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2,248 Newest Publications about the topic dyes

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Relationship Between I Diffusion in Titania Nanopores Modified with Dyes and Open Circuit Voltage of Dye-Sensitized Solar Cell

27-04-2011 | Azwar Hayat, Shyam S. Pandey, Yuhei Ogomi, and Shuzi Hayase, Fuel Cells and Energy Conversion, 2011

Relative diffusion rates (Rrel) of I3 - align=middle/ species in titania nanopores modified with various dye molecules were measured. Introduction of polar atoms such as O or F decreased Rrel and open circuit voltage (Voc) of dye-sensitized solar cells (DSC). The results were explained by the ...

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Selective Chromogenic Detection of Thiol-Containing Biomolecules Using Carbonaceous Nanospheres Loaded with Silver Nanoparticles as Carrier

26-04-2011 | Bo Hu; Yang Zhao; Hai-Zhou Zhu; Shu-Hong Yu, ACS Nano, 2011

Thiol-containing biomolecules show strong affinity with noble metal nanostructures and could not only stably protect them but also control the self-assembly process of these special nanostructures. A highly selective and sensitive chromogenic detection method has been designed for the low and ...

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Dithienothiophene (DTT)-Based Dyes for Dye-Sensitized Solar Cells: Synthesis of 2,6-Dibromo-DTT

26-04-2011 | Tae-Hyuk Kwon; Vanessa Armel; Andrew Nattestad; Douglas R. MacFarlane; Udo Bach; Samuel J. Lind; Keith C. Gordon; We ..., The Journal of Organic Chemistry, 2011

The Journal of Organic Chemistry DOI: 10.1021/jo2001484

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Luminescent Silica Nanoparticles: Extending the Frontiers of Brightness

26-04-2011 | Bonacchi, Sara; Genovese, Damiano; Juris, Riccardo; Montalti, Marco; Prodi, Luca; Rampazzo, Enrico; Zaccheroni, Nelsi, Angewandte Chemie International Edition, 2011

Abstract Silica nanoparticles are versatile platforms with many intrinsic features, such as low toxicity. Proper design and derivatization yields particularly stable colloids, even in physiological conditions, and provides them with multiple functions. A suitable choice of dyes and synthetic ...

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Preparation of donor–acceptor type organic dyes bearing various electron-withdrawing groups for dye-sensitized solar cell application

26-04-2011 | Youhei Numata; Islam Ashraful; Yasuhiro Shirai; Liyuan Han, Chemical Communication, 2011

Novel donor–π-spacer–acceptor type organic dyes bearing various electron-withdrawing groups on their acceptor part were synthesized by Knoevenagel condensation with acetic acid silyl ester derivatives. Dye-sensitized solar cells with the new dyes present solar light-to-electricity conversion ...

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3,5-Diformylboron Dipyrromethenes as Fluorescent pH Sensors

21-04-2011 | Sheri Madhu; Malakalapalli Rajeswara Rao; Mushtaque S. Shaikh; Mangalampalli Ravikanth, Inorganic Chemistry, 2011

A series of boron dipyrromethene (BODIPY) dyes containing two aldehyde functional groups at the 3 and 5 positions have been synthesized in low-to-decent yields in two steps. In the first step, the meso-aryl dipyrromethanes were treated with POCl3 in N,N-dimethylformamide to afford ...

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Synthesis and swelling characteristics of responsive carboxybetaine gel

20-04-2011 | Nazia Tarannum; Meenakshi Singh, Journal of Applied Polymer Science, 2011

Abstract A polyimminium gel, Dimedone‐[N, N′ melaminium] butyrocarboxylate copolymer, comprising of zwitterionic carboxybetaine repeat units was synthesized via a catalyst free facile polycondensation approach. The polymer was studied for its photoluminescence, thermal, and swelling behavior. ...

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Dextran Coated Ultrafine Superparamagnetic Iron Oxide Nanoparticles: Compatibility with Common Fluorometric and Colorimetric Dyes

20-04-2011 | Sioned M. Griffiths; Neenu Singh; Gareth J. S. Jenkins; Paul M. Williams; Alvin W. Orbaek; Andrew R. Barron; Chris J ..., Analytical Chemistry, 2011

Due to the unique physicochemical properties of nanomaterials (NM) and their unknown reactivity, the possibility of NM altering the optical properties of fluorometric/colorimetric probes that are used to measure their cyto- and genotoxicity may lead to inaccurate readings. This could have ...

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Development and validation of rapid disequilibrium enzyme-linked immunosorbent assays for the detection of Methyl Yellow and Rhodamine B dyes in foods

20-04-2011 | Michalina Oplatowska; Christopher T. Elliott, Analyst, 2011

Sensitive and specific enzyme-linked immunosorbent assays (ELISAs) were developed for the detection of two illegal synthetic dyes: Methyl Yellow (MY) and Rhodamine B (RB) in food. Polyclonal antibodies were raised against synthesised immunogens and employed in unique direct disequilibrium ELISAs. ...

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Raman imaging and photodegradation study of phthalocyanine containing microcapsules and coated particles

19-04-2011 | Bratashov, Daniil N.; Masic, Admir; Yashchenok, Alexey M.; Bedard, Matthieu F.; Inozemtseva, Olga A.; Gorin, Dmitry ..., Journal of Raman Spectroscopy, 2011

Abstract We present the results of using Raman molecular imaging and atomic force microscopy (AFM) investigation of the composition, stability, and photodegradation of polyelectrolyte multilayer microcapsules and coated microparticles containing copper–phthalocyanine and iron–phthalocyanine. ...

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