vanadium phthalocyanine absorption

VANADIUM PHTHALOCYANINE COMPOUNDS AND NEAR

2009-11-5 · The near-infrared absorption vanadium phthalocyanine compounds have chemical formula 1. In the chemical formula 1: A2, A3, A6, A7, A10, A11, A14, and A15 individually represent OR1, SR2, or a halogen atom, wherein at least four thereof represent OR1 A1, A4, A5, A8, A9, A12, A13, and A16 individually represent OR1, SR2, NR3R4,or a halogen atom ...

US8669358B2 - Vanadium phthalocyanine compounds

infrared absorption vanadium phthalocyanine phthalocyanine compound vanadium infrared Prior art date 2008-12-31 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires 2029-11-23 Application ...

VANADIUM PHTHALOCYANINE COMPOUNDS AND NEAR

2009-11-5 · A novel vanadium phthalocyanine compound with low absorptivity in the visible light region and high absorptivity in the near-infrared light region, and a near-infrared absorption filter using the same are disclosed. The near-infrared absorption vanadium phthalocyanine compound is represented by Formula 1 of Claim 1.

VANADIUM PHTHALOCYANINE COMPOUNDS AND NEAR

2009-11-5 · Disclosed are novel vanadium phthalocyanine compounds with low absorption efficiency in the visible light domain and high absorption efficiency in the near-infrared light domain, and a near-infrared absorption filter using the same. The near-infrared absorption vanadium phthalocyanine compounds have chemical formula 1. In the chemical formula 1: A2, A3, A6, A7, A10, A11, A14, and

EP2380894A2 - Vanadium phthalocyanine compounds and

A novel vanadium phthalocyanine compound with low absorptivity in the visible light region and high absorptivity in the near-infrared light region, and a near-infrared absorption filter using the same are disclosed. The near-infrared absorption vanadium phthalocyanine compound is represented by Formula 1 of Claim 1. In Formula 1, A 2 , A 3 , A 6 , A 7 , A 10 , A 11 , A 14 and A 15 are ...

Synthesis and electrochemical characterisation of a near ...

2008-9-10 · The synthesis of an α-substituted phthalocyanine oxo vanadium(IV) 1,4,8,11,15,18,22,25-octapentathiophthalocyanine (4) which absorbs at 850. nm in dichloromethane is reported.The complex is purple in colour and becomes green on reduction.

Triplet-triplet absorption spectra of phthalocyanine and ...

triplet--triplet absorption of the free base of phthalocyanine and its complexes with aluminum~ gallium, and vanadium in oxygen-free solutions at room temperature using laser-photolysis equipment.

Optical and non-linear optical properties of vanadium ...

2014-2-11 · The optical and non-linear optical properties of peripheral-substituted vanadium oxide phthalocyanine (VOPc) film and substituted VOPc/polymer composite film were investigated using stationary and transient spectroscopy techniques. The absorption Q band of the VOPc/polymer composite film shows a red shift relative to that of the peripheral-substituted VOPc film, revealing the

Direct Synthesis of Vanadium Phthalocyanine and Its ...

2015-6-2 · *SSupporting Information ABSTRACT: Vanadium phthalocyanine (VPc) monolayers and multilayers were synthesized on Ag(111), and the electronic and magnetic states of an unachieved VPc with a divalent state of V were investigated. The VPc monolayer was fabricated by directly depositing the V atoms on a metal-free phthalocyanine (H 2

L-edge X-ray absorption study of mononuclear vanadium ...

A series of mononuclear V(V), V(IV) and V(III) complexes were investigated by V L-edge near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The spectra show significant sensitivity to the vanadium oxidation state and the coordination

Oxo-vanadium (IV) phthalocyanine implanted onto the ...

2021-3-15 · Oxo-vanadium (IV) phthalocyanine implanted onto the modified SBA-15 as a catalyst for direct hydroxylation of benzene to phenol in acetonitrile-water medium: A kinetic study. ... The absorption spectra of TNVOPc and TAVOPc are shown in Fig. 2 (part a). As can be seen, ...

Synthesis and electrochemical characterisation of a near ...

2008-9-10 · The synthesis of an α-substituted phthalocyanine oxo vanadium(IV) 1,4,8,11,15,18,22,25-octapentathiophthalocyanine (4) which absorbs at 850. nm in dichloromethane is reported.The complex is purple in colour and becomes green on reduction.

Direct Synthesis of Vanadium Phthalocyanine and Its ...

2015-6-2 · ABSTRACT: Vanadium phthalocyanine (VPc) monolayers and multilayers were synthesized on Ag(111), and the electronic and magnetic states of an unachieved VPc with a divalent state of V were investigated. The VPc monolayer was fabricated by directly depositing the V atoms on a metal-free phthalocyanine (H 2 Pc) monolayer under ultra-high-vacuum ...

Direct Synthesis of Vanadium Phthalocyanine and Its ...

2019-5-25 · Vanadium phthalocyanine (VPc) monolayers and multilayers were synthesized on Ag(111), and the electronic and magnetic states of an unachieved VPc with a divalent state of V were investigated. The VPc monolayer was fabricated by directly depositing the V atoms on a metal-free phthalocyanine (H2Pc) monolayer under ultra-high-vacuum conditions.

Optical and non-linear optical properties of vanadium ...

2014-2-11 · The optical and non-linear optical properties of peripheral-substituted vanadium oxide phthalocyanine (VOPc) film and substituted VOPc/polymer composite film were investigated using stationary and transient spectroscopy techniques. The absorption Q band of the VOPc/polymer composite film shows a red shift relative to that of the peripheral-substituted VOPc film, revealing the

L-edge X-ray absorption study of mononuclear vanadium ...

