TPPS supported on core–shell PMMA nanoparticles: the development of continuous-flow membrane-mediated electrocoagulation as a photocatalyst processing method in aqueous media

2015 ◽  
Vol 17 (3) ◽  
pp. 1907-1917 ◽  
Author(s):  
Paolo Dambruoso ◽  
Marco Ballestri ◽  
Claudia Ferroni ◽  
Andrea Guerrini ◽  
Giovanna Sotgiu ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Pure Water ◽  
Aqueous Media ◽  
Processing Method ◽  
Core Shell

Photons and electrons cooperate for effective, clean sulfoxidations in pure water.

Continuous-Flow Syntheses of Alloy Nanoparticles

2021 ◽  
Author(s):  
Kohei Kusada ◽  
Hiroshi Kitagawa
Keyword(s):  
Solid Solution ◽  
Optical Properties ◽  
Continuous Flow ◽  
Core Shell ◽  
Alloy Nanoparticles ◽  
Wide Range

Alloy nanoparticles (NPs), including core-shell, segregated and solid-solution types, show a variety of attractive properties such as catalytic and optical properties and are used in a wide range of applications....

The one-pot synthesis of core/shell/shell CdTe/CdSe/ZnSe quantum dots in aqueous media for in vivo deep tissue imaging

2011 ◽  
Vol 21 (9) ◽  
pp. 2877 ◽  
Author(s):  
Shohei Taniguchi ◽  
Mark Green ◽  
Sarwat B. Rizvi ◽  
Alexander Seifalian
Keyword(s):  
Quantum Dots ◽  
Aqueous Media ◽  
Tissue Imaging ◽  
Core Shell ◽  
Deep Tissue ◽  
One Pot ◽  
One Pot Synthesis ◽  
Deep Tissue Imaging ◽  
The One

scholarly journals A Core–Shell Nanoparticle Approach to Photoreversible Fluorescence Modulation of a Hydrophobic Dye in Aqueous Media

2008 ◽  
Vol 14 (16) ◽  
pp. 4851-4860 ◽  
Author(s):  
Jian Chen ◽  
Fang Zeng ◽  
Shuizhu Wu ◽  
Qiming Chen ◽  
Zhen Tong
Keyword(s):  
Aqueous Media ◽  
Core Shell ◽  
Fluorescence Modulation

scholarly journals Micellization Behavior of Cetyltrimethylammonium bromide in Presence and Absence of Na2SO4 and MgSO4 in Aqueous media

BIBECHANA ◽  
2016 ◽  
Vol 14 ◽  
pp. 77-85 ◽  
Author(s):  
Chom Nath Adhikari ◽  
G S Shrivastav ◽  
Ajaya Bhattarai
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Cetyltrimethylammonium Bromide ◽  
Pure Water ◽  
Aqueous Media ◽  
Presence And Absence ◽  
Micellization Behavior

Viscosity and surface tension measurements of cetyltrimethylammonium bromide (CTAB) in presence and absence of Na2SO4 and MgSO4 in aqueous media are reported. The results showed an increase in viscosity with increase in concentration of cetyltrimethylammonium bromide in presence and absence of salts where as the decrease in surface tension with increase in concentration of cetyltrimethylammonium bromide in presence and absence of salts. The viscosity of CTAB was observed lowest in pure water and increases in presence of MgSO4 and then more increases in presence of Na2SO4 where as the surface tension of CTAB was observed highest in pure water and decreases in presence of Na2SO4 and then more decreases in presence of MgSO4.The critical micelle concentration (cmc) of CTAB decreases in presence of salts in both viscosity and surface tension measurements. The decreasing cmc of CTAB are found to be more in the presence of Na2SO4 in comparison with the presence of MgSO4 for both measurements. The graphs of viscosity versus log[C] and the surface tension versus log[C] are used in determining the critical micelle concentration (cmc).        BIBECHANA 14 (2017) 77-85

Continuous flow fast atom bombardment mass spectrometry of mononucleotides and their metal complexes

1989 ◽  
Vol 67 (5) ◽  
pp. 910-920 ◽  
Author(s):  
M. J. Bertrand ◽  
V. Benham ◽  
R. St-Louis ◽  
M. J. Evans
Keyword(s):  
Mass Spectrometry ◽  
Continuous Flow ◽  
Fast Atom Bombardment ◽  
Aqueous Media ◽  
Molecular Ions ◽  
Fragment Ions ◽  
Low Concentrations ◽  
Metal Adducts ◽  
Matrix Concentration

The mass spectra of mononucleotides and their metal adducts Na, K, Mg, Ca, Ni, Co, Cu, and Zn of guanosine 5′-monophosphate (5′-GMP) as well as H, Na, and Mg of adenosine 5′-monophosphate (5′-AMP) and H and Ni of inosine 5′-monophosphate (5′-IMP) have been obtained in low concentrations of matrix in water using continuous-flow fast atom bombardment. The results indicate that this technique is suitable for the analysis of these complexes in aqueous media and yields spectra that are highly characteristic of the compounds analyzed. Parent-molecular ions and structurally significant fragment ions are observed for all compounds studied and the different binding sites for the metal on the nucleotides can be isolated from the fragment ions. Experimental parameters influencing the quality of the spectra such as flow rate, matrix concentration, matrix nature, and analyte concentration have been studied and optimized. For the thirteen compounds studied, it appears that continuous-flow FAB is superior to conventional FAB and that good quality spectra can be obtained with as little as 0.5% of added matrix thus minimizing spectral interferences. Keywords: continuous flow FAB, FAB MS, mass spectrometry, nucleotides, metal-nucleotides.

