A5086218199- Porphyrin and Phthalocyanine Chemistry
- Metal-Catalyzed Oxygenation Mechanisms
- Magnetism in coordination complexes
- Photoreceptor and optogenetics research
- Photodynamic Therapy Research Studies
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Photochemistry and Electron Transfer Studies
- Electrochemical Analysis and Applications
- Metal complexes synthesis and properties
- Retinal Development and Disorders
- Electrocatalysts for Energy Conversion
- Oxidative Organic Chemistry Reactions
- Organic Chemistry Cycloaddition Reactions
- Neuroscience and Neural Engineering
- Photosynthetic Processes and Mechanisms
- Molecular Sensors and Ion Detection
- Surface Chemistry and Catalysis
- bioluminescence and chemiluminescence research
- Photochromic and Fluorescence Chemistry
- Catalytic Processes in Materials Science
- High-Temperature Coating Behaviors
- Polyoxometalates: Synthesis and Applications
- Gas Sensing Nanomaterials and Sensors
- Advanced Nanomaterials in Catalysis
National Institute for Materials Science
2010-2021
In-Q-Tel
2018
Tohoku University
1984-2012
Toyohashi University of Technology
2010-2011
National Institute of Advanced Industrial Science and Technology
2003
York University
1997-1999
Ricoh (Japan)
1999
Institute of Metal Research
1992-1994
Baylor College of Medicine
1983-1986
Spectral properties of metallophthalocyanines and other tetraazaporphyrins are governed mainly by the Q band which originates from π-π* transitions within ring. The position intensity is important in tailoring new phthalocyanine derivatives for particular applications. Aggregation, nature central metal, π conjugation, symmetry molecules, axial, peripheral or non-peripheral substitutions affect spectra hence molecule. This review gives a brief outline on how optical spectroscopy provides...
Abstract Optoelectronically active viscous liquids are ideal for fabricating foldable/stretchable electronics owing to their excellent deformability and predictable π-unit–based optoelectronic functions, which independent of the device shape geometry. Here we show, unprecedented ‘liquid electret’ devices that exhibit mechanoelectrical electroacoustic as well stretchability, have been prepared using solvent-free liquid porphyrins. The fluidic nature free-base alkylated-tetraphenylporphyrins...
Abstract The title complex, [Co(odmbpc)], which is a single isomer and highly soluble in common organic solvents, has been prepared investigated electrochemically spectroelectrochemically dichloromethane solutions. cyclic voltammograms of this complex at concentration ca. 6 × 10−5 mol dm−3 exhibited two reversible reduction waves E1/2 = −0.67 V (vs. ferrocenium+/ ferrocene) −1.74 V, were attributed to cobalt-centered triple-bond-centered (in peripheral substituent) reductions, respectively,...
An unusual red-shift of phthalocyanine Q-band upon aggregation in non-aqueous media has been observed for antimony(III) derivative and studied by using optical absorption magnetic circular dichroism spectroscopy.
An adjacent dibenzotetraazaporphyrin, in which two benzene units are fused to the pyrrole rings of tetraazaporphyrin skeleton, has been synthesized as a copper complex for first time and characterized by electronic absorption magnetic circular dichroism spectroscopy, cyclic voltammetry spectroelectrochemistry using an optically transparent thin layer electrochemical cell. The results were compared with those phthalocyanine analogues. title compound shows intermediate characteristics between...
Abstract Spectroscopic properties of the titled complex are reported compared to other radical bis(phthalocyaninato)lanthanoid(III) complexes. Electronic, infrared, and Ce 3d XPS spectra show that cerium in is neither tri- nor tetravalent 4f electron delocalizes a phthalocyanine π orbital.
Coupling of 4,5-diiodophthalonitrile with tert-butyldimethylsilylacetylene and a palladium catalyst gave 4,5-bis(tert-butyldimethylsilylethynyl)phthalonitrile. Cleavage the silyl moiety tetrabutylammonium fluoride 4,5-diethynylphthalonitrile, while condensation in 2-N,N-dimethylaminoethanol without or Zn ( OAc ) 2 metal-free 2,3,8,9,16,17,23,24-octakis(tert-butyldimethylsilylethynyl)phthalocyanine its zinc derivative. groups derivative an insoluble product whose 1 H NMR spectrum was...
By a mixed condensation of 1,3-bis(3″,4″-dicyanophenoxy)-2-ethyl-2-methylpropane with large amount 4,5-bis(3,3-dimethyl-1-butynyl)phthalonitrile, 1,3-bis-2″-(9″,10″,16″,17″,23″,24″-hexakis(3″,3″-dimethyl-1″-butynyl)phthalocyaninoxyl)-2-ethyl-2-methylpropane, was synthesized as binuclear phthalocyanine having single isomer. NMR studies at various temperatures and concentrations suggested that the interactions between macrocycles were dominated by intermolecular aggregation lower or high...
The first arsenic(V)-phthalocyanines, [As(tbpc)X2]+, where tbpc denotes tetra(tert-butyl)phthalocyaninate, C48H48N82– and X = F, Cl, Br) have been prepared through an appropriate oxidative addition process to a highly soluble arsenic(III) derivative, [As(tbpc)]+. Among them, [As(tbpc)F2]+ has isolated as PF6– salt. Unlike conventional metal derivatives of phthalocyanines, they show significantly red-shifted (by >1000 cm–1) Q-band facile reduction the macrocyclic ligand (redox potentials for...
Abstract By the reactions of BiX3 (X = Cl−, Br−, I−, and NO3−) with Li2(pc) (pc phthalocyaninate dianion, C32H16N82−) in dimethyl sulfoxide, N,N-dimethylformamide, acetonitrile, acetone, [Bi(pc)X] complexes have been produced. These were also produced by heating a mixture phthalonitrile. Among them, [Bi(pc)Cl] [Bi(pc)Br] isolated for first time as phthalocyanine complex group-15 elements successfully characterized elemental analyses, solution chemistry, electronic IR spectroscopy. The latter...
Abstract Electrochemical properties of the titled complex in dichloromethane (DCM) solutions have been investigated by cyclic and rotating-disk-electrode voltammetry. Two successive reversible one-electron reduction waves (E1/2 = −0.23 −0.65 V vs. ferrocene/ferricinium+, respectively) one irreversible oxidation wave (Epa 1.32 V) observed. These were assigned as phthalocyaninate-ring-centered. Ring-reduced species was generated both chemical electrochemical DCM characterized electronic...
Abstract Antimony(V)-phthalocyanine, [Sb(pc)Cl2]+ (where pc2− = phthalocyaninate, C32H16N82−), has been prepared and characterized for the first time. Of metallophthalocyanines without any substituent groups so far reported, it Q-band at longest wavelength smallest ring-reduction potential.