Self-catalyzing photoredox polymerization for recyclable polymer catalysts

2021 ◽  
Vol 12 (15) ◽  
pp. 2205-2209
Author(s):  
Jacob J. Lessard ◽  
Georg M. Scheutz ◽  
Angie B. Korpusik ◽  
Rebecca A. Olson ◽  
C. Adrian Figg ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Eosin Y ◽  
Photoelectron Energy

A photoactive eosin Y-derived monomer was developed that can induce photoelectron/energy transfer, while simultaneously partaking in the polymerization as a monomer, affording polymer catalysts with tunable eosin Y incorporations.

Double dye cubic-sensitized solar cell based on Förster resonant energy transfer

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 10026-10032 ◽  
Author(s):  
Wenxia Li ◽  
Jingbo Zhang ◽  
Yingyu Cao ◽  
Yuan Lin
Keyword(s):  
Energy Transfer ◽  
Spectral Response ◽  
Dye Sensitized Solar Cells ◽  
Eosin Y ◽  
Zno Thin Film ◽  
Resonant Energy ◽  
Dye Sensitized ◽  
Response Range ◽  
Resonant Energy Transfer ◽  
Sensitized Solar Cells

To extend the spectral response range of dye-sensitized solar cells through Förster resonant energy transfer, eosin Y and rhodamine B were chosen as an donor and a acceptor to cubic-sensitize nanocrystalline ZnO thin film.

Isomérisation photosensibilisée par des colorants et photoréduction de l'azobenzène en solution. II

1974 ◽  
Vol 52 (10) ◽  
pp. 1858-1867 ◽  
Author(s):  
Jacques Ronayette ◽  
René Arnaud ◽  
Jacques Lemaire
Keyword(s):  
Methylene Blue ◽  
Energy Transfer ◽  
Quantum Yield ◽  
Rose Bengal ◽  
Experimental Results ◽  
The Other ◽  
Eosin Y ◽  
Triplet States ◽  
Trans Form ◽  
Photochemical Isomerization

The photochemical isomerization of azobenzene in solution can be sensitized by dyes which have low-lying triplet states (rose Bengal, eosin Y, fluorescein, methylene blue) but cannot be inhibited by such compounds. The two triplet levels, Tβc and Tαc of the cis form are indistinguishable experimentally. On the other hand, the experimental results verify the existence of two triplet levels, Tβt and Tαt, with different properties, in the trans form. Population, by energy transfer, of the lower triplet, Tαt, leads to isomerization with a quantum yield near 0.5, whereas population of the triplet Tβt only rarely leads to isomerization (quantum yield about 0.03).The photoreduction of azobenzene in isopropanol also has been studied. Only the cis form is photoreducible and it is very difficult experimentally to determine whether this photoreduction can be sensitized.A Jablonski diagram of the two forms of azobenzene is presented to correlate these observations. [Journal translation]

Chemiluminescence from the Action of Singlet Oxygen (1Δg) on Chlorophyll a and some other Luminescing Substances

1971 ◽  
Vol 26 (3) ◽  
pp. 260-263 ◽  
Author(s):  
J. Stauff ◽  
H. Fuhr
Keyword(s):  
Energy Transfer ◽  
Singlet Oxygen ◽  
Chlorophyll A ◽  
Rhodamine B ◽  
Spectral Distribution ◽  
Chemical Oxidation ◽  
Eosin Y ◽  
Interference Filters ◽  
Physical Energy ◽  
Oxidation Mechanisms

In systems containing singlet-oxygen and aromatic fluorescers energy transfer from singletoxygen dimers to the dye should be observable by emission of the fluorescer. In order to prove this hypothesis, externally generated singlet-oxygen (1Δg) was bubbled through the solutions of dyes (chlorophyll a, eosin y, rhodamine b, luminol, rubrene and acridine orange) in organic solvents.Luminescence could be observed and its spectral distribution analyzed by sharp cut-off filters and interference filters (rubrene) . Spectra, rates of oxidation, addition of quenchers and the long lasting time dependence of the reported reactions lead to the conclusion that the observed afterglow is due to chemical oxidation mechanisms producing a chemiluminescence. Therefore an excitation of the substances investigated in these experiments by simple physical energy transfer seems not to be predominant.

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

Gas Kinetics and Energy Transfer

2015 ◽  
Keyword(s):  
Energy Transfer ◽  
Gas Kinetics

Gas Kinetics and Energy Transfer

1978 ◽  
Keyword(s):  
Energy Transfer ◽  
Gas Kinetics

Gas Kinetics and Energy Transfer

1977 ◽  
Keyword(s):  
Energy Transfer ◽  
Gas Kinetics

Influence of adiabatic interactions on the energy transfer in molecular collisions)

Physica ◽  
1954 ◽  
Vol 3 (7-12) ◽  
pp. 1169-1180
Author(s):  
F DEWETTE ◽  
Z SLAWSKY
Keyword(s):  
Energy Transfer ◽  
Molecular Collisions
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