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An FITC‐BODIPY FRET Couple: Application to Selective, Ratiometric Detection and Bioimaging of Cysteine

24-10-2014 | Dong Hee Ma, Dokyoung Kim, Takuya Akisawa, Kyung‐Ha Lee, Kyong‐Tai Kim, Kyo Han Ahn, Chemistry - An Asian Journal, 2014

Abstract A novel FRET couple of fluorescein is disclosed, and it was readily constructed by conjugating an amino‐BODIPY dye, a new FRET donor, with fluorescein isocyanate. Its potential was demonstrated by a fluorescence sensing system for cysteine, which was prepared by introducing acryloyl ...

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Magnetically Aligned Supramolecular Hydrogels

24-10-2014 | Matthew Wallace, Andre Zamith Cardoso, William J. Frith, Jonathan A. Iggo, Dave J. Adams, Chemistry - A European Journal, 2014

Abstract The magnetic‐field‐induced alignment of the fibrillar structures present in an aqueous solution of a dipeptide gelator, and the subsequent retention of this alignment upon transformation to a hydrogel upon the addition of CaCl2 or upon a reduction in solution pH is reported. Utilising ...

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Thymol treatment of bacteria prior to matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometric analysis aids in identifying certain bacteria at the subspecies level

24-10-2014 | Ricky D. Holland, Jon G. Wilkes, Willie M. Cooper, Pierre Alusta, Anna Williams, Bruce Pearce, Michael Beaudoin, Dan ..., Rapid Communications in Mass Spectrometry, 2014

RATIONALE The identification of bacteria based on mass spectra produced by matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI‐TOFMS) has become routine since its introduction in 1996. The major drawback is that bacterial patterns produced by MALDI are dependent ...

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Controlling Polymer Translocation and Ion Transport via Charge Correlations

24-10-2014 | Sahin Buyukdagli; T. Ala-Nissila, Langmuir, 2014

We develop a correlation-corrected transport theory in order to predict ionic and polymer transport properties of membrane nanopores under physical conditions where mean-field electrostatics breaks down. The experimentally observed low KCl conductivity of open α-hemolysin pores is quantitatively ...

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ChemInform Abstract: A New Nb28 Cluster Based on Tungstophosphate, [{Nb4O6 (OH)4}{Nb6P2W12O61 }4]36‐.

23-10-2014 | Dongdi Zhang, Zhijie Liang, Songqiang Xie, Pengtao Ma, Chao Zhang, Jingping Wang, Jingyang Niu, ChemInform, 2014

Abstract Pale‐yellow block‐shaped crystals of Na12 [H24{Nb4O6 (OH)4}{Nb6P2W12O61 }4]·24H2O are prepared by addition of NaCl to mixtures of Nb6O19 dissolved in aqueous H2O2 solution, HCl, and K12[H2P2W12O48] (80 °C, 14% yield).

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Fluorescent sensors based on quinoline‐containing styrylcyanine: determination of ferric ions, hydrogen peroxide, and glucose, pH‐sensitive properties and bioimaging

23-10-2014 | Xiaodong Yang, Peiliang Zhao, Jinqing Qu, Ruiyuan Liu, Luminescence, 2014

ABSTRACT A novel styrylcyanine‐based fluorescent probe 1 was designed and synthesized via facile methods. Ferric ions quenched the fluorescence of probe 1, whereas the addition of ferrous ions led to only small changes in the fluorescence signal. When hydrogen peroxide was introduced into the ...

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Experimental Measurement and Thermodynamic Modeling of Hydrate Dissociation Conditions for the Argon + TBAB + Water System

23-10-2014 | Saeedeh Babaee; Hamed Hashemi; Amir H. Mohammadi; Paramespri Naidoo; Deresh Ramjugernath, Journal of Chemical & Engineering Data, 2014

Gas hydrate (clathrate hydrate) dissociation data at low to moderate pressures are necessary for practical applications, e.g., for gas separation. However, it is often known or recognized that the separation conditions encountered exist at high pressures and low temperatures. One solution to this ...

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Protonation of a Biologically Relevant CuII μ‐Thiolate Complex: Ligand Dissociation or Formation of a Protonated CuI Disulfide Species?

22-10-2014 | Erica C. M. Ording‐Wenker, Martijn van der Plas, Maxime A. Siegler, Célia Fonseca Guerra, Elisabeth Bouwman, Chemistry - A European Journal, 2014

Abstract The proton‐induced electron‐transfer reaction of a CuII μ‐thiolate complex to a CuI‐containing species has been investigated, both experimentally and computationally. The CuII μ‐thiolate complex [CuII2(LMeS)2]2+ is isolated with the new pyridyl‐containing ligand LMeSSLMe, which can ...

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Hemodialysis membrane surface chemistry as a barrier to lipopolysaccharide transfer

21-10-2014 | Ben Madsen, David W. Britt, Chih‐Hu Ho, Michael Henrie, Cheryl Ford, Eric Stroup, Brent Maltby, Doug Olmstead, Mario ..., Journal of Applied Polymer Science, 2014

ABSTRACT During hemodialysis bacterial lipopolysaccharide (LPS) in contaminated dialysate solution may translocate across the hollow fiber membrane (HFM) to a patient's blood, resulting in fever and possible systemic shock. This study investigates LPS transfer across, and adsorption within, ...

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A Twisting Electronic Nanoswitch Made of DNA

21-10-2014 | Yu Chuan Huang, Dipankar Sen, Angewandte Chemie International Edition, 2014

Abstract Single‐stranded DNAs and RNAs that are rich in the nucleobase guanine form four‐stranded G‐quadruplexes, which are held together by hydrogen‐bonded guanine quartets. In aqueous solution, both DNA duplexes and G‐quadruplexes are modest conductors of electrical charge. A tight, ...

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