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Quantitative Analysis of Trace Palladium Contamination in Solution using Electrochemical X-Ray Fluorescence (EC-XRF)

27-Apr-2016 | Zoe J Ayres; Mark Edward Newton; Julie V Macpherson, Analyst, 2016

The application of electrochemical X-ray fluorescence (EC-XRF), for the detection of palladium (Pd) contamination in a range of solutions containing electrochemically active compounds, present in excess and relevant to the pharmaceutical and food industries, is reported. In EC-XRF, EC is used to ...

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Gamma-radiolytic preparation of multi-component oxides

24-Apr-2016 | Author(s): Lenka Procházková, Jan Bárta, Václav Čuba, Christian Ekberg, Sabrina Tietze, Ivo Jakubec, Radiation Physics and Chemistry, 2016

Publication date: July 2016 Source:Radiation Physics and Chemistry, Volume 124 Author(s): Lenka Procházková, Jan Bárta, Václav Čuba, Christian Ekberg, Sabrina Tietze, Ivo Jakubec The preparation of solid precursors to Zn1−x Cd x O and (Lu,Y)3Al5O12:Ce induced by 60Co gamma-ray ...

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Dissymmetric Bis(dipyrrinato)zinc(II) Complexes: Rich Variety and Bright Red to Near-Infrared Luminescence with a Large Pseudo-Stokes Shift

19-Apr-2016 | Ryota Sakamoto; Toshiki Iwashima; Julius F. Kögel; Shinpei Kusaka; Mizuho Tsuchiya; Yasutaka Kitagawa; Hiroshi Nishihara, Journal of the American Chemical Society, 2016

Bis(dipyrrinato)metal(II) and tris(dipyrrinato)metal(III) complexes have been regarded as much less useful luminophores than their boron difluoride counterparts (4,4-difluoro-4-bora-3a,4a-diaza-s-indacenes, BODIPYs), especially in polar solvent. We proposed previously that dissymmetry in such ...

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The role of segregation in the polarized emission from polyfluorene embedded in a liquid crystal

18-Apr-2016 | Lavinia Ghirardini, Tersilla Virgili, Serena Bolis, Jeroen Beeckman, Pascal Kockaert, Marco Finazzi, Michele Celebrano, Journal of Polymer Science Part B: Polymer Physics, 2016

ABSTRACT Polyfluorene (PFO) embedded in a nematic liquid crystal (LC) matrix is investigated. For low PFO weight contents, a homogeneous dispersion is obtained which displays a strong fluorescence anisotropy along the LC director, indicating a significant alignment of the polymeric chains ...

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A N‐(2‐hydroxyethyl)piperazine dangled 2,5‐diphenyl‐1,3,4‐oxadiazole‐based fluorescent sensor for selective relay recognition of Cu2+ and sulfide in water

18-Apr-2016 | Lijun Tang, Zhuxuan Zheng, Yanjiang Bian, Luminescence, 2016

Abstract A new 2,5‐diphenyl‐1,3,4‐oxadiazole‐based derivative (L) was synthesized and applied as a highly selective and sensitive fluorescent sensor for relay recognition of Cu2+ and S2− in water (Tris–HCl 10 mM, pH = 7.0) solution. L exhibits an excellent selectivity to Cu2+ over other ...

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Origin of the Red-Shifted Optical Spectra Recorded for Aza-BODIPY Dyes

18-Apr-2016 | Joshua K. G. Karlsson; Anthony Harriman, Journal of Physical Chemistry A, 2016

The optical properties are compared for two boron dipyrromethene (BODIPY) dyes that differ by virtue of the substituent at the meso-site, namely, aza-N versus C-methine atoms. Both compounds are equipped with aryl rings at the 3- and 5-positions of the dipyrrin backbone, which help to extend the ...

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STAND: Surface Tension for Aggregation Number Determination

15-Apr-2016 | Pablo F. Garrido; Pilar Brocos; Alfredo Amigo; Luis García-Río; Jesús Gracia-Fadrique; Ángel Piñeiro, Langmuir, 2016

Taking advantage of the extremely high dependence of surface tension on the concentration of amphiphilic molecules in aqueous solution, a new model based on the double equilibrium between free and aggregated molecules in the liquid phase and between free molecules in the liquid phase and those ...

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Temperature Response of Rhodamine B-Doped Latex Particles. From Solution to Single Particles

12-Apr-2016 | Antonin Soleilhac; Marion Girod; Philippe Dugourd; Béatrice Burdin; Julien Parvole; Pierre-Yves Dugas; François Baya ..., Langmuir, 2016

Nanoparticle-based temperature imaging is an emerging field of advanced applications. Herein, the sensitivity of the fluorescence of rhodamine B-doped latex nanoparticles toward temperature is described. Submicrometer size latex particles were prepared by a surfactant-free emulsion polymerization ...

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Spectroscopic insights on energy transfer phenomenon from phthalocyanine to gold nanoparticle and role of phthalocyanine-gold nanoparticle conjugate over supramolecular interaction between fullerene and phthalocyanine in solution

09-Apr-2016 | Author(s): Anamika Ray, Sumanta Bhattacharya, Chemical Physics Letters, 2016

Publication date: May 2016 Source:Chemical Physics Letters, Volume 651 Author(s): Anamika Ray, Sumanta Bhattacharya This letter envisages the photophysical insights on phthalocyanine (Pc)-gold nanoparticle (AuNp) conjugate in solution. Both steady state and time-resolved fluorescence ...

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An oxalamidoquinoline-based fluorescent sensor for selective detection of Zn2+ in solution and living cells and its logic gate behavior

08-Apr-2016 | Author(s): Xiujuan Tian, Xiangfeng Guo, Fashuo Yu, Lihua Jia, Sensors and Actuators B: Chemical, 2016

Publication date: September 2016 Source:Sensors and Actuators B: Chemical, Volume 232 Author(s): Xiujuan Tian, Xiangfeng Guo, Fashuo Yu, Lihua Jia A novel fluorescent sensor for Zn2+ based on 8-oxalamidoquinoline (OAQ) was designed and synthesized. OAQ behaves high selectivity to ...

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