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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 ...


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 ...


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 ...


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 ...


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 ...


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 ...


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 ...


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 ...


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 ...


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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