation of Organic Field-Effect Transistors." Doctoral thesis, 2011. https://monarch.qucosa.de/id/qucosa%3A19807.

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In dieser Arbeit wurden unterschiedliche Moleküle aus der Klasse der Phthalocyanine (Pc) und Pentacen-Materialien als aktive Schichten in organischen Feldeffekttransistoren (OFETs) mittels organischer Molekularstrahldeposition (OMBD) unter Hochvakuumbedingungen aufgedampft. Die elektrische Charakterisierung von Top-Kontakt (TC) und Bottom-Kontakt (BC) OFET-Konfigurationen, die Auskunft über die Ladungsträgermobilität, die Schwellspannung und das Ein/Aus-Verhältnis gibt, wurde sowohl unter Hochvakuum- als auch unter Umgebungsbedingungen an Luft durchgeführt. Für beide OFET-Konfigurationen wurde

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33

Nyokong, Tebello, and W. J. U. Chidawanyika. "Spectroscopic and photophysicochemical behaviour of novel cadmium phthalocyanine derivatives tetra-substituted at the alpha and beta positions." 2009. http://hdl.handle.net/10962/d1004147.

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The syntheses of three cadmium phthalocyanine derivatives tetrakis{1,(4)-(4-benzyloxy)phenoxyphthalocyaninato} (5a), tetrakis{1,(4)-(2-pyridyloxy)phthalocyaninato} (5b) and tetrakis{2,(3)-(4-benzyloxy)phenoxyphthalocyaninato} (6a) are reported here for the first time. Spectroscopic and photophysical properties have also been determined and the results are discussed here paying particular attention to the influence of various organic solvents in relation to the position and type of substitution. Singlet oxygen quantum yields (ΦΔ) and photodegradation quantum yields (ΦPd) have also been discusse

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34

Ogunsipe, Abimbola Olukayode, and Tebello Nyokong. "Effects of substituents and solvents on the photochemical properties of zinc phthalocyanine complexes and their protonated derivatives." 2004. http://hdl.handle.net/10962/d1004161.

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Zinc phthalocyanine derivatives containing various ring substituents and axial ligands were studied with respect to the effect of substituents on protonation. Aggregation resulted in failure of some of the ZnPc derivatives to protonate. In fact addition of protonating agents to aggregated ZnPc derivatives resulted in increase in aggregation followed by slow degradation. Axial ligands were lost on protonation. Photobleaching, fluorescence and singlet oxygen quantum yields of the protonated derivatives were compared with those of the unprotonated derivatives. In all cases protonation decreases t

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