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Solution scattering studies of the hierarchical assembly of porphyrin trimers based on benzene triscarboxamide

28-10-2014 | Richard van Hameren; Arend van Buul; Dirk Visser; Richard K Heenan; Stephen M King; Alan Rowan; Roeland J.M. Nolte; ..., Soft Matter, 2014

The self-assembly of achiral and chiral porphyrin trimers based on benzene triscarboxamide in solution is studied with the help of NMR, FT-IR, UV-vis, and CD spectroscopy. These studies revealed that in apolar solvents the porphyrin trimers self-assembled in columnar stacks via a combination of ...


Switchable Amplification of Vibrational Circular Dichroism as a Probe of Local Chiral Structure

24-10-2014 | Sérgio R. Domingos, Hans J. Sanders, František Hartl, Wybren J. Buma, Sander Woutersen, Angewandte Chemie International Edition, 2014

Vibration circular dichroism (VCD) spectroscopy is used to determine the absolute configuration and conformation of chiral molecules in solution but low signal intensities and spectral congestion often prohibit the investigation of local structure. In their Communication (DOI: ...


Transfecting pDNA to E. coli DH5α using bovine serum albumin nanoparticles as a delivery vehicle

24-10-2014 | Jitendra Wagh, Kuldeep J. Patel, Parth Soni, Krutika Desai, Pratik Upadhyay, Hemant P. Soni, Luminescence, 2014

ABSTRACT We describe the formulation of bovine serum albumin nanoparticles (BSA‐NPs) by the coacervation method using surfactants. Plasmids (pUC18, pUC18egfp and pBBR1MCS‐2) isolated from E. coli were incorporated into the BSA matrix by incubating in albumin solution prior to formulation of ...


Time- and Concentration-Dependent Reactivity of Cys, Hcy, and GSH on the Diels–Alder-Grafted 1,3,5-Tris Conjugate of Calix[6]arene To Bring Selectivity for Cys: Spectroscopy, Microscopy, and Its Reactivity in Cells

22-10-2014 | V. V. Sreenivasu Mummidivarapu; Deepthi S. Yarramala; Karuna Kumar Kondaveeti; Chebrolu P. Rao, The Journal of Organic Chemistry, 2014

Herein we report the synthesis and characterization of 7-oxanorbornadiene (OND)-appended 1,3,5-tris conjugate of calix[6]arene (L2). L2 has been shown to exhibit selective reactivity toward cysteine (Cys) over homocysteine (Hcy) and glutathione (GSH) under stoichiometric conditions. The ...


Synthesis of Conducting Polymer/Zinc Sulfide Nanocomposite Films and Investigation of Their Electrochemical and Morphological Properties

21-10-2014 | ERSEN TURAC, ERTUGRUL SAHMETLIOGLU, ERSEN GOKTURK, Advances in Polymer Technology, 2014

ABSTRACT Polypyrrole–zinc sulfide (PPy‐ZnS) and poly(3,4‐ethylenedioxythiophene)–zinc sulfide (PEDOT–ZnS) composite films were synthesized and characterized. Their electrochemical behaviors were investigated. The synthesis of PPy‐ZnS and PEDOT‐ZnS composite films was carried out by ...


Population-Controlled Impulsive Vibrational Spectroscopy: Background- and Baseline-Free Raman Spectroscopy of Excited Electronic States

21-10-2014 | Torsten Wende; Matz Liebel; Christoph Schnedermann; Robert J. Pethick; Philipp Kukura, Journal of Physical Chemistry A, 2014

We have developed the technique of population-controlled impulsive vibrational spectroscopy (PC-IVS) aimed at providing high-quality, background-free Raman spectra of excited electronic states and their dynamics. Our approach consists of a modified transient absorption experiment using an ...


The reactivity of N,C,N-intramolecularly coordinated antimony(III) and bismuth(III) oxides with the sterically encumbered organoboronic acid 2,6-i-Pr2C6H3B(OH)2

17-10-2014 | Author(s): Monika Kořenková , Milan Erben , Roman Jambor , Aleš Růžička , Libor Dostál, Journal of Organometallic Chemistry, 2014

Publication date: 1 December 2014 Source:Journal of Organometallic Chemistry, Volumes 772–773 Author(s): Monika Kořenková , Milan Erben , Roman Jambor , Aleš Růžička , Libor Dostál The reactivity of N,C,N-intramolecularly coordinated antimony(III) and bismuth(III) oxides (LMO)2 [where ...


Characterization and quantification of microstructures of a fluorinated terpolymer by both homonuclear and heteronuclear two‐dimensional NMR spectroscopy

17-10-2014 | Salim Ok, Magnetic Resonance in Chemistry, 2014

Fluoropolymers are usually insoluble in organic solvents. Insolubility of fluoropolymers limits basic characterization such as microstructural investigations. In the family of fluoropolymers, terpolymer of tetrafluorethylene (TFE), hexafluoropropylene (HFP), and vinylidene fluoride (VDF), named ...


Real-Time UV-Visible Spectroscopy Analysis of Purple Membrane-Polyacrylamide Film Formation Taking into Account Fano Line Shapes and Scattering

17-10-2014 | María Gomariz et al., PLoS ONE, 2014

by María Gomariz, Salvador Blaya, Pablo Acebal, Luis Carretero We theoretically and experimentally analyze the formation of thick Purple Membrane (PM) polyacrylamide (PA) films by means of optical spectroscopy by considering the absorption of bacteriorhodopsin and scattering. We have applied ...


Speciation and structure of tin(II) in hyper-alkaline aqueous solution

15-10-2014 | Éva Gabriella Bajnóczi; Eszter Czeglédi; Ernő Kuzmann; Zoltan Homonnay; Szabolcs Bálint; Gyorgy Dombi; Peter Forgo; ..., Dalton Transactions, 2014

The identity of the predominating tin(II)-hydroxide complex formed in hyper-alkaline aqueous solution (0.2  CNaOH  12 mol⋅dm-3) has been determined by potentiomet¬ric titrations, Raman, Mössbauer and XANES spectroscopy, supplemented by quantum chemical calculations. Thermodyna¬mic studies using ...


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