Nonresonant energy transfer interactions between randomly distributed guest molecules in host lattices

1976 ◽  
Vol 65 (8) ◽  
pp. 3102-3107 ◽  
Author(s):  
W. A. Wassam ◽  
F. K. Fong
Keyword(s):  
Energy Transfer ◽  
Guest Molecules ◽  
Host Lattices

Kathodolumineszenz der Seltenerd-aktivierten Wirtsgitter Sr3La2W2O12 und Ca2La0,5Na0,5WO6

1985 ◽  
Vol 40 (5) ◽  
pp. 503-507 ◽  
Author(s):  
R. Braun ◽  
R. Otto ◽  
W. Wischert ◽  
S. Kemmler-Sack
Keyword(s):  
Electronic Structure ◽  
Energy Transfer ◽  
Rare Earth ◽  
Visible Region ◽  
Host Lattice ◽  
Rare Earth Ions ◽  
Emission Efficiency ◽  
Transfer Processes ◽  
Trivalent Rare Earth ◽  
Host Lattices

By activation of the host lattices Sr3La2W2O12 and Ca2La0,5Na0,5WO6 with the trivalent rare earth ions Ln3+ = Pr, Sm, Eu, Tb, Dy, Ho, Er a cathodoluminescence in the visible region is obtained. The influence of the electronic structure and concentration of the activator on the relative emission efficiency as well as the host lattice participation in the energy transfer processes are discussed.

Lumineszenzuntersuchungen zum Problem der Energieübertragung in organischen Molekülkristallen

1970 ◽  
Vol 25 (6) ◽  
pp. 955-966 ◽  
Author(s):  
F. Belitz
Keyword(s):  
Energy Transfer ◽  
Single Crystals ◽  
Fluorescence Spectra ◽  
Dipole Interaction ◽  
Main Process ◽  
Transfer Processes ◽  
Decay Times ◽  
Different Types ◽  
The Mean ◽  
Host Lattices

Abstract From fluorescence spectra and decay times of single crystals of 2.3-dimethylnaphthalene, phenanthrene and p-terphenyl doped with one or two different types of fluorescence molecules (anthracene and, or tetracene) informations about the energy transfer processes are obtained. For doping concentrations smaller than 4·10-4 Mol/Mol the transfer by excitons is the main process. The dipole-dipole interaction over distances more than 80 Å (14 mean molecular distances) can be excluded. The mean travelling distance of the excitons in the three host lattices was found to be 250 - 300 mean molecular distances.

A dendrimer facilitates resonance energy transfer between hydrophobic aromatic guest molecules in water

2016 ◽  
Vol 317 ◽  
pp. 125-131 ◽  
Author(s):  
Yashapal Singh ◽  
A. Mohan Raj ◽  
B.M. Kiran ◽  
J. Nithyanandhan ◽  
V. Ramamurthy ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Guest Molecules ◽  
Aromatic Guest

Luminescent Properties of Eu2+-Activated SrAl2Si2O8 as an Potential Blue Phosphor for near UV LED Chips

2013 ◽  
Vol 750-752 ◽  
pp. 956-960 ◽  
Author(s):  
Li Jun Luo ◽  
Yi Wen Zhu ◽  
Ping Chen
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Solid State Reaction ◽  
Luminescent Properties ◽  
Solid State Reaction Technique ◽  
Near Ultraviolet ◽  
Blue Phosphor ◽  
Uv Led ◽  
Host Lattices ◽  
Uv Range

The phosphors SrAl2Si2O8 doped with different Eu2+ concentration were prepared by solid-state reaction technique, and their photoluminescent properties at different temperature were investigated. With the increase of Eu2+ content, two emission bands can be observed and this can be interpreted as Eu2+ ions occupying two types of sites in the crystal lattice. And their lifetime is decreasing, this result can be due to energy transfer among Eu2+ ions nonradiately at higher concentration of Eu2+ ions in the host lattices. The phosphor SrAl2Si2O8:0.40Eu shares intense blue emitting with broad excitation in the near-UV range. This phosphor may be an excellent blue phosphor for near ultraviolet InGaN-based white diodes.

Adaptation of guest molecules: A simple system that amplifies the gentle perturbation of host lattices from nickel(II) to cobalt(II)

2016 ◽  
Vol 445 ◽  
pp. 96-102 ◽  
Author(s):  
Tien-Wen Tseng ◽  
Tzuoo-Tsair Luo ◽  
Jing-Yun Wu ◽  
Chen-Chuan Tsai ◽  
Chia-Yuan Huang ◽  
...  
Keyword(s):  
Simple System ◽  
Guest Molecules ◽  
Host Lattices

Dynamic, conjugated microporous polymers: visible light harvesting via guest-responsive reversible swelling

2016 ◽  
Vol 18 (1) ◽  
pp. 156-163 ◽  
Author(s):  
K. Venkata Rao ◽  
Ritesh Haldar ◽  
Tapas Kumar Maji ◽  
Subi J. George
Keyword(s):  
Energy Transfer ◽  
Visible Light ◽  
Room Temperature ◽  
Light Harvesting ◽  
Guest Molecules ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymers

Dynamic conjugated microporous polymers of pyrene entrap guest molecules rapidly at room temperature via swelling and show efficient host–guest energy-transfer.

Tuning the efficiency of multi-step energy transfer in a host–guest antenna system based on a chalcogenide semiconductor zeolite through acidification and solvation of guests

2015 ◽  
Vol 3 (44) ◽  
pp. 11747-11753 ◽  
Author(s):  
Dan-Dan Hu ◽  
Le Wang ◽  
Jian Lin ◽  
Fei Bu ◽  
Tao Wu
Keyword(s):  
Energy Transfer ◽  
Antenna System ◽  
Energy Transfer Efficiency ◽  
Transfer Efficiency ◽  
Chalcogenide Semiconductor ◽  
Guest Molecules ◽  
System P ◽  
Guest System

We report the tuning of energy transfer efficiency through acidification and solvation of guest molecules in a chalcogenide-based host–guest system.

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.

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