The Synthesis of Monometallated and Unsymmetrically Substituted Binuclear Phthalocyanines and a Pentanuclear Phthalocyanine by Solution and Polymer Support Methods PDF Download
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Author: C. C. Leznoff
Publisher:
ISBN:
Category :
Languages : en
Pages : 49
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Book Description
Binuclear phthalocyanines in which two different phthalocyanine nuclei are covalently linked through five-atom bridges, derived from 2-ethyl-2-methylpropan-1,3-diol are prepared. In the examples, one phthalocyanine ring is always substituted with neopentoxy substituents, while the other phthalocyanine ring is unsubstituted or contains a tert-butyl substituents or a neopentoxy substituted copper phthalocyanine, constituting a biculear phthalocyanine in which only one ring is metallated. The precursor, 2-(2-hydroxymethyl-2-methylbutoxy)-9,16,23-trineopentoxyphthalocyanine41 was prepared in solution and also by solid phase methods, using polymer-bound trityl chloride derived from a 1% divinylbenzene-co-styrene co-polymer. Keywords: Phthalocyanine, Binuclear, Pentanuclear, Polymer support. (jes).
Author: C. C. Leznoff
Publisher:
ISBN:
Category :
Languages : en
Pages : 49
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Book Description
Binuclear phthalocyanines in which two different phthalocyanine nuclei are covalently linked through five-atom bridges, derived from 2-ethyl-2-methylpropan-1,3-diol are prepared. In the examples, one phthalocyanine ring is always substituted with neopentoxy substituents, while the other phthalocyanine ring is unsubstituted or contains a tert-butyl substituents or a neopentoxy substituted copper phthalocyanine, constituting a biculear phthalocyanine in which only one ring is metallated. The precursor, 2-(2-hydroxymethyl-2-methylbutoxy)-9,16,23-trineopentoxyphthalocyanine41 was prepared in solution and also by solid phase methods, using polymer-bound trityl chloride derived from a 1% divinylbenzene-co-styrene co-polymer. Keywords: Phthalocyanine, Binuclear, Pentanuclear, Polymer support. (jes).
Author:
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Category : Aeronautics
Languages : en
Pages : 1460
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1120
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 928
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Author:
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ISBN:
Category : Mass spectrometry
Languages : en
Pages : 934
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Author: Neil B. McKeown
Publisher: Cambridge University Press
ISBN: 9780521496230
Category : Science
Languages : en
Pages : 222
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Book Description
This monograph describes the preparation, fabrication and structure of phthalocyanine-based materials.
Author: Ali R A Shoukat
Publisher: GRIN Verlag
ISBN: 3346095401
Category : Technology & Engineering
Languages : en
Pages : 98
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Book Description
Master's Thesis from the year 2009 in the subject Chemistry - Materials Chemistry, , course: M.Phil, language: English, abstract: This thesis is about Substituted Nickel Phthalocyanines and their preparation. Currently intensive research work is going on in producing phthalocyanine compounds, which have been useful for applications, such as important industrial dyes and pigments since their early syntheses at the beginning of last century. They have been employed as charge carriers in photocopiers and laser printers, as well as materials for optical storage in recent years. Many potential applications were expected for these molecular materials which have a high thermal and chemical stability, for instance as potential industrial catalysts, solar cell functioning materials , gas sensors , nonlinear optical limiting devices , as power leads and as molecular switches in nanotechnology, photodynamic therapy agents, antiscrapie treatments, antimycotic materials, antimicrobial agents, as corrosion inhibitors, as photoconductors, electrical conductors, photosensitizers, photovoltaic materials and as colorants for cyano toners. Except for few derivatives, soluble phthalocyanine complexes were prepared for dyes and colors, which were found to be impure. Use of pure phthalocyanines and their derivatives are very important in order to exploit the full potential of the coloring effects, thermal stability, photoconductivity, semi conducting, catalytic and various other physico chemical properties. The solubility of phthalocyanines can be increased either by changing the number and nature of the substitutents or by changing the central metal ion. Ligation of the central metal ion will also enhance the solubility. In the present investigation, it was planned to synthesize various metal phthalocyanines containing different substitutents at particular positions, so that symmetrically tetra substituted derivatives will be prepared and their structural investigations will be carried out by using various physicochemical techniques. Hence it was found desirable to synthesize and characterize tetra anilido 2,9,16,23 substituted Ni Phthalocyanine in order to exploit the spectral, thermal stability and electrochemical characteristics and like other properties and hence the present study has been undertaken. This study may give greater insight on the properties of the unique character of Ni Phthalocyanine Derivatives and their potential applications.
