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Showing 1 to 20 of 43 for “"Phthalocyanines"”.
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Polymeric Phthalocyanines
Made available in DSpace on 2014-12-05T19:36:47Z (GMT). No. of bitstreams: 1 0025269.pdf: 3743052 bytes, checksum: 75e445d00387b3db64627ce4cfa91bf8 (MD5) Previous issue date: 1957
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Structural Chemistry of Silicon Phthalocyanines
Structures of a number of silicon phthalocyanines have been investigated using both experimental and theoretical methods. Single crystal structures have been determined for some of these silicon phthalocyanines. Various theoretical methods, including the density functional theory (DFT), …
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Synthesis of novel asymmetrically substituted phthalocyanines
Phthalocyanines are among the more promising second generation photosensitizers for photodynamic therapy. Our research group has consistently shown that the more amphiphilic of these compounds display improved biological properties as photosensitizers for photodynamic therapy. However, synthetic …
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Synthesis of novel red-shifted phthalocyanines
We prepared four types of red-shift phthalocyanines: 2,9,16,23-tetra(hetp-t-1 -enyl) phthalocyanine; 2,9,16,23-tetrachloro-3,10,17,24-tetra(3-methoxypro1p --y nyl) phthalocyanine; 3,4,12,13,2 1,22,30,3 l-octa(alkyny1) and octa(alkeny1) naphthalocyanines. It was found that the each conjugated …
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Fluorinated Metallo Phthalocyanines for Chemical and Biological Catalysis
… the 3<sup>rd</sup> generation fluorinated phthalocyanines. Fluorophthalocyanines exhibiting a ratio, ρ, of aliphatic/aromatic fluoro groups, ρ, ρ does not equal to 1.0 constitute the 2<sup>nd</sup> generation fluorinated phthalocyanines.</p> <p>The amino functionalized complexes retain …
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Synthesis and characterization of binuclear and unsymmetrical phthalocyanines
<p>"The metal free planar binuclear phthalocyanines sharing a benzene or naphthalene ring have been synthesized and characterized. The position of Q band of binuclear phthalocyanine sharing a naphthalene ring is red shifted compared to binuclear phthalocyanine sharing a benzene ring. The compounds …
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Synthesis and Characterization of Organometallic Cyanides and Phthalocyanines
pi-arene complexes of octaalkoxyphthalocyanines and metallophthalocyanines were prepared by reaction of soluble phthalocyanine (H2PcOR) and metallophthalocyanine (M(PcOR)) ligands with Cp*Ru(NCMe)3 +. The molecular structure of {Cp*Ru[eta6-Ni(PcOBu)]}PF 6 consists of a dimer of two cofacially …
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I. Polymeric Basic Beryllium Carboxylates. Ii. Polymeric Phthalocyanines
Made available in DSpace on 2014-12-05T19:36:54Z (GMT). No. of bitstreams: 1 5805451.pdf: 4567900 bytes, checksum: 6df82e8162b58ec6975ca6796a58ae69 (MD5) Previous issue date: 1958
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Covalently Linked Dyads and Triads of Phthalocyanines and Porphyrins
The phthalocyanines are a family of intensively coloured compounds, with some important properties and are classified as important materials for many applications. Structurally, a phthalocyanine is similar to a porphyrin. In chapter one, a brief introduction of their synthesis, properties, and …
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Thin films of non-peripherally substituted liquid crystalline phthalocyanines A
… noticed in the isostructural octyl substituted phthalocyanines on contrary to a reduced conductivity in hexyl substituted one. An optical band shift of the C8LuPc2 and C8GdPc2 thin films occurred on oxidation by bromine vapour. Oxidations of Pc-coated ITO were also achieved by applying potential …
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Porphyrins and phthalocyanines as chemical visualisation reagents for latent fingerprint development
… thesis was the investigation of porphyrins and phthalocyanines as potential reagents for the development of latent fingerprints. Porphyrins and phthalocyanines are structurally related compounds which have many features in common, including the ability to substitute a wide variety of metal ions …
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Synthesis of Phthalocyanines and Porphyrazines for Photodynamic Therapy and Bioalytical Purposes
A series of novel symmetric and asymmetric phthalocyanines (Pcs) and porphyrazines (Pzs) bearing solubilizing groups and peripheral functionalities such as nitro, amine, acid, aminooxy, and azide, some of which can be used for conjugation or labeling reactions were synthesized in good yields. …
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The Electronic and Vibrational Spectroscopy of Matrix-Isolated Phthalocyanines – Experiment and Theory
Phthalocyanines (Pcs) are robust macrocyclic tetrapyrrolic molecules having distinctive dark blue to green colours. Despite their importance in industry, their optical spectroscopy has yet to be fully characterised. Low-temperature solids consisting of the rare gases or inert materials like …
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The Photophysics and Photochemistry of a series of Phthalocyanines as Potential Photosensitisers in Photodynamic Therapy
… 3 series of novel alpha octa(alkyl-substituted) phthalocyanines. Each series is defined by the distinct non-metal or metal ion centre, silicon hydroxide, zinc(II) and palladium(II). It is well documented that the phthalocyanine molecule possesses several distinct properties, including absorption …
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THE MODIFICATION OF ELECTROCHEMICAL AND PHOTOELECTROCHEMICAL PROPERTIES IN THIN FILMS OF TRI- AND TETRAVALENT METAL PHTHALOCYANINES
… chloroindium, vanadyl, and titanyl phthalocyanines) were used singly to prepare thin films (0.05-2.0 micron thickness) on gold, optically transparent substrates. The photoelectronic properties of these electrodes could be modified either by altering the growth conditions (i.e. rate …
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Synthesis, molecular and solid state structures, and magnetic properties of sandwich lanthanide phthalocyanines lacking C-H bonds
A new class of sandwich phthalocyanine (Pc) compounds without C-H bonds was synthesized and characterized. They are the bis[octakis(perfluoro i-C_3F_7) octakis(perfluoro)phthalocyaninato(2-)]M(III) complexes, formulated as (F_{64}Pc)_2MH, M = Tb, Dy, Lu, Y. Single molecular magnetic (SMM) behavior …
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The Electronic and Vibrational Spectroscopy of Metal Phthalocyanines and Metal Phthalocyanine Chlorides Isolated in Low Temperature Solids
Phthalocyanines (Pcs) are an important class of dye molecules, capable of incorporating a wide range of metal atoms into their macrocyclic cavity and can be heavily substituted on their outer carbons. These highly stable molecules play an important role not only in the commercial dye industry, but …
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The spectral and photophysical characterization of water solubilizing metal phthalocyanines for highly sensitive detection in biological studies
Efforts to improve the technology for DNA analyses stimulated the work presented here to develop a series of fluorescent probes that would aid in the increased multiplexing capabilities allowing the ability to detect multiple targets in a single measurement. Typically, spectral discrimination has …
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From Dye Sensitized Solar Cells to Organic Field Effect Transistors: A Computational Investigation into the Structural and Electronic Properties of Novel Phthalocyanines
<p>Phthalocyanines (Pc) have gained intense research attention in many diverse application areas due to their highly tunable electronic and structural properties through modification of the molecular periphery and metal center. Throughout this work a series of novel perfluoro-isopropyl substituted …
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Organic/carbon nanotubes hybrid thin films for chemical detection.
Metallophthalocyanines (MPcs) are classified as an important class of conjugated materials and they possess several advantages attributed to their unique chemical structure. Carbon nanotubes (CNT), on the other hand, are known to enhance the properties of nano-composites in the conjugated …
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