نتایج جستجو برای: phthalocyanine

تعداد نتایج: 2870  

2007
R. Sai Santosh Kumar S. Venugopal Rao L. Giribabu D. Narayana Rao

We report our results on nonlinear optical properties of 2(3), 9(10), 16(17), 23(24) tetra tert-butyl phthalocyanine and 2(3), 9(10), 16(17), 23(24) tetra tert-butyl Zinc phthalocyanine studied using Z-scan technique with 800 nm femtosecond and 532 nm nanosecond pulses. Nonlinear absorption behavior in both femtosecond and nanosecond domains was studied in detail. We observed three-photon absor...

Journal: :Journal of chromatography. A 2004
Torsten Bohn Thomas Walczyk

Chlorophyll analysis at high precision and accuracy is limited by the lack of suitable, commercially available internal standards for HPLC analysis. Here, the commercially available dye zinc-phthalocyanine is presented as a new internal standard to quantify chlorophylls in vegetable foods and to detect chlorophyll degradation products. The technique was applied to chlorophyll analysis of a sele...

Journal: :Journal of photochemistry and photobiology. B, Biology 1992
G J Fowler R Devonshire

As part of a wider programme to identify novel photosensitizers for photodynamic therapy, the ability of a number of phthalocyanine dyes, including some novel copper phthalocyanine derivatives with a range of water solubilities, to produce potentially cytotoxic species in solution was examined. The experiments were performed in dimethylformamide using 1,3-diphenylisobenzofuran (DPIBF) as the sc...

Journal: :Nanoscale 2018
Luis M Arellano Luis Martín-Gomis Habtom B Gobeze Desiré Molina Cristina Hermosa María J Gómez-Escalonilla José Luis G Fierro Ángela Sastre-Santos Francis D'Souza Fernando Langa

Enriched semiconducting single-walled carbon nanotubes (SWCNT (6,5) and SWCNT (7,6)) and HiPco nanotubes were covalently functionalized with either zinc phthalocyanine or silicon phthalocyanine as electron donors. The synthetic strategy resulted in edge-on and face-on geometries with respect to the phthalocyanine geometry, with both phthalocyanines held by an electronically conducting diphenyla...

A. Yahyazadeh, V. Azimi

Copper (II) phthalocyanine and 2,9,16,23 tetrakis nitro copper (II) phthalocyaninehas been synthesized respectively from phthalonitrile and 4-nitro phthalonitrile under solvent-free condition using two different catalystsovernanodimensionalzeolites. 4-Nitro phthalonitrile synthesized from phthalimide in three steps. The newly prepared compounds have been characterized by IR, UV-Vis, 1</sup...

A. Yahyazadeh, V. Azimi

Copper (II) phthalocyanine and 2,9,16,23 tetrakis nitro copper (II) phthalocyaninehas been synthesized respectively from phthalonitrile and 4-nitro phthalonitrile under solvent-free condition using two different catalystsovernanodimensionalzeolites. 4-Nitro phthalonitrile synthesized from phthalimide in three steps. The newly prepared compounds have been characterized by IR, UV-Vis, 1</sup...

Journal: :علوم و تکنولوژی پلیمر 0
زهرا احمدی محمد حقیقت کیش ریچارد کوتک علی اصغر کتباب

photooxidation as an important process, which significantly affects the service life of the polypropylene products, has been the subject of much theoretical and experimental study. pigments used often change the light stabilities of polypropylene. out-door applications of pigmented polypr-opylene are now increasingly developed in products such as artificial grass. the aim of this work is to exa...

Journal: :Chemical communications 2009
Saisuree Prateeptongkum Irina Jovel Ralf Jackstell Nadine Vogl Christoph Weckbecker Matthias Beller

Aryl-substituted olefins react with t-butyl nitrite and sodium borohydride in the presence of iron(ii)phthalocyanine to give oximes in moderate to high yields.

Journal: :Chemical communications 2011
Emanuel Kockrick Tristan Lescouet Evgeny V Kudrik Alexander B Sorokin David Farrusseng

Metal phthalocyanine complexes encapsulated in MIL-101, and used as "ship-in-a-bottle" catalysts, show outstanding TONs in the aerobic oxidation of tetralin.

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