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2,578 Newest Publications about the topic dyes

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Crystal structures and solid-state fluorescence of BODIPY dyes based on [capital Lambda]-shaped Troger's base

12-Jan-2012 | He Xi; Chun-Xue Yuan; Ye-Xin Li; Yang Liu; Xu-Tang Tao, CrystEngComm, 2012

Two Λ-shaped BODIPY dyes based on Tröger's base, 2,8-(6H,12H-5,11-methanodibenzo[b,f]diazocineylene)-di(4,4-difluoro-1,3,5,7-tetramethyl-4-bora-3a,4a-diaza-s-indacene) (DFTMB) and ...

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Dipolar 3-methoxychromones as bright and highly solvatochromic fluorescent dyes

12-Jan-2012 | Oleksandr A. Kucherak; Ludovic Richert; Yves Mély; Andrey S. Klymchenko, Physical Chemistry Chemical Physics, 2012

Herein, three environment-sensitive (solvatochromic) fluorescent dyes presenting a strong electron acceptor 3-methoxychromone unit and varied electron donor 2-aryl were developed. All three dyes showed remarkable polarity-dependent shifts of the emission maximum, which increase with extension of ...

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Sol–gel derived dye-bridged hybrid materials for white luminescence

10-Jan-2012 | Seung-Yeon Kwak, SeungCheol Yang, Na Ree Kim, Jae Hong Kim, Byeong-Soo Bae, Journal of Sol-Gel Science and Technology, 2012

Novel yellow and blue emissive dyes have been synthesized using 2,5-diamino-3,6-dicyanopyrazine and various alkoxysilanes and they are covalently bridged to cycloaliphatic epoxy functional oligosiloxane via non-hydrolytic sol–gel reaction. Dye-bridged hybrid materials (DBH) are fabricated by ...

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Single Dye Molecule Behavior in Fluorescent Core–Shell Silica Nanoparticles

10-Jan-2012 | Boiko Cohen; Cristina Martin; Srikant K. Iyer; Ulrich Wiesner; Abderrazzak Douhal, Chemistry of Materials, 2012

Understanding the parameters that control the intermolecular interactions of chromophores encapsulated within nanoparticles is of fundamental importance to various fields of nanoscience. Employing single-molecule time and spectral domains, we studied a red-absorbing hemicyanine analogue (DY-630) ...

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Cost-effective large-scale synthesis of ZnO photocatalyst with excellent performance for dye photodegradation

10-Jan-2012 | Chungui Tian; Qi Zhang; Aiping Wu; Meijia Jiang; Zhenglan Liang; Baojiang Jiang; Honggang Fu, Chemical Communication, 2012

Zinc oxide with excellent photocatalytic performance for the photodegradation of dyes (superior to Degussa P25 TiO2) could be easily prepared in large quantity by direct calcination of zinc acetate (Zn(Ac)2·2H2O).

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Comparison of a new immobilized Fe3+ catalyst with homogeneous Fe3+–H2O2 system for degradation of 2,4‐dinitrophenol

09-Jan-2012 | Ghosh, Prabir; Kumar, Chandra; Samanta, Amar Nath; Ray, Subhabrata, Journal of Chemical Technology & Biotechnology, 2012

Abstract BACKGROUND: Heterogeneous Fenton catalysts have been used to treat various organic pollutants in an aqueous environment. The present study has investigated the degradation of 2,4‐dinitrophenol (2,4‐DNP), a priority pollutant generated by such industries as pharmaceuticals, pesticides, ...

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Comparison of a new immobilized Fe3+ catalyst with homogeneous Fe3+–H2O2 system for degradation of 2,4‐dinitrophenol

09-Jan-2012 | Ghosh, Prabir; Kumar, Chandra; Samanta, Amar Nath; Ray, Subhabrata, Journal of Chemical Technology & Biotechnology, 2012

Abstract BACKGROUND: Heterogeneous Fenton catalysts have been used to treat various organic pollutants in an aqueous environment. The present study has investigated the degradation of 2,4‐dinitrophenol (2,4‐DNP), a priority pollutant generated by such industries as pharmaceuticals, pesticides, ...

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IJMS, Vol. 13, Pages 596-611: Surface Photochemistry: 3,3'-Dialkylthia and Selenocarbocyanine Dyes Adsorbed onto Microcrystalline Cellulose

09-Jan-2012 | Vieira Ferreira, Luís F. ; Ferreira, Diana P. ; Duarte, Paulo ; Oliveira, A. S. ; Torres, E. ; Ferreira Machado, I. ..., International Journal of Molecular Sciences, 2012

In this work, thia and selenocarbocyanines with n-alkyl chains of different length, namely with methyl, ethyl, propyl, hexyl and decyl substituents, were studied in homogeneous and heterogeneous media for comparison purposes. For both carbocyanine dyes adsorbed onto microcrystalline cellulose, a ...

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Quantitative full-colour transmitted light microscopy and dyes for concentration mapping and measurement of diffusion coefficients in microfluidic architectures

09-Jan-2012 | Martinus H. V. Werts; Vincent Raimbault; Rozenn Texier-Picard; Rémi Poizat; Olivier Français; Laurent Griscom; Julie ..., Lab on a Chip, 2012

A simple and versatile methodology has been developed for the simultaneous measurement of multiple concentration profiles of colourants in transparent microfluidic systems, using a conventional transmitted light microscope, a digital colour (RGB) camera and numerical image processing combined ...

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Thiophene-substituted aza-bodipy as a strategic synthon for the design of near-infrared dyes

09-Jan-2012 | Quentin Bellier; Fabrice Dalier; Erwann Jeanneau; Olivier Maury; Chantal Andraud, New Journal of Chemistry, 2012

Original aza-bodipy dyes functionalised by thiophene moieties in 3,5 or 1,7 positions were prepared and characterised by X-ray crystallography. The 3,5 substituted compound 3 exhibits promising photophysical properties red-shifted in the NIR spectral range. Furthermore, the presence of bromide ...

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