A series of mononuclear V(V), V(IV) and V(III) complexes were investigated by V L-edge near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The spectra show significant sensitivity to the vanadium oxidation state and the coordination environment surrounding the vanadium

Phthalocyanine - an overview | ScienceDirect Topics

Copper phthalocyanine has a four-fold axis of symmetry in common with the porphin system, and has two absorption bands in or close to the visible region, designated Q-bands and B-bands. The Q-band, in this case, is the most important and most intense occurring at 657.5 nm, with a molar extinction coefficient close to 100 000 dm 3 mol −1 cm −1 .

Recent progress in porphyrin- and phthalocyanine ...

2020-9-3 · In this review, we summarize the application of porphyrins and phthalocyanines in perovskite solar cells to date. Since the first porphyrin- and phthalocyanine-based perovskite solar cells were reported in 2009, their power conversion efficiency has dramatically increased from 3.9% to over 20%. Porphyrins and phtha 2020 Reviews in RSC Advances

Absorption, transport, content, and subcellular ...

2020-4-1 · Vanadium is a trace element that plays a crucial role in cellular metabolism in animals, including humans. Plants readily absorb it from the soil (Imtiaz et al., 2018). Vanadium, even in trace amounts, promotes the synthesis of chlorophyll and the absorption of potassium and assimilation of nitrogen, thus improving the growth of plants.

Polarization Conversion and Absorption of Multifunctional ...

2020-11-11 · In this paper, we propose a kind of multi-functional all-dielectric metamaterial (ADMM), which is composed of vanadium dioxide (VO 2), silicon, and silicon dioxide.Two functions of polarization conversion and wave absorption are realized by using the phase change characteristics of VO 2.When the VO 2 is in the insulating state, the structure has the function of transmission polarization ...

Synthesis and properties of N-methylimidazole solvates

2019-8-20 · vanadium(II), chromium(II) and iron(II) phthalocyanines. Strong NIR absorption in VII(MeIm)2(Pc2-) ... vanadium(II) phthalocyanine and its solvates as well ascrystal structures of - ... absorption in the NIR range and multiple bands in the visible . COMMUNICATION Journal Name 2

Stability, electronic structure, and magnetic moment of ...

2021-8-1 · The studies of electronic and magnetic properties of V-Pc molecule adsorbed onto Au(1 1 1) surface are based on ab-initio calculations in the framework of density functional theory.We compute adsorption energies, investigate interaction mechanisms between constituents of the hybrid system consisting of V-Pc molecule and Au surface, and determine geometry changes in the system,

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observations on certain phthalocyanine solutions (chloro-aluminium and vanadium phthalocyanine in chloronaphthalene). The intense absorption band (which the laser saturates) corresponds to a singlet-singlet electronic transition of large cross section bet ween i Now at the Electricity Council Research Centre, Capenhurst, Chester. 743

Electronic excitations in vanadium oxide phthalocyanine ...

2005-9-15 · The electronic structure of the organic semiconductor vanadium oxide phthalocyanine has been studied using resonant inelastic X-ray scattering and X-ray emission spectroscopy. The vanadyl species in the films is shown to be highly localized, and good agreement between the measurements and a density functional calculation is obtained.

Preparation and evaluation of phthalocyanine/vanadium ...

Field-effect transistors were prepared with magnesium phthalocyanine (MgPc) and vanadium pentoxide (V 2 O 5). Vapor treatments of several organic solvents were carried out for MgPc thin films. The UV-vis absorption spectra, surface morphologies, X-ray diffraction patterns

Phthalocyanine- and Calixarene-Templating Effect on the ...

2011-7-15 · The templating effect of the phthalocyanine ligands was found to be much less significant at twice the vanadium load (0.52 V/nm 2), when initial active sites on the alumina surface become saturated, and selectivity of vanadate deposition decreases.

Intestinal absorption and secretion of radioactive ...

Vanadium in the metavanadate form (VO3-) is a powerful inhibitor of Na+, K+-ATPase. Because of the similarity between the oxy anions of vanadium and phosphorus, it was of interest to see whether Al(OH)3 would restrict the intestinal absorption of vanadium, as it does that of phosphorus. VO3- was extensively bound to a suspension of Al(OH)3 at ...

Polarization Conversion and Absorption of Multifunctional ...

2020-11-11 · In this paper, we propose a kind of multi-functional all-dielectric metamaterial (ADMM), which is composed of vanadium dioxide (VO 2), silicon, and silicon dioxide.Two functions of polarization conversion and wave absorption are realized by using the phase change characteristics of VO 2.When the VO 2 is in the insulating state, the structure has the function of transmission polarization ...

Phase identification of vanadium oxide thin films prepared ...

The chemical and local structures of vanadium oxide (VO x) thin films prepared by atomic layer deposition (ALD) were investigated by soft X-ray absorption spectroscopy.It is shown that the as-deposited film was a mixture of VO 2 and V 2 O 5 in disordered form, while the chemistry changed significantly after heat treatment, subject to the different gas environment.

Light Absorption Properties and Electronic Band Structures ...

2020-1-7 · Light Absorption Properties and Electronic Band Structures of Lead‐Vanadium Oxyhalide Apatites Pb5(VO4)3X (X = F, Cl, Br, I) Masashi Nakamura. Tokyo Institute of Technology, Chemistry, JAPAN. Search for more papers by this author. Kenji

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