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2,325 Newest Publications about the topic dyes

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A Unique Paradigm for a Turn-ON Near-Infrared Cyanine-Based Probe: Noninvasive Intravital Optical Imaging of Hydrogen Peroxide

22-Jun-2011 | Naama Karton-Lifshin; Ehud Segal; Liora Omer; Moshe Portnoy; Ronit Satchi-Fainaro; Doron Shabat, Journal of the American Chemical Society, 2011

The development of highly sensitive fluorescent probes in combination with innovative optical techniques is a promising strategy for intravital noninvasive quantitative imaging. Cyanine fluorochromes belong to a superfamily of dyes that have attracted substantial attention in probe design for ...

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Molecules, Vol. 16, Pages 5182-5193: Synthesis of Some Novel Pyrazolo[1,5-a]pyrimidine Derivatives and Their Application as Disperse Dyes

22-Jun-2011 | Alya M. Al-Etaibi; Nouria A. Al-Awadi; Morsy A. El-Apasery; Maher R. Ibrahim, Molecules, 2011

A series of novel monoazo-disperse dyes containing pyrazolo[1,5-a]pyrimidine structures were synthesized starting with the coupling reaction between ethyl cyanoacetate and 4-hydroxybenzenediazonium chloride, followed by treatment of the resulting hydrazone product with hydrazine hydrate. The ...

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Antimicrobial effect of C.I. Basic Red 18:1 and C.I. Basic Yellow 51 on some pathogenic bacteria

22-Jun-2011 | Mustafa Tutak, Fatih Gün, Fibers and Polymers, 2011

The aim of this study was to investigate the antimicrobial activity of C.I. Basic Red 18:1 (D1) and C.I. Basic Yellow 51 (D2) cationic dyes and dyed acrylic fabrics against the common pathogens Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa. C.I. Basic Red 18:1 dye was most ...

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Dyeing properties and color fastness of 100% meta-aramid fiber

22-Jun-2011 | Fibers and Polymers, 2011

Abstract Dyeing characteristics and fastness of 100 % m-aramid fiber with some commercial dyes were investigated on various dyeing conditions, such as using a swelling agent and electrolyte as auxiliaries. Among commercial dyes used, the basic dyes showed comparatively higher exhaustion yield ...

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Investigation on F–B–S tri-doped nano-TiO2 films for the photocatalytic degradation of organic dyes

22-Jun-2011 | Journal of Nanoparticle Research, 2011

Abstract F–B–S tri-doped titanium dioxide thin films on common glass were prepared by a modified sol–gel method, in which tetrabutyl titanate (Ti(OC4H9)4) was chosen as the precursor and boric acid (H3BO3), sodium fluoride (NaF), and thiourea (N2H4CS) were employed as boron, fluorine, and ...

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Suitable Labels for Molecular Imaging – Influence of Dye Structure and Hydrophilicity on the Spectroscopic Properties of IgG Conjugates

21-Jun-2011 | Jutta Pauli; Markus Grabolle; Robert Brehm; Monika Spieles; Franziska M. Hamann; Matthias Wenzel; Ingrid Hilger; Ute ..., Bioconjugate Chemistry, 2011

Aiming at the design of highly brilliant NIR emissive optical probes, e.g., for in vivo near-infrared fluorescence imaging (NIRF), we studied the absorption and fluorescence properties of the asymmetric cyanines Dy678, Dy681, Dy682, and Dy676 conjugated to the model antibody IgG. The ultimate ...

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Fine‐Tuning of Triarylamine‐Based Photosensitizers for Dye‐Sensitized Solar Cells

20-Jun-2011 | Céline Olivier; Frédéric Sauvage; Laurent Ducasse; Frédéric Castet; Michael Grätzel; Thierry Toupance, ChemSusChem, 2011

Abstract The synthesis of a series of novel organic photosensitizers based on modified triarylamine motives has been achieved. The new “push‐pull” dyes, bearing one to three naphthyl units in place of phenyl rings, have been successfully obtained following original synthetic routes. The ...

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Multiplex Detection of Endonucleases by Using a Multicolor Gold Nanobeacon

20-Jun-2011 | Huang, Yong; Zhao, Shulin; Liang, Hong; Chen, Zhen‐Feng; Liu, Yi‐Ming, Chemistry - A European Journal, 2011

Abstract A highly sensitive and selective assay based on a novel enzyme‐responsive multicolor gold nanobeacon has been developed for the multiplex detection of endonucleases, a group of very important nucleases. The nanobeacon takes advantage of the high specificity of DNA cleavage reactions ...

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New 8‐Amino‐BODIPY Derivatives: Surpassing Laser Dyes at Blue‐Edge Wavelengths

20-Jun-2011 | Bañuelos, Jorge; Martín, Virginia; Gómez‐Durán, C. F. Azael; Córdoba, Isma ..., Chemistry - A European Journal, 2011

Abstract The development of highly efficient and stable blue‐emitting dyes to overcome some of the most important shortcomings of available chromophores is of great technological importance for modern optical, analytical, electronic, and biological applications. Here, we report the design, ...

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Selectivity in the Photocatalytic Properties of the Composites of TiO2 Nanoparticles with B- and N-doped Graphenes

18-Jun-2011 | K., Gopalakrishnan , Hrushikesh M., Joshi , Prashant, Kumar , L.S., Panchakarla , C.N.R., Rao, Chemical Physics Letters, 2011

Photodegradation of two dyes, methylene blue (MB) and rhodamine B (RB), adsorbed over composites of TiO2 nanoparticles with pure graphene as well as boron- and nitrogen-doped graphenes has been investigated. MB which is a good electron donor and has a low ionization energy interacts strongly with ...

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