نتایج جستجو برای: iridium nanoparticles

تعداد نتایج: 111183  

Abdolazim Sedighi Mohammad Hadi Gholami, Ramin Jaberi Razieh Zaghian

Introduction: Brachytherapy, especially using manually after loaded Iridium-192 and Cobalt-60, can be applied as a sole treatment, as a treatment complementary to surgery, and as a local boost in combination with EBRT. The use of HDR brachytherapy catheters incorporated in removable dental molds allows repeated, highly reproducible, fractionated outpatient brachytherapy of supe...

Journal: :Inorganics (Basel) 2022

Using nanoparticles for controlled drug delivery to cancer, in response its weakly acidic environment, represents a promising approach toward increasing the effectiveness and reducing adverse effects of cancer therapy. Hence, aim this study is construct novel mesoporous silica nanoparticle (MSN)-based acidification-responsive systems targeted Herein, surface MSN covalently functionalized with I...

Journal: :Dalton transactions 2012
Yanfang Li Yang Liu Ming Zhou

Biscyclometalated iridium(III) complexes with an ancillary acetylacetone ligand, Ir(L)(2)(acac), (L = 2-(benzo[b]thiophen-2-yl)pyridine (btp), 1-phenylisoquinoline (piq), 2-phenylbenzothiazole (bt), 2-phenylpyridine (ppy), acac = deprotonated acetylacetone), demonstrate spectroscopic changes in their UV-Vis absorption and luminescent emission under acidic conditions. Such changes were found to ...

Development of a cyclometalated iridium complex with specific intramolecular hydrogen-bonding that acts as a fluorescent marker for the endoplasmic reticulum and causes photoinduced cell death† †Electronic supplementary information (ESI) available: Detailed synthesis; photophysical data (Table S1); pH dependent phosphorescence lifetime of complex C2 (Table S2); crystallographic parameters of C2; selected bond distances and angles of C2 (Table S3); cyclic voltammetric data of complexes C1–C11 (Table S4); 1H NMR spectra of ligands and complexes (Fig. S1 and S3); ESI-MS spectra of ligands and complexes (Fig. S2 and S4); fluorescence spectra of the complexes in acetonitrile and at pH 4, 7 and 9, exponential decay curve of C2 (Fig. S5); pH dependent fluorescence spectrum of complexes C1–C11 (Fig. S6); DIC and confocal fluorescence images of live MCF7 cells not treated with C2 but exposed to photoirradiation at 405 nm for 30 min; the cells were treated with DCFDA and fluorescence images were obtained at 529 nm after excitation at 495 nm (Fig. S7). ESI videos 1 and 2. CCDC 967841. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4dt00845f Click here for additional data file. Click here for additional data file. Click here for additional data file. Click here for additional data file. Click here for additional data file.

2014
Soumik Mandal Dipak K. Poria Ritabrata Ghosh Partho Sarothi Ray Parna Gupta

Cyclometalated iridium complexes have important applications as phosphorescent probes for cellular imaging due to their photophysical properties. Moreover, these properties also make them potential candidates as photosensitizers for photodynamic therapy (PDT) of tumors and skin diseases. Treatment of MCF7 breast carcinoma cells with a heteroleptic phosphorescent cyclometalated iridium(III) comp...

2011
Ulrike Pfannenschmidt Rainer Pöttgen

Needle-shaped crystals of the metal-rich phosphide Ce4Ir13.55P9 were synthesized from the elements in a lead flux (starting composition 1 : 2 : 2 : 60) at 1370 K followed by slow cooling. Ce4Ir13.55P9 crystallizes with a new orthorhombic structure type: Pnma, a = 1269.1(2), b = 399.1(1), c = 3349.9(7) pm, wR2 = 0.0722, 2025 F2 values and 139 variables. Two of the 14 crystallographic iridium sit...

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