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2,516 Newest Publications about the topic dyes

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Determination of Hyoscine Butylbromide with Ag+ and Dihalogenated Fluorescein Dyes in Capsules by Resonance Rayleigh Scattering Method Coupled with Flow Injection Analysis Technique

01-Dec-2011 | Song, Yanqi; Liu, Shaopu; Liu, Zhongfang; Hu, Xiaoli, Chinese Journal of Chemistry, 2011

Abstract In pH 4.2–5.2 HOAc‐NaOAc buffer solution, Ag+ reacted with dihalogenated fluorescein (DHF) dyes to form a 1:2 anionic complex. This anionic complex could further react with hyoscine butylbromide (HBB) to form 1:1 ion‐association complex, which resulted in the significant enhancement of ...

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Probing the functional limits of the norepinephrine transporter with self-reporting, fluorescent stilbazolium dimers

30-Nov-2011 | Erika L. Smith; Adrienne S. Brown; Edward Adjaye-Mensah; James N. Wilson, Organic & Biomolecular Chemistry, 2011

A series of stilbazolium dimers were synthesized and investigated as sterically demanding ligands targeting the norepinephrine transporter (NET). The environmentally sensitive fluorescence of the dyes enables their use as self-reporting ligands; binding to and displacement from NET can be ...

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D-π-A Dye System Containing Cyano-Benzoic Acid as Anchoring Group for Dye-Sensitized Solar Cells

29-Nov-2011 | Masataka Katono; Takeru Bessho; Sheng Meng; Robin Humphry-Baker; Guido Rothenberger; Shaik M. Zakeeruddin; Efthimios ..., Langmuir, 2011

A D-π-A dye (KM-1) incorporating cyano-benzoic acid as a new acceptor/anchoring group has been synthesized for dye-sensitized solar cells (DSCs) with a high molar extinction coefficient of 66 700 M–1 cm–1 at 437 nm. Theoretical calculations show that the hydrogen bond between −CN and surface ...

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Surface-Treated TiO2 Nanoparticles for Dye-Sensitized Solar Cells with Remarkably Enhanced Performance

29-Nov-2011 | Xukai Xin; Margaret Scheiner; Meidan Ye; Zhiqun Lin, Langmuir, 2011

Dye-sensitized solar cells (DSSCs) were prepared by capitalizing on mesoporous P-25 TiO2 nanoparticle film sensitized with N719 dyes. Subjecting TiO2 nanoparticle films to TiCl4 treatment, the device performance was improved. More importantly, O2 plasma processing of TiO2 film that was not ...

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Synthesis of Near-IR Fluorescent Oxazine Dyes with Esterase-Labile Sulfonate Esters

28-Nov-2011 | Steven M. Pauff; Stephen C. Miller, Organic Letters, 2011

Near-IR oxazine dyes are reported that contain sulfonate esters which are rapidly cleaved by esterase activity to unmask highly polar anionic sulfonates. Strategies for the synthesis of these dyes included the development of milder dye condensation conditions with improved functional ...

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Comparing spiro-OMeTAD and P3HT hole conductors in efficient solid state dye-sensitized solar cells

25-Nov-2011 | Lei Yang; Ute B. Cappel; Eva L. Unger; Martin Karlsson; Karl Martin Karlsson; Erik Gabrielsson; Licheng Sun; Gerrit ..., Physical Chemistry Chemical Physics, 2011

Two hole conductor materials, spiro-OMeTAD and P3HT, were compared in solid-state dye-sensitized solar cells. Two organic dyes containing one anchor unit (D35) or two anchor units (M3) were used in the comparison. Absorbed photon to current conversion efficiency close to unity was obtained for ...

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Shape and localization of soliton waves in the triplet excited state of polymethine dyes

23-Nov-2011 | A. D. Kachkovskii, Theoretical and Experimental Chemistry, 2011

A quantum-chemical study was carried out on the shape and localization of solitons in polymethine dyes in the triplet excited state. The transition of ions of polymethine dyes to this state was shown to give rise to two-component electron density waves of opposite spin being in the opposite phase ...

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Multifunctional Core–Shell Nanoparticles: Discovery of Previously Invisible Biomarkers

23-Nov-2011 | Davide Tamburro; Claudia Fredolini; Virginia Espina; Temple A. Douglas; Adarsh Ranganathan; Leopold Ilag; Weidong Zh ..., Journal of the American Chemical Society, 2011

Many low-abundance biomarkers for early detection of cancer and other diseases are invisible to mass spectrometry because they exist in body fluids in very low concentrations, are masked by high-abundance proteins such as albumin and immunoglobulins, and are very labile. To overcome these ...

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Toward Panchromatic Organic Functional Molecules: Density Functional Theory Study on the Electronic Absorption Spectra of Substituted Tetraanthracenylporphyrins

23-Nov-2011 | Dongdong Qi; Jianzhuang Jiang, Journal of Physical Chemistry A, 2011

To achieve full solar spectrum absorption of organic dyes for organic solar cells and organic solar antenna collectors, a series of tetraanthracenylporphyrin derivatives including H2(TAnP), H2(α-F4TAnP), H2(β,β′-F8TAnP), H2(γ,γ′-F8TAnP), H2(δ,δ′-F8TAnP), H2[α-(NH2)4TAnP], H2[β,β′-(NH2)8TAnP], ...

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Review on Modified TiO2 Photocatalysis under UV/Visible Light: Selected Results and Related Mechanisms on Interfacial Charge Carrier Transfer Dynamics

17-Nov-2011 | S. Girish Kumar; L. Gomathi Devi, Journal of Physical Chemistry A, 2011

Titania is one of the most widely used benchmark standard photocatalysts in the field of environmental applications. However, the large band gap of titania and massive recombination of photogenerated charge carriers limit its overall photocatalytic efficiency. The former can be overcome by ...

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