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4,109 Newest Publications about the topic dyes

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Duplex‐Selective Ruthenium‐Based DNA Intercalators

26-Jun-2015 | Chad M. Shade, Robert D. Kennedy, Jessica L. Rouge, Mari S. Rosen, Mary X. Wang, Soyoung E. Seo, Daniel J. Clingerma ..., Chemistry - A European Journal, 2015

Abstract We report the design and synthesis of small molecules that exhibit enhanced luminescence in the presence of duplex rather than single‐stranded DNA. The local environment presented by a well‐known [Ru(dipyrido[3,2‐a:2′,3′‐c]phenazine)L2]2+‐based DNA intercalator was modified by ...

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FDPHOTOC15: Photoelectrochemical Properties of Porphyrin Dyes with a Molecular Dipole in the Linker

26-Jun-2015 | Ken T. Ngo; Jonathan Rochford; Hao Fan; Alberto Batarseh; Keyur Chitre; Sylvie Rangan; Robert A. Bartynski; Elena Ga ..., Faraday Discussions, 2015

The electronic properties of three porphyrin-bridge-anchor photosensitizers are reported with (1a,e and 3a,e) or without (2a,e) an intramolecular dipole in the bridge. The presence and orientation of the bridge dipole is hypothesized to influence photovoltaic properties due to variations in the ...

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Transition-Metal-Free Visible-Light Photoredox Catalysis at Room-Temperature for Decarboxylative Fluorination of Aliphatic Carboxylic Acids by Organic Dyes

26-Jun-2015 | Xinxin Wu; Chunna Meng; Xiaoqian Yuan; Xiaotong Jia; Xu Hong Qian; Jinxing Ye, Chemical Communication, 2015

We report herein an efficient, general and green method for decarboxylative fluorination of aliphatic carboxylic acids. By using a transition-metal-free, organocatalytic photoredox system, the reaction of various aliphatic carboxylic acids with Selectfluor reagent afforded the corresponding alkyl ...

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Asymmetric Donor–π‐Acceptor‐Type Benzo‐Fused Aza‐BODIPYs: Facile Synthesis and Colorimetric Properties

25-Jun-2015 | Wei Zheng, Bei‐Bei Wang, Cheng‐Hui Li, Jing‐Xuan Zhang, Cheng‐Zhang Wan, Jia‐Hao Huang, Jian Liu, Zhen Shen, Xiao‐Ze ..., Angewandte Chemie International Edition, 2015

Abstract Novel aza‐diisoindolylmethene and their BF2‐chelating complexes (benzo‐fused aza‐BODIPYs) were synthesized on a large scale and in a facile manner from phthalonitrile in tBuOK‐DMF solution. The unique asymmetric donor–π‐acceptor structure facilitates BN bond detachment in the ...

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Azadipyrromethene‐Based Near‐Infrared Dyes: Effect of Thienylethynyl Substitution at the Distal and Proximal Phenyl Groups

25-Jun-2015 | Cassie M. Daddario, Qi Han, Matthias Zeller, Geneviève Sauvé, European Journal of Inorganic Chemistry, 2015

Abstract Azadipyrromethene (ADP) ligands substituted with thienylethynyl substituents either at the distal phenyl groups H(CD1) or the proximal phenyl groups H(CD2) were synthesized and characterized. The thienyl groups have a hexyl group at the third position to improve solubility in organic ...

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A simple and compact fluorescence detection system for capillary electrophoresis and its application to food analysis

24-Jun-2015 | Haiyun Zhai, Kaisong Yuan, Xiao Yu, Zuanguang Chen, Zhenping Liu, Zihao Su, ELECTROPHORESIS, 2015

A novel fluorescence detection system for capillary electrophoresis (CE) was described and evaluated. Two miniature laser pointers were used as the excitation source. A Y‐style optical fiber was used to transmit the excitation light and a four‐branch optical fiber was used to collect the ...

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Dual drug release from CO2‐infused nanofibers via hydrophobic and hydrophilic interactions

24-Jun-2015 | Brett C. Geiger, Mark Tyler Nelson, Hrishikesh R. Munj, David L. Tomasko, John J. Lannutti, Journal of Applied Polymer Science, 2015

ABSTRACT This study investigated the effects of hydrophobic–hydrophilic interactions on dual drug release from CO2‐infused nanofibers scaffolds (PCL, PCL–gelatin, and PCL “core” PCL–gelatin “shell”) using BODIPY 493/503 and Rhodamine B fluorescent dyes as drug models. Favorable dye–scaffold ...

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Sodium Deoxycholate Hydrogels: Effects of Modifications on Gelation, Drug Release, and Nanotemplating

24-Jun-2015 | Kelsey E. McNeel; Susmita Das; Noureen Siraj; Ioan I. Negulescu; Isiah M. Warner, Journal of Physical Chemistry B, 2015

In the present study, sodium deoxycholate (NaDC) was used to produce gelation of tris(hydroxymethyl)amino-methane (TRIS) solutions above, below, and near the pKa of NaDC, respectively, which yielded a neutral gelator, a charged gelator, and a mixture of each. Impacts of ionic interactions on gel ...

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Labeling Cell Surface GPIs and GPI‐Anchored Proteins through Metabolic Engineering with Artificial Inositol Derivatives

23-Jun-2015 | Lili Lu, Jian Gao, Zhongwu Guo, Angewandte Chemie International Edition, 2015

Abstract Glycosylphosphatidylinositol (GPI) anchoring of proteins to the cell surface is important for various biological processes, but GPI‐anchored proteins are difficult to study. An effective strategy was developed for the metabolic engineering of cell‐surface GPIs and GPI‐anchored ...

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Removal of methylene blue and neutral red from aqueous solutions by surfactant‐modified magnetic nanoparticles as highly efficient adsorbent

22-Jun-2015 | Mohammad Bagher Gholivand, Yadollah Yamini, Manijeh Dayeni, Shahram Seidi, Environmental Progress, 2015

Sodium dodecyl sulfate‐coated magnetic nanoparticles were utilized as the inexpensive and effective adsorbents to remove neutral red and methylene blue (two cationic dyes) from aqueous solutions. Factors affecting adsorption, including the amounts of adsorbent and surfactant, pH, and contact ...

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