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Application of solvent-assisted dispersive solid phase extraction as a new, fast, simple and reliable preconcentration and trace detection of lead and cadmium ions in fruit and water samples

27-Apr-2015 | Author(s): Mohammad Behbahani , Parmoon Ghareh Hassanlou , Mostafa M. Amini , Fariborz Omidi , Ali Esrafili , M ..., Food Chemistry, 2015

Publication date: 15 November 2015 Source:Food Chemistry, Volume 187 Author(s): Mohammad Behbahani , Parmoon Ghareh Hassanlou , Mostafa M. Amini , Fariborz Omidi , Ali Esrafili , Mehdi Farzadkia , Akbar Bagheri In this research, a new sample treatment technique termed ...


Thin-Layer Fe2TiO5 on Hematite for Efficient Solar Water Oxidation

21-Apr-2015 | Jiujun Deng; Xiaoxin Lv; Jinyin Liu; Hui Zhang; Kaiqi Nie; Caihao Hong; Jiaou Wang; Xuhui Sun; Jun Zhong; Shuit-Tong Lee, ACS Nano, 2015

A thin Fe2TiO5 layer was produced on hematite either by evaporating a TiCl4 solution on FeOOH or by a simple HF-assisted Ti treatment of FeOOH, both followed by annealing. The prepared Fe2TiO5-hematite heterostructure showed a significant enhancement in photocurrent density compared to that of ...


Photophysics of Ru(II) Dyads Derived from Pyrenyl-Substitued Imidazo[4,5-f][1,10]phenanthroline Ligands

20-Apr-2015 | Christian Reichardt; Mitch Pinto; Maria Wächtler; Mat Stephenson; Stephan Kupfer; Tariq Sainuddin; Julien Guthmuller ..., Journal of Physical Chemistry A, 2015

The photophysics of a series of Ru(II) dyads based on the 2-(1-pyrenyl)-1H-imidazo[4,5-f][1,10]-phenanthroline ligand was investigated. The ability of these metal complexes to intercalate DNA and induce cell death upon photoactivation makes them attractive photosensitizers for a range of ...


4‐Cyano‐α‐methyl‐l‐phenylalanine as a Spectroscopic Marker for the Investigation of PeptaibioticMembrane Interactions

16-Apr-2015 | Marta De Zotti, Sara Bobone, Annalisa Bortolotti, Edoardo Longo, Barbara Biondi, Cristina Peggion, Fernando Formaggi ..., Chemistry & Biodiversity, 2015

Abstract Two analogs of the ten‐amino acid residue, membrane‐active lipopeptaibiotic trichogin GA IV, mono‐labeled with 4‐cyano‐α‐methyl‐L‐phenylalanine, a potentially useful fluorescence and IR absorption probe of the local microenvironment, were synthesized by the solid‐phase methodology and ...


Collisional relaxation of apocarotenals: identifying the S* state with vibrationally excited molecules in the ground electronic state S0*

15-Apr-2015 | Florian Ehlers; Mirko Scholz; Jens Schimpfhauser; Jürgen Bienert; Kawon Oum; Thomas Lenzer, Physical Chemistry Chemical Physics, 2015

In recent work, we demonstrated that the S* signal of β-carotene observed in transient pump–supercontinuum probe absorption experiments agrees well with the independently measured steady-state difference absorption spectrum of vibrationally hot ground state molecules S0* in solution, recorded at ...


Characterization of Red/Green Cyanobacteriochrome NpR6012g4 by Solution Nuclear Magnetic Resonance Spectroscopy: A Protonated Bilin Ring System in Both Photostates

14-Apr-2015 | Nathan C. Rockwell; Shelley S. Martin; Sunghyuk Lim; J. Clark Lagarias; James B. Ames, Biochemistry, 2015

Cyanobacteriochromes (CBCRs) are cyanobacterial photoreceptors distantly related to phytochromes. Both CBCRs and phytochromes use photoisomerization of a linear tetrapyrrole (bilin) chromophore to photoconvert between two states with distinct spectral and biochemical properties, the dark state ...


Ultraviolet–Visible photo-response of p-Cu2O/n-ZnO heterojunction prepared on flexible (PET) substrate

12-Apr-2015 | Author(s): Nezar G. Elfadill , M.R. Hashim , K.M.A. Saron , Khaled M. Chahrour , M.A. Qaeed , M. Bououdina, Materials Chemistry and Physics, 2015

Publication date: 15 April 2015 Source:Materials Chemistry and Physics, Volume 156 Author(s): Nezar G. Elfadill , M.R. Hashim , K.M.A. Saron , Khaled M. Chahrour , M.A. Qaeed , M. Bououdina The deposition of monocrystalline ZnO nanostructures (using different concentration of reaction ...


Accurate and Inexpensive Prediction of the Color Optical Properties of Anthocyanins in Solution

10-Apr-2015 | Xiaochuan Ge; Iurii Timrov; Simon Binnie; Alessandro Biancardi; Arrigo Calzolari; Stefano Baroni, Journal of Physical Chemistry A, 2015

The simulation of the color optical properties of molecular dyes in liquid solution requires the calculation of time evolution of the solute absorption spectra fluctuating in the solvent at finite temperature. Time-averaged spectra can be directly evaluated by combining ab initio Car–Parrinello ...


A hierarchical method to integrated solvent and process design of physical CO2 absorption using the SAFT‐γ mie approach

10-Apr-2015 | J. Burger, V. Papaioannou, S. Gopinath, G. Jackson, A. Galindo, C. S. Adjiman, AIChE Journal, 2015

Abstract Molecular‐level decisions are increasingly recognised as an integral part of process design. Finding the optimal process performance requires the integrated optimisation of process and solvent chemical structure, leading to a challenging mixed‐integer nonlinear programming (MINLP) ...


A dispenser–reactor apparatus applied for in situ XAS monitoring of Pt nanoparticle formation

07-Apr-2015 | Jocenir Boita, Marcus Vinicius Castegnaro, Maria do Carmo Martins Alves, Jonder Morais, Journal of Synchrotron Radiation, 2015

In situ time‐resolved X‐ray absorption spectroscopy (XAS) measurements collected at the Pt L3‐edge during the synthesis of Pt nanoparticles (NPs) in aqueous solution are reported. A specially designed dispenser–reactor apparatus allowed for monitoring changes in the XAS spectra from the earliest ...


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