نتایج جستجو برای: zn ii phthalocyanine

تعداد نتایج: 615658  

Journal: :ACS nano 2017
Tika R Kafle Bhupal Kattel Samuel D Lane Ti Wang Hui Zhao Wai-Lun Chan

Two-dimensional transition-metal dichalcogenides (TMD) can be combined with other materials such as organic small molecules to form hybrid van der Waals heterostructures. Because of different properties possessed by these two materials, the hybrid interface can exhibit properties that cannot be found in either of the materials. In this work, the zinc phthalocyanine (ZnPc)-molybdenum disulfide (...

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2017
Ahmed El-Refaey Shaban Y Shaban Maged El-Kemary Mohamed E El-Khouly

A perylene derivative, namely N,N'-bis(2(trimethylammonium iodide)ethylene)perylene-3,4,9,10-tetracarboxyldiimide (TAIPDI) forms nanoscale columnar stacks in water that have been characterized by using optical absorption and emission measurements, dynamic light scattering (DLS), and transmission electron microscopy (TEM). This behaviour was compared with that of unstacked TAIPDI in methanol. As...

2001
Weiying Gao Antoine Kahn

The p-type doping of zinc phthalocyanine (ZnPc) with the highly electronegative tetrafluorotetracyanoquinodimethane (F4-TCNQ) is investigated via direct and inverse photoemission spectroscopy and in situ current–voltage (I–V ) measurement. The electron affinity of F4-TCNQ and the ionization energy of ZnPc are found to be energetically compatible with an electron transfer between the highest occ...

2003
Abimbola Ogunsipe David Maree Tebello Nyokong

The effects of solvents on the singlet oxygen, photobleaching and fluorescence quantum yields for zinc phthalocyanine (ZnPc) and its derivatives; (pyridino)zinc phthalocyanine ((py)ZnPc), zinc octaphenoxyphthalocyanine (ZnOPPc) and zinc octaestronephthalocyanine (ZnOEPc), is presented. The effects of the solvents on the ground state spectra are also discussed. The largest red shift of the Q ban...

Journal: :Biochimica et biophysica acta 1994
F Ricchelli P Nikolov S Gobbo G Jori G Moreno C Salet

Absorption and emission spectroscopic studies on Zn(II)-phthalocyanine (ZnPc) incorporated into unilamellar liposomes of dipalmitoylphosphatidylcholine, sometimes added with cholesterol or cardiolipin, and released to rat liver mitochondria via the three types of liposomal vesicles indicated that: (a) ZnPc predominantly dissolves in all lipid domains of biological membranes with the exception o...

Journal: :Molecules 2018
Chang Jin Lim Min Gyu Park Min Su Kim Jeong Hwa Han Soohaeng Cho Mann-Ho Cho Yeonjin Yi Hyunbok Lee Sang Wan Cho

The interfacial electronic structures of a bilayer of fullerene (C60) and zinc phthalocyanine (ZnPc) grown on vanadium pentoxide (V₂O₅) thin films deposited using radio frequency sputtering under various conditions were studied using X-ray and ultraviolet photoelectron spectroscopy. The energy difference between the highest occupied molecular orbital (HOMO) level of the ZnPc layer and the lowes...

Journal: :Chemical communications 2012
Mei-Rong Ke Dennis K P Ng Pui-Chi Lo

A self-quenched zinc(II) phthalocyanine dimer linked with an acid-sensitive ketal unit has been prepared, which can be activated in an acidic environment (pH = 5.0-6.5) as a result of the cleavage of the ketal linker and separation of the phthalocyanine units, resulting in enhanced fluorescence emission and singlet oxygen production.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران 1389

کمپلکس های دو فلزی ناهمسان هسته zn(ii)-cu(ii) و zn(ii)-ni(ii) با لیگاند دو جزئی دارای جایگاه شش (n4o2) و پنج کئوردینه (n3o2) با استفاده از روشی مرحله به مرحله سنتز شده اند. این مراحل شامل سنتز کمپلکس غیر حلقوی تک فلزی zn(ii) و تبدیل آن به کمپلکس درشت حلقه تک فلزی zn(ii) می باشد که حفره پنج کوئوردینه آن توسط دو پروتون اشغال شده است. در مرحله آخر با معرفی یون فلزی دوم به کمپلکس تک فلزی روی، کمپلک...

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: :journal of mining and environment 2010
r. marandi f. doulati ardejani h. amir afshar

the biosorption of heavy metals can be an effective process for the removal of such metal ions from aqueous solutions. in this study, the adsorption properties of nonliving biomass of phanerochaete chrysosporium for pb (ii) and zn (ii) were investigated by the use of batch adsorption techniques. the effects of initial metal ion concentration, initial ph, biosorbent concentration, stirring speed...

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