Intermolecular Triplet Energy Transfer in Naphthalene–Pentacene Mixed Crystals via Higher Excited Triplet States

1972 ◽  
Vol 51 (1) ◽  
pp. 155-159 ◽  
Author(s):  
G. Vaubel ◽  
L. Peter
Keyword(s):  
Energy Transfer ◽  
Mixed Crystals ◽  
Triplet States ◽  
Triplet Energy ◽  
Excited Triplet ◽  
Triplet Energy Transfer ◽  
Excited Triplet States

Luminescence and triplet energy transfer in mixed crystals. II. Three component systems

1969 ◽  
Vol 22 (10) ◽  
pp. 2085 ◽  
Author(s):  
KR Adam ◽  
MF O'Dwyer
Keyword(s):  
Energy Transfer ◽  
Concentration Dependence ◽  
Guest Molecule ◽  
Triplet Exciton ◽  
Mixed Crystals ◽  
Host Crystal ◽  
Triplet Energy ◽  
Guest Molecules ◽  
Component Systems ◽  
Triplet Energy Transfer

Triplet-triplet energy transfer between two guest molecules in a host crystal has been studied by observing the temperature and concentration dependence of the phosphorescence of the donor guest molecule. The results are interpreted in terms of transfer via the host triplet exciton band.

scholarly journals Multiplicity conversion based on intramolecular triplet-to-singlet energy transfer

2019 ◽  
Vol 5 (9) ◽  
pp. eaaw5978 ◽  
Author(s):  
A. Cravcenco ◽  
M. Hertzog ◽  
C. Ye ◽  
M. N. Iqbal ◽  
U. Mueller ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Triplet State ◽  
Triplet States ◽  
Spin States ◽  
Materials Chemistry ◽  
Excited Singlet ◽  
Excited Triplet ◽  
Dipole Interactions ◽  
Molecular Spin ◽  
Excited Triplet States

The ability to convert between molecular spin states is of utmost importance in materials chemistry. Förster-type energy transfer is based on dipole-dipole interactions and can therefore theoretically be used to convert between molecular spin states. Here, a molecular dyad that is capable of transferring energy from an excited triplet state to an excited singlet state is presented. The rate of conversion between these states was shown to be 36 times faster than the rate of emission from the isolated triplet state. This dyad provides the first solid proof that Förster-type triplet-to-singlet energy transfer is possible, revealing a method to increase the rate of light extraction from excited triplet states.

Luminescence and triplet energy transfer in mixed crystals. I. Two-component systems

1969 ◽  
Vol 22 (10) ◽  
pp. 2061 ◽  
Author(s):  
KR Adam ◽  
MF O'Dwyer
Keyword(s):  
Energy Transfer ◽  
Delayed Fluorescence ◽  
Mixed Crystals ◽  
Temperature Dependent ◽  
Triplet Energy ◽  
Component Systems ◽  
Two Component ◽  
Two Component Systems ◽  
Quantitative Results ◽  
Triplet Energy Transfer

Quantitative results are given for the temperature dependence of the intensities and decays of phosphorescence and delayed fluorescence in a number of two-component organic mixed crystals. These results are interpreted in terms of a kinetic model. For low guest concentrations, the guest phosphorescence decay is found to be first order and strongly temperature dependent with an activation energy different from that involved in energy transfer to the host triplet exciton level.

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