scholarly journals Aggregation-induced emission from silole-based lumophores embedded in organic–inorganic hybrid hosts

2021 ◽  
Vol 9 (39) ◽  
pp. 13914-13925
Author(s):  
Guanpeng Lyu ◽  
Thomas J. F. Southern ◽  
Bethan L. Charles ◽  
Maxime Roger ◽  
Philippe Gerbier ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Inorganic Hybrid ◽  
Aggregation Induced Emission ◽  
Enhanced Photoluminescence ◽  
Covalent Grafting ◽  
Physical Mixing

The incorporation of silole-based lumophores into a photoactive organic–inorganic ureasil host via covalent grafting or physical mixing results in enhanced photoluminescence through aggregation and host–guest energy transfer.

Efficient artificial light-harvesting systems based on aggregation-induced emission constructed in supramolecular gels

Soft Matter ◽  
2021 ◽  
Author(s):  
Xinxian Ma ◽  
bo qiao ◽  
Jinlong Yue ◽  
JingJing Yu ◽  
yutao geng ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Rhodamine B ◽  
Fluorescent Dyes ◽  
Light Harvesting ◽  
Artificial Light ◽  
Efficient Energy Transfer ◽  
Aggregation Induced Emission ◽  
Efficient Energy ◽  
Harvesting Systems ◽  
Acyl Hydrazone

Based on a new designed acyl hydrazone gelator (G2), we developed an efficient energy transfer supramolecular organogel in glycol with two different hydrophobic fluorescent dyes rