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Heavy Water: A Simple Solution to Increasing Brightness of Fluorescence Proteins in Super-resolution Imaging

29-Jul-2015 | Wei Qiang Ong; Yemima Rose Citron; Joerg Schnitzbauer; Daichi Kamiyama; Bo Huang, Chemical Communication, 2015

Photoactivatable fluorescent proteins (PA-FPs) are widely used in live single-molecule super-resolution imaging but emit substantially fewer photons than organic dyes do. Here, we show that in heavy water (D2O) instead of H2O, common PA-FPs emit 26 %–54 % more photons, effectively improving the ...

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A high selectivity fluorescent chemosensor for cyanide anion based on a chalcone derivative in the present of iron (III) ion, and its capacity for living cell imaging in mixed aqueous system

28-Jul-2015 | wen yang; zhongqin cheng; yunlong xu; Jie Shao; weiqun zhou; Juan Xie; Mengying Li, New Journal of Chemistry, 2015

A donor-acceptor chalcone based 4-dimethylamino 4-fluorochalcone (1) is found exhibiting a distinct green fluorescence and has a good stability in CH3CN/water (V/V=1:9) buffer solution (Tris-HCl, pH=7.4), and that the in situ formed 1-Fe3+ complex upon addition of Fe3+ serves as a highly ...

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Modulation of Excited State Proton Transfer Dynamics of a Lactim–Lactam Tautomeric System in Different Block Copolymer–Surfactant Aggregates

23-Jul-2015 | Debarati Ray; Animesh Pramanik; Nikhil Guchhait, Journal of Physical Chemistry B, 2015

The proton transfer (PT) process in 1-(2-hydroxy-5-chloro-phenyl)-3,5-dioxo-1H-imidazo-[3,4-b]isoindole (ADCL) has been studied in three different copolymer–surfactant supramolecular assemblies prepared in aqueous 1% P123 triblock copolymer micellar solution with varying concentrations of ...

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Synthesis of Dibenzo[f,h][1,2,4]triazolo[3,4-b]quinazolines via a Two-Step Route with Water as the Only By-Product

23-Jul-2015 | Pingping Xue; Zichao Du; Tao Wang; Zunting Zhang, Synthesis, 2015

SynthesisDOI: 10.1055/s-0034-1380455 Microwave-promoted cyclocondensation of isoflavones with 3-amino[1,2,4]triazole gave 6-phenyl-7-(2-hydroxyphenyl)-1,2,4triazolo[4,3-a]pyrimidines as intermediates. Subsequent photocyclization of these intermediates delivered ...

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Fluorescence sensing ADP over ATP and PPi in 100% aqueous solution

21-Jul-2015 | Feihu Huang; Gefei Hao; Fengxu Wu; Guoqiang Feng, Analyst, 2015

An anthracene-bridged dinuclear zinc(II)-dipicolylamine complex was found to show high selectivity for ADP with significant fluorescence enhancement over ATP, PPi and other common analytes in 100% aqueous solution. This complex can be used for fluorescent detection of ADP in living cells and for ...

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Dual‐emissive polydiphenylsilane nanocomposite: effect of N,N′‐bis(4‐hydroxysalicylidene)‐1,2‐phenylenediamine‐Zn complex

20-Jul-2015 | Liviu Sacarescu, Corneliu Cojocaru, Rodinel Ardeleanu, Maria Fortuna, Gabriela Sacarescu, Mihaela Simionescu, Polymers for Advanced Technologies, 2015

The fluorescence properties of polysilane can be strongly influenced by creating new excited states that involve electronic transitions and the relaxation to the ground state. This work presents the optical effects obtained by doping a specially designed polydiphenylsilane copolymer with Zn ...

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Benzo[c,d]indole‐Containing Aza‐BODIPY Dyes: Asymmetrization‐Induced Solid‐State Emission and Aggregation‐Induced Emission Enhancement as New Properties of a Well‐Known Chromophore

17-Jul-2015 | Soji Shimizu , Ai Murayama, Takuya Haruyama, Taku Iino, Shigeki Mori, Hiroyuki Furuta , Nagao Kobayashi , Chemistry - A European Journal, 2015

Abstract A series of symmetric and asymmetric benzo[c,d]indole‐containing aza boron dipyrromethene (aza‐BODIPY) compounds was synthesized by a titanium tetrachloride‐mediated Schiff‐base formation reaction of commercially available benzo[c,d]indole‐2(1H)‐one and heteroaromatic amines. These ...

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Design of Fe3O4@SiO2@Carbon Quantum Dot Based Nanostructure for Fluorescence Sensing, Magnetic Separation, and Live Cell Imaging of Fluoride Ion

13-Jul-2015 | Sasmita Mohapatra; Swagatika Sahu; Santoshi Nayak; Sudip K. Ghosh, Langmuir, 2015

A robust reusable fluoride sensor comprised of a receptor in charge of the chemical recognition and a fluorophore responsible for signal recognition has been designed. Highly fluorescent carbon quantum dot (CD) and magnetically separable nickel ethylenediaminetetraacetic acid (EDTA) complex ...

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The Inductive-Effect of Electron Withdrawing Trifluoromethyl for Thermally Activated Delayed Fluorescence: Tunable Emission from Tetra- to Penta-Carbazole in Solution Processed Blue OLEDs

08-Jul-2015 | Ling Mei; Jia Hu; Xudong Cao; Fangfang Wang; Chao Zheng; Youtian Tao; Xin-Wen Zhang; Wei Huang, Chemical Communication, 2015

Different to previous thermally activated delayed fluorescence (TADF) materials based on conjugated-effect of electron-withdrawing moieties, trifluoromethyl (CF3) is found to be a new acceptor building block owing to the electron-inductive-effect. Two blue emissive small molecular compounds ...

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A highly selective and sensitive single click novel fluorescent off-on sensor for copper and sulfide ion detection directly in aqueous solution using curcumin nanoparticles

07-Jul-2015 | Dhanaji Pandit Bhopate; Prasad Gajanan Mahajan; Kalaynrao M Garadkar; Govind B. Kolekar; Shivajirao Raghunath Patil, New Journal of Chemistry, 2015

Based on curcumin nanoparticles (CURNPs) in the aqueous system a fluorescent nano sensor was prepared by simple reprecipitation method and characterized. It can display off-type fluorescence probe with high selectivity toward Cu2+ among other metal ions in aqueous solution having an excellent ...

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