scholarly journals Micellisation behavior on the dodecyltrimethylammonium bromide in the presence of Brij-35 in pure water by conductivity measurement

BIBECHANA ◽  
2017 ◽  
Vol 15 ◽  
pp. 85-89
Author(s):  
Neelam Shahi ◽  
Ajaya Bhattarai
Keyword(s):  
Free Energy ◽  
Sharp Increase ◽  
Pure Water ◽  
Specific Conductivity ◽  
Aqueous Media ◽  
Conductivity Measurement ◽  
Ammonium Bromide ◽  
Dodecyltrimethylammonium Bromide ◽  
Brij 35 ◽  
Versus Concentration

Conductivity measurement of dodecyltrimethylammonium bromide in the presence of Brij-35 in aqueous media at 289.15 K is performed. The result showed a sharp increase in conductivity with increase in the concentration of dodecyltrimethylammonium bromide in the presence of Brij-35. The graph of specific conductivity versus concentration is used in determining the critical micelle concentration (CMC). There is the decrease in CMC of  dodecyltrimethylammonium bromide in the presence of  Brij-35 in comparison with the CMC of  dodecyltrimethyl ammonium bromide [DTAB]. Gibbs free energy of micellisation has also been evaluated.   BIBECHANA 15 (2018) 85-89

scholarly journals Core–shell Au/CeO2 nanoparticles supported in UiO-66 beads exhibiting full CO conversion at 100 °C

2017 ◽  
Vol 5 (27) ◽  
pp. 13966-13970 ◽  
Author(s):  
A. Yazdi ◽  
A. Abo Markeb ◽  
L. Garzón-Tovar ◽  
J. Patarroyo ◽  
J. Moral-Vico ◽  
...  
Keyword(s):  
Spray Drying ◽  
Continuous Flow ◽  
Ceo2 Nanoparticles ◽  
Core Shell ◽  
Flow Method ◽  
Co Conversion ◽  
Continuous Flow Method

Hybrid core–shell Au/CeO2 nanoparticles (NPs) dispersed in UiO-66 shaped into microspherical beads are created using the spray-drying continuous-flow method.

Fluorescence of oligonucleotides adsorbed onto the thermoresponsive poly(isopropyl acrylamide) shell of polymer nanoparticles: Application to bioassays

2009 ◽  
Vol 81 (9) ◽  
pp. 1615-1634 ◽  
Author(s):  
José M. G. Martinho ◽  
Telmo J. V. Prazeres ◽  
Leila Moura ◽  
José P. S. Farinha
Keyword(s):  
Pure Water ◽  
Resonance Energy Transfer ◽  
High Mobility ◽  
Resonance Energy ◽  
Core Shell ◽  
Chain Mobility ◽  
Isopropyl Acrylamide ◽  
Hybridization Efficiency ◽  
Dense Shell ◽  
Covalently Linked

The fluorescence of a rhodamine X dye covalently linked to the 5' terminus of a 25-mers thymine oligodeoxynucleotide (dT25-ROX), adsorbed on the shell of thermoresponsive core-shell polymer particles, was used to probe the polarity, mobility, and distribution of the oligodeoxynucleotides (ODNs) in the shell. The particles have a glassy core of poly(methyl methacrylate) (PMMA) with a 67-nm radius, and a thermoresponsive shell of poly(N-isopropyl acrylamide) (PNIPAM) whose thickness changes from 42 nm at 11 ºC to 5 nm at 45 ºC. The variation in polarity of the shell with temperature was obtained both from the lifetimes and from the solvatochromic shifts of the dye and shows a sharp transition at the volume phase transition temperature (TVPT) of the PNIPAM shell. Förster resonance energy transfer (FRET) between dT25-ROX and a malachite green (MG)-labeled ODN (dT25-MG) was used to obtain the distribution of the ODNs in the thermoresponsive shell. Our results show that at 23 ºC (below TVPT) the ODNs are distributed inside the shell, sensing an environment similar to water. At this temperature, the PNIPAM shell is composed of hydrated chains with high mobility, as probed by the fluorescence anisotropy of dT25-ROX. By increasing the temperature above TVPT, the shell collapses and the chain mobility drastically slows down owing to the anchoring of the ODN to the dense shell of PNIPAM. Furthermore, FRET shows that the ODNs are absorbed on the 5-nm-thick collapsed shell but extend into the water. The polarity probed by the ROX averages the dyes distributed in the interior of the particle shell and in water, with 60 % of the dyes outside the particle shell (i.e., sensing pure water). Another indication that above the TVPT most of the ODNs are oriented with the dye toward the water phase is that the mobility of the dye covalently bound to the ODNs is identical in water and in the collapsed particle shell. The hybridization efficiency between an ODN supported in the particle shell (by adsorbing the ODN below TVPT and subsequently increasing the temperature above TVPT) and the complementary ODN in solution is identical to that of hybridization in water. This result opens good perspectives toward the use of the core-shell thermoresponsive nanoparticles as supports in DNA bioassays.

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