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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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Novel ruthenium(II) cyclopentadienyl thiosemicarbazone compounds with antiproliferative activity on pathogenic trypanosomatid parasites

05-Jul-2015 | Author(s): Mariana Fernández , Esteban Rodríguez Arce , Cynthia Sarniguet , Tânia S. Morais , Ana Isabel Tomaz ..., Journal of Inorganic Biochemistry, 2015

Publication date: Available online 30 June 2015 Source:Journal of Inorganic Biochemistry Author(s): Mariana Fernández , Esteban Rodríguez Arce , Cynthia Sarniguet , Tânia S. Morais , Ana Isabel Tomaz , Claudio Olea Azar , Roberto Figueroa , J. Diego Maya , Andrea Medeiros , ...

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Strain Promoted Click Chemistry of 2- or 8-Azidopurine and 5-Azidopyrimidine Nucleosides and 8-Azidoadenosine Triphosphate with Cyclooctynes. Application to Living Cell Fluorescent Imaging

02-Jul-2015 | Jessica Zayas; Marie Annoual; Jayanta Kumar Das; Quentin Felty; Walter G. Gonzalez; Jaroslava Miksovska; Nima Sharif ..., Bioconjugate Chemistry, 2015

Strain-promoted click chemistry of nucleosides and nucleotides with an azido group directly attached to the purine and pyrimidine rings with various cyclooctynes in aqueous solution at ambient temperature resulted in efficient formation (3 min to 3 h) of fluorescent, light-up, triazole products. ...

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Lysosome targeting fluorescence probe for imaging intracellular thiols

02-Jul-2015 | Dnyaneshwar Kand; Tanmoy Saha; Mayurika Lahiri; Pinaki Talukdar, Organic & Biomolecular Chemistry, 2015

A BODIPY-based fluorescence turn-on probe, exhibiting high selectivity and sensitivity towards intracellular thiols with excellent lysosomal localization is reported. Probe displayed fast response towards biothiols in aqueous solution. Localization of the probe in lysosome was demonstrated by ...

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Fluorescence Enhancement/Quenching Based on Metal Orbital Control: Computational Studies of a 6-Thienyllumazine-Based Mercury Sensor

01-Jul-2015 | Akef T. Afaneh; Georg Schreckenbach, Journal of Physical Chemistry A, 2015

To understand the sensing behaviors of molecular fluorescent probes, lumazine (Lm) and 6-thienyllumazine (TLm) and their complexation with metal(II) ions ([(L)nM(H2O)m]2+, M = Cd2+ and Hg2+) were examined by scalar relativistic density functional theory (DFT). A red shifting from L to ...

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A Water‐soluble Conjugated Polymer for Thiol Detection Based on "Turn‐off" Effect

29-Jun-2015 | Gaoshan Zeng, Jie Li, Hao Liang, Yan Yuan, Xiang Li, Chao Yin, Zhen Yang, Quli Fan, Xiaomei Lu, Wei Huang, Chinese Journal of Chemistry, 2015

Abstract We investigated a novel water‐soluble conjugated polymer (WSCP) for thiol detection based on "turn‐off" effect. This WSCP was modified with poly(ethylene glycol) (PEG) by disulfide linkages to achieve good solubility in aqueous solution (34 mg/mL) and high quantum yield (0.47). The ...

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Rapid Filament Supramolecular Chirality Reversal of HET-s (218–289) Prion Fibrils Driven by pH Elevation

26-Jun-2015 | Maruda Shanmugasundaram; Dmitry Kurouski; William Wan; Gerald Stubbs; Rina K. Dukor; Laurence A. Nafie; Igor K. Lednev, Journal of Physical Chemistry B, 2015

Amyloid fibril polymorphism is not well understood despite its potential importance for biological activity and associated toxicity. Controlling the polymorphism of mature fibrils including their morphology and supramolecular chirality by postfibrillation changes in the local environment is the ...

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Solvent Molding of Organic Morphologies Made of Supramolecular Chiral Polymers

22-Jun-2015 | Luka Đorđević; Tomas Marangoni; Tanja Miletić; Jenifer Rubio-Magnieto; John Mohanraj; Heinz Amenitsch; Dario Pasini; ..., Journal of the American Chemical Society, 2015

The self-assembly and self-organization behavior of uracil-conjugated enantiopure (R)- or (S)-1,1′-binaphthyl-2,2′-diol (BINOL) and a hydrophobic oligo(p-phenylene ethynylene) (OPE) chromophore exposing 2,6-di(acetylamino)pyridine termini are reported. Systematic spectroscopic (UV–vis, CD, ...

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Real-Time, Quantitative Lighting-up Detection of Telomerase in Urines of Bladder Cancer Patients by AIEgens

22-Jun-2015 | Xiaoding Lou; Yuan Zhuang; Xiaolei Zuo; Yongmei Jia; Yuning Hong; Xuehong Min; Zhenyu Zhang; Xuemei Xu; Nannan Liu; ..., Analytical Chemistry, 2015

As a biomarker for early cancer diagnosis, telomerase are one of the promising targets for cancer therapeutics. Inspired by the fluorescent emission principle of aggregation-induced emission fluorogens, we creatively designed an AIE-based turn-on method to detect telomerase activity from cell ...

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Fluorescent Dendritic Organogels Based on 2‐(2′‐Hydroxyphenyl)benzoxazole: Emission Enhancement and Multiple Stimuli‐Responsive Properties

19-Jun-2015 | Hui Chen, Yu Feng, Guo‐Jun Deng, Zhi‐Xiong Liu, Yan‐Mei He, Qing‐Hua Fan, Chemistry - A European Journal, 2015

Abstract A new highly efficient and versatile poly(benzyl ether) dendritic organogelator HPB‐G1 with 2‐(2′‐hydroxyphenyl)benzoxazole (HPB) at the focal point has been designed and synthesized. HPB‐G1 can form stable organogels toward various apolar and polar organic solvents. Further studies ...

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