Articles with "xanthene" as a keyword



Nonlinear absorption of some thiazine, xanthene, and carbocyanine dyes

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Published in 2018 at "Optik"

DOI: 10.1016/j.ijleo.2017.11.083

Abstract: Abstract The saturated and two-photon absorption of various classes of heterocyclic dyes [thiazine (thionine), xanthene (erythrosine), and carbocyanine (3,3′-di-(γ-sulfopropyl)-4,4′,5,5′-dibenzo-9-ethylthiacarbocyaninebetaine pyridinium salt, DEC)] possessing optical absorption in the 500–680 nm range were measured at the wavelengths of… read more here.

Keywords: absorption; xanthene; two photon; photon absorption ... See more keywords

Low-valent iron and cobalt complexes supported by a rigid xanthene-based disilylamido ligand

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Published in 2020 at "Polyhedron"

DOI: 10.1016/j.poly.2020.114420

Abstract: Abstract The dianionic ligand TIPSDAX (2,7-di-tert-butyl-9,9-dimethyl-N4,N5-bis(triisopropylsilyl)-4,5-diamido-9H-xanthene) was synthesized and employed to support low-valent first-row transition metal complexes featuring iron(II) and cobalt(II). These neutral complexes were studied structurally and electrochemically. Cyclic voltammetry revealed a variety of… read more here.

Keywords: xanthene; cobalt; low valent; ligand ... See more keywords
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Thienylpiperidine Donor NIR Xanthene-Based Dye for Photoacoustic Imaging.

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Published in 2021 at "Organic letters"

DOI: 10.1021/acs.orglett.1c02862

Abstract: Few xanthene-based near-infrared (NIR) photoacoustic (PA) dyes with absorbance >800 nm exist. As accessibility to these dyes requires long and tedious synthetic steps, we designed a NIR dye (XanthCR-880) with thienylpiperidine donors and a xanthene… read more here.

Keywords: nir xanthene; xanthene; thienylpiperidine donor; xanthene based ... See more keywords

Synthesis of Regular Ladder-Type Fluorenylidene-Xanthene Oligomers via Nucleophilic Aromatic Substitution Reaction.

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Published in 2024 at "Organic letters"

DOI: 10.1021/acs.orglett.4c03779

Abstract: Fluorenylidene-xanthene and related polycyclic systems are typical examples of bistricyclic aromatic enes (BAEs); however, polycyclic systems of fluorenylidene-xanthene are relatively scarce. Here we synthesized a series of novel ladder-type polycyclic systems containing fluorenylidene-xanthene units, differing… read more here.

Keywords: reaction; nucleophilic aromatic; fluorenylidene xanthene; ladder type ... See more keywords

Novel poly(imide-ether)s based on xanthene and a corresponding composite reinforced with a GO grafted hyperbranched polymer: fabrication, characterization, and thermal, photophysical, antibacterial and chromium adsorption properties

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Published in 2020 at "New Journal of Chemistry"

DOI: 10.1039/d0nj03126g

Abstract: High-performance polyimides (PIs) with ether linkages and trifluoromethyl (–CF3) groups based on xanthene were designed and synthesized via a polycondensation reaction of novel diamine monomers with available aromatic dianhydrides. The structure of the synthesized compounds… read more here.

Keywords: xanthene; poly imide; imide ether; novel poly ... See more keywords

Bi- and trimetallic complexes with macrocyclic xanthene-4,5-diNHC ligands.

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Published in 2022 at "Dalton transactions"

DOI: 10.1039/d1dt03857e

Abstract: Three different types of bimetallic NHC-metal complexes were synthesized, whose NHC units are attached at the 4,5-positions of xanthene. The NHC units are in close proximity and are designed such that each carbene coordinates one… read more here.

Keywords: xanthene; xanthene dinhc; complexes macrocyclic; trimetallic complexes ... See more keywords

Total control of fat cells from adipogenesis to apoptosis using a xanthene analog

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Published in 2017 at "PLoS ONE"

DOI: 10.1371/journal.pone.0179158

Abstract: Overcrowded adipocytes secrete excess adipokines and cytokines under stress, which results in a deregulated metabolism. This negative response to stress increases the possibility of obesity and several of its associated diseases, such as cancer and… read more here.

Keywords: total control; xanthene; apoptosis; xanthene analog ... See more keywords

Characterization and Interaction with Biomembrane Model of Benzo[k,l]xanthene Lignan Loaded Solid Lipid Nanoparticles

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Published in 2022 at "Membranes"

DOI: 10.3390/membranes12060615

Abstract: Benzo[k,l]xanthene lignans are a group of rare natural products belonging to the class of polyphenols with promising biological activities and are studied as potential chemotherapeutic agents. The lipophilic character of a xanthene core makes these… read more here.

Keywords: lignan; benzo xanthene; sln; xanthene ... See more keywords

Controlled Synthesis of Luminescent Xanthene Dyes and Use of Ionic Liquid in Thermochromic Reaction

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Published in 2022 at "Molecules"

DOI: 10.3390/molecules27103092

Abstract: In this study, we demonstrate six novel xanthene derivatives and their spectroscopic and chemical properties. The presented synthesis examination allowed us to obtain two different compounds during one step, with open and closed lactone rings… read more here.

Keywords: reaction; synthesis; controlled synthesis; ionic liquid ... See more keywords