Author: Jianzhuang Jiang
Publisher: Springer
ISBN: 3642047521
Category : Science
Languages : en
Pages : 329
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Book Description
Phthalocyanines exhibit intriguing physic-chemical properties that render them important as a class of molecular functional materials. In addition to their traditional applications as dyes and pigments, more recently their use as the organic semiconductors, photodynamic therapy medicines, non-linear optical materials, catalysts for the photo oxidation, optical recording materials, and gas sensors attracts great research interests in these tetrapyrrole species.
Author: Herman C. Y. Lam
Publisher:
ISBN:
Category : Electrochemistry
Languages : en
Pages : 306
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Author: Yuping Bao
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 0
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Hierarchically porous carbon and faujasite are two supports in which metal phthalocyanines are incorporated for evaluation as heterogeneous catalysts. Water-soluble metal phthalocyanine metal phthalocyanine tetra carboxylate/acid (MPCTC), anionic phthalocyanine, amphiphilic phthalocyanine tetra PEGylated metal phthalocyanine (TPEGMPC), and neutral phthalocyanine were synthesized and incorporated into hierarchically porous carbon (HPC) using a co-gelation method. The metals explored with both phthalocyanines were, M = Ni, Cu, Co, Fe, Ru, and VO. The tetra PEGylated metal phthalocyanines explored had peg molecular weights of 50, 200, 400 and 600. The synthesis of MPCTC used trimellitic acid as starting material in a one pot process. It was found that the anionic form of phthalocyanine is not soluble in the solvent used for HPC formation at low pH but soluble at high pH. The synthesis of TPEGMPC was through a two-step process starting from 4-nitrophthalonitrile in which a metal ion behaves as a template that facilitates the tetramerization/cyclization process. TPEGMPC was found insoluble or only slightly soluble for the lower peg chain lengths but solubility was increased with increasing peg chain length. Formation of the PEG-1000 was not possible as cyclization did not occur with PEG -1000. HPC was prepared by a resorcinol/formaldehyde polymerization process to which the non-ionic surfactant F-127, was added to give mesopore formation. 1,6-diaminohexane (DAH) was added as a structure directing agent to give macropores. After the polymerization is completed in a curing step, the polymer was converted to a hierarchically porous carbon by pyrolysis at 500 ℗ʻC. HPC synthesis was carried out with addition of various MCMPC's and of TPEGMPCs. It was observed that after the curing step, MPCTC had separated from the bulk of the material and been spatially concentrated at the bottom of the sample. Similar phase separation was observed with the shortest peg chain length TPegMPC, while with higher peg chain length uniform color in the material was observed. Physical characterization of the carbon incorporating TPEGMPCs was done by SEM, TEM, XRD, gas absorption, UV-Vis, and FTIR. These carbons were evaluated as catalysts for oxidation of cyclohexene and reduction of p-nitrophenol. For both copper and nickel TPEGMPCs, large metal nanoparticles were observed for the 200 and 600 molecular weight TPEGMPCs. The 400 molecular weight sample showed much smaller nanoparticles, about 1/5th to 1/10 as large. The catalytic activity did not follow this trend, with the activity decreasing as the Peg molecular weight increased. Metal perfluoro phthalocyanines (MPfPC) were synthesized with the M=Fe and VO using tetrafluoro phthalonitrile as starting material. Viable synthesis procedures were developed by modifying an established synthesis route. Both MPfPC and MPCTC were successfully incorporated into a zeolite sodium faujasite by adding the phthalocyanine to the synthesis gel from which the sodium faujasite is grown.
