Di-amidosils with tunable structure, morphology and emission quantum yield: the role of hydrogen bonding

2015 ◽  
Vol 3 (26) ◽  
pp. 6844-6861 ◽  
Author(s):  
S. C. Nunes ◽  
J. Hümmer ◽  
V. T. Freitas ◽  
R. A. S. Ferreira ◽  
L. D. Carlos ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Variable Structure ◽  
Photoluminescence Properties ◽  
Experimental Conditions ◽  
Yield Value ◽  
Structure Morphology ◽  
Tunable Structure ◽  
Degree Of Order ◽  
Emission Quantum Yield

Di-amidosil hybrids with variable structure, morphology and photoluminescence properties were obtained using different experimental conditions. A correlation between the emission quantum yield value and the degree of order of the amide–amide hydrogen-bonded array was established for mono- and di-amidosils.

scholarly journals Correction: Di-amidosils with tunable structure, morphology and emission quantum yield: the role of hydrogen bonding

2015 ◽  
Vol 3 (31) ◽  
pp. 8272-8272 ◽  
Author(s):  
S. C. Nunes ◽  
J. Hümmer ◽  
V. T. Freitas ◽  
R. A. S. Ferreira ◽  
L. D. Carlos ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Quantum Yield ◽  
Structure Morphology ◽  
Tunable Structure ◽  
Emission Quantum Yield

Correction for ‘Di-amidosils with tunable structure, morphology and emission quantum yield: the role of hydrogen bonding’ by S. C. Nunes et al., J. Mater. Chem. C, 2015, 3, 6844–6861.

Solvatochromic effects in absorption and luminescence spectra and stability of emission quantum yield of carbon nanoparticles (part I)

2021 ◽  
Vol 7 ◽  
pp. 5-24
Author(s):  
S. A. Kazaryan ◽  
◽  
V. N. Nevolin ◽  
S. Kh. Pilosyan ◽  
◽  
...  
Keyword(s):  
Quantum Yield ◽  
Carbon Nanoparticles ◽  
Significant Contribution ◽  
Luminescence Spectra ◽  
Specific Interactions ◽  
Fundamental Properties ◽  
Wide Range ◽  
Absorption And Luminescence Spectra ◽  
Emission Quantum Yield

The features of the solvatochromic effects of absorption (Ab) and photoluminescence (PL) spectra, as well as the quantum yield of emission (QYE) of carbon nanoparticles (CNPs) synthesized by various methods from a mixture of citric acid and nitrogen-containing precursors, in protic and aprotic solvents have been studied. It has been shown that the parameters of the spectra Ab, PL and the QYE value of particle solutions to a large extent depend on the method, conditions and modes of synthesis, the method of modification and separation of CNPs, the types and composition of precursors, and also the fundamental properties and pH of solvents. In solvents with a dielectric constant of 4.5 – 109.5, the QYE value of particles varies in a wide range from 10.8 to 100.0 %, and the PL band peak shifts from 466.4 to 536.8 nm. The presence of strong solvatochromic effects in the spectra of Ab and PL particles was shown, and the important role of the processes of protonation and deprotonation of surface groups of CNPs was established. The influence of universal and specific interactions on the spectroscopic parameters of CNPs has been investigated, and a significant contribution to the solvatochromic effects of specific interactions has been demonstrated.

Site of Lysosome Production During Hepatic Injury

1969 ◽  
Vol 27 ◽  
pp. 348-349
Author(s):  
Nalin J. Unakar
Keyword(s):  
Electron Microscopy ◽  
Golgi Apparatus ◽  
Mouse Liver ◽  
Hepatic Injury ◽  
Close Approximation ◽  
Experimental Conditions ◽  
Toxic Injury

The increased number of lysosomes as well as the close approximation of lysosomes to the Golgi apparatus in tissue under variety of experimental conditions is commonly observed. These observations suggest Golgi involvement in lysosomal production. The role of the Golgi apparatus in the production of lysosomes in mouse liver was studied by electron microscopy of liver following toxic injury by CCI4.

The Affiliative Role of Empathy in Everyday Interpersonal Interactions

2019 ◽  
Author(s):  
Whitney R. Ringwald ◽  
Aidan G.C. Wright
Keyword(s):  
Individual Differences ◽  
Structural Equation ◽  
Community Sample ◽  
Empirical Support ◽  
Interpersonal Behavior ◽  
Equation Modeling ◽  
Experimental Conditions ◽  
Student Sample ◽  
Ecological Momentary

Empathy theoretically serves an affiliative interpersonal function by satisfying motives for intimacy and union with others. Accordingly, empathy is expected to vary depending on the situation. Inconsistent empirical support for empathy’s affiliative role may be due to methodology focused on individual differences in empathy or differences between controlled experimental conditions, which fail to capture its dynamic and interpersonal nature. To address these shortcomings, we used ecological momentary assessment to establish typical patterns of empathy across everyday interactions. Associations among empathy, affect, and interpersonal behavior of self and interaction partner were examined in a student sample (N=330), then replicated in a pre-registered community sample (N=279). Multi-level structural equation modeling was used to distinguish individual differences in empathy from interaction-level effects. Results show people are more empathetic during positively-valanced interactions with others perceived as warm and when expressing warmth. By confirming the typically affiliative role of empathy, existing research to the contrary can be best understood as exceptions to the norm.

scholarly journals Comparative investigation of lasing and amplification performance in cryogenic Yb:YLF systems

2021 ◽  
Vol 127 (3) ◽  
Author(s):  
Umit Demirbas ◽  
Martin Kellert ◽  
Jelto Thesinga ◽  
Yi Hua ◽  
Simon Reuter ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Estimation Method ◽  
Laser Cavity ◽  
Comparative Investigation ◽  
Limiting Factor ◽  
Experimental Conditions ◽  
Temperature Estimation ◽  
Transverse Temperature ◽  
First Time

AbstractWe present detailed experimental results with cryogenic Yb:YLF gain media in rod-geometry. We have comparatively investigated continuous-wave (cw) lasing and regenerative amplification performance under different experimental conditions. In the cw lasing experiments effect of crystal doping, cw laser cavity geometry and pump wavelength on lasing performance were explored. Regenerative amplification behavior was analyzed and the role of depolarization losses on performance was investigated. A recently developed temperature estimation method was also employed for the first time in estimating average crystal temperature under lasing conditions. It is shown that the thermal lens induced by transverse temperature gradients is the main limiting factor and strategies for future improvements are discussed. To the best of our knowledge, the achieved results in this study (375 W in cw, and 90 W in regenerative amplification) are the highest average powers ever obtained from this system via employing the broadband E//a axis.

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