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Sayfa 1 itibaren 19 Sonuçlar
Fluorene-9-bisphenol exposure induces cytotoxicity in mouse oocytes and causes ovarian damage.
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Fluorene-9-bisphenol (BHPF), a substitute for bisphenol A, is a chemical component of plastics for industrial production. There is evidence that BHPF exerts an antioestrogenic effect on mice, induces endometrial atrophy and leads to adverse pregnancy outcomes. However, the effects of BHPF on oocyte
Ultrafast spectroscopy, superluminescence and theoretical modeling of a two-photon absorbing fluorene derivative.
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A comprehensive study of photophysical and photochemical properties of an unsymmetrical fluorene derivative is presented, including linear absorption, fluorescence excitation anisotropy, photochemical stability, steady-state fluorescence, and fluorescence lifetimes in organic solvents of different
Resonant enhancement of two-photon absorption in substituted fluorene molecules.
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The degenerate and nondegenerate two-photon absorption (2PA) spectra for a symmetric and an asymmetric fluorene derivative were experimentally measured in order to determine the effect of intermediate state resonance enhancement (ISRE) on the 2PA cross section delta. The ability to tune the
Differential responses in the biotransformation systems of the oyster Crassostrea gasar (Adanson, 1757) elicited by pyrene and fluorene: molecular, biochemical and histological approach - Part I.
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Polycyclic aromatic hydrocarbons (PAHs) are among the main contaminants in aquatic environments. PAHs can affect organisms due to their carcinogenic, mutagenic and/or teratogenic characteristics. Depending on the PAHs, concentration, and period of exposure, biological damage can occur leading to
Differential responses in the biotransformation systems of the oyster Crassostrea gigas (Thunberg, 1789) elicited by pyrene and fluorene: Molecular, biochemical and histological approach - Part II
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Pyrene (PYR) and fluorene (FLU) are among the sixteen priority Polycyclic Aromatic Hydrocarbons (PAH) of the United States Environmental Protection Agency and are both frequently detected in contaminated sites. Due to the importance of bivalve mollusks in biomonitoring programs and the scarce
Fluorene-based metal-ion sensing probe with high sensitivity to Zn2+ and efficient two-photon absorption.
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The photophysical, photochemical, two-photon absorption (2PA) and metal ion sensing properties of a new fluorene derivative (E)-1-(7-(4-(benzo[d]thiazol-2-yl)styryl)-9,9-bis(2-(2-ethoxyethoxy)ethyl)-9H-fluoren-2-yl)-3-(2-(9,10,16,17,18,19,21,22,23,24-decahydro-6H
Degenerate multi-photon properties of spirofluorene derivatives.
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Two- and three-photon absorption properties of the fluorene-based chromophores have been investigated. The two- and three-photon absorption cross-section are found to be increased with the strength of the electron donor groups in the order of N-ethylcarbazoyl (1), triphenylamino (2), and
The effect of side-chain length on the solid-state structure and optoelectronic properties of fluorene-alt-benzothiadiazole based conjugated polymers--a DFT study.
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Using the dispersion corrected density functional theory (DFT-D/B97D) approach, we have performed bulk solid-state calculations to investigate the influence of side-chain length on the molecular packing and optoelectronic properties of poly (9,9-di-n-alkylfluorene-alt-benzothiadiazole) or FnBT's
Efficient photochromic transformation of a new fluorenyl diarylethene: one- and two-photon absorption spectroscopy.
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Efficient reversible phototransformation of a new diarylethene-fluorene derivative, 1,2-bis(5-(9,9-didecyl-7-nitro-9H-fluoren-2-yl)-2-methylthiophen-3-yl)cyclopent-1-ene (1), was demonstrated in organic media under low-intensity laser excitation. Linear photophysical characterization of 1 was
Cloning of dfdA genes from Terrabacter sp. strain DBF63 encoding dibenzofuran 4,4a-dioxygenase and heterologous expression in Streptomyces lividans.
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A dibenzofuran (DF)-degrader Terrabacter sp. strain DBF63 harbors the dbfA and dbfBC genes for DF degradation and the fln-dbfA, pht, and pca gene clusters for the utilization of fluorene (FN) as a sole carbon source. From this strain, dfdA1, the gene encoding the second DF dioxygenase was detected
High-Efficiency Perovskite Light-Emitting Diodes with Improved Interfacial Contact
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Unbalanced charge injection is one of the major issues that hampers the efficiency of perovskite light-emitting diodes (PeLEDs). Through engineering the device structure with multiple hole transport layers (HTLs), i.e. poly (9,9-dioctyl-fluorene-co-N-(4-butylphenyl) dipheny-lamine)
Highly efficient organic light emitting diodes formed by solution processed red emitters with evaporated blue common layer structure.
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We prepared highly-efficient solution-processed red phosphorescent organic light emitting diodes (PHOLEDs) with a blue common layer structure that can reasonably confine the triplet excitons inside of the red emission layer (EML) with the assistance of a bipolar exciton blocking layer. The red
Dynamic NMR studies of a potential chiroptical switch based on dithiocarbamate-iminodithiolane interconversion.
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[reaction: see text]. Variable temperature NMR spectra of the chiral spiro[(4-N,N-dimethyldithiocarbamato)-(2-N,N-dimethylimino)-1,3-dithiolane-5,9'-xanthene] show complex dynamics including degenerate interconversion of the dithiocarbamate and iminodithiolane groups. The rate of this switching
Two-photon absorption and time-resolved stimulated emission depletion spectroscopy of a new fluorenyl derivative.
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The synthesis, comprehensive linear photophysical characterization, two-photon absorption (2PA), steady-state and time-resolved stimulated emission depletion properties of a new fluorene derivative, (E)-1-(2-(di-p-tolylamino)-9,9-diethyl-9H-fluoren-7-yl)-3-(thiophen-2-yl)prop-2-en-1-one (1), are
Dynamics of fluorescence depolarisation in star-shaped oligofluorene-truxene molecules.
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Star-shaped molecules are of growing interest as organic optoelectronic materials. Here a detailed study of their photophysics using fluorescence depolarisation is reported. Fluorescence depolarisation dynamics are studied in branched oligofluorene-truxene molecules with a truxene core and
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