نتایج جستجو برای: zinc phthalocyanine liposome

تعداد نتایج: 83123  

2013
B. Amin S. Nazir U. Schwingenschlögl

The adsorption geometry and electronic properties of a zinc-phthalocyanine molecule on a Cu(111) substrate are studied by density functional theory. In agreement with experiment, we find remarkable distortions of the molecule, mainly as the central Zn atom tends towards the substrate to minimize the Zn-Cu distance. As a consequence, the Zn-N chemical bonding and energy levels of the molecule ar...

Journal: :The Journal of chemical physics 2009
N L Tran F I Bohrer W C Trogler A C Kummel

Density functional theory (DFT) simulations were used to determine the binding strength of 12 electron-donating analytes to the zinc metal center of a zinc phthalocyanine molecule (ZnPc monomer). The analyte binding strengths were compared to the analytes' enthalpies of complex formation with boron trifluoride (BF(3)), which is a direct measure of their electron donating ability or Lewis basici...

2003
Jung Yong Kim Allen J. Bard

An organic photovoltaic cell was fabricated, with the configuration ITO/zinc phthalocyanine (ZnPc)/N,N0-diheptyl-3,4,9,10perylenebiscarboximide (PTCDI-C7) (PTCDI)/Ga:In. PTCDI is a liquid crystal and acts as an electron acceptor organic material while ZnPc corresponds to a donor. The cell performance under illumination was examined with different organic layer thickness. A cell incorporating 25...

Journal: :The journal of physical chemistry. C, Nanomaterials and interfaces 2009
Kadir Aslan Yongxia Zhang Chris D Geddes

Fixed angle surface plasmon coupled fluorescence (SPCF) from iron thin films is demonstrated for the first time. The optimum thickness of the iron thin films was determined to be 15 nm using Fresnel calculations. The angles of minimum reflectivity for light at 496-814 nm were predicted to occur at a fixed and broad range of angles of 60-70°. Experimental corroboration of these predictions were ...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2011
Jun-Ho Yum Brian E Hardin Eric T Hoke Etienne Baranoff Shaik M Zakeeruddin Mohammad K Nazeeruddin Tomas Torres Michael D McGehee Michael Grätzel

Panchromatic response is essential to increase the light-harvesting efficiency in solar conversion systems. Herein we show increased light harvesting from using multiple energy relay dyes inside dye-sensitized solar cells. Additional photoresponse from 400-590 nm matching the optical window of the zinc phthalocyanine sensitizer was observed due to Förster resonance energy transfer (FRET) from t...

Journal: :Analytical chemistry 2010
Haixia Qin Jiangtao Ren Jiahai Wang Nathan W Luedtke Erkang Wang

A label-free detection of K(+) was developed using G-quadruplex DNA (c-Myc) modulated fluorescence enhancement of tetrakis-(diisopropylguanidino) zinc phthalocyanine (Zn-DIGP). Upon the addition of increasing concentrations of potassium, a detection limit of 0.8 μM for K(+) was easily achieved. Comparative titrations using sodium, lithium, ammonium, transition metal, or alkali earth salts revea...

2012
Denis Dolgos Andreas Schenk Bernd Witzigmann

Related Articles Effect of bending stress on structures and quantum conduction of Cu nanowires Appl. Phys. Lett. 100, 123107 (2012) Theory of charging and charge transport in “intermediate” thickness dielectrics and its implications for characterization and reliability J. Appl. Phys. 111, 054112 (2012) Evolution of deep electronic states in ZnO during heat treatment in oxygenand zinc-rich ambie...

Journal: :Journal of photochemistry and photobiology. B, Biology 2001
C Fabris G Jori F Giuntini G Roncucci

A synthetic procedure has been developed for the preparation of a Zn-phthalocyanine peripherally substituted with a dodecaborane. The absorption spectrum of the derivative is typical of the phthalocyanine chromophore. Moreover, the boronated phthalocyanine exhibits a high photosensitizing efficiency against a model biological substrate, such as N-acetyl-L-tryptophanamide, and a singlet oxygen q...

2012
Mevlüde Canlıca Ahmet Altındal

The synthesis of ball-type dinuclear Zn(II) phthalocyanine containing four 4,4′-(9H-fluorene-9,9-diyl)diphenol substituents at the non-peripheral position is presented. The structure of the synthesized compound was characterized using elemental analyzes, and UV-vis, FT-IR, H NMR and mass spectroscopies. The FF value was 0.16 and FT value was 0.72. The complex showed reasonably long triplet life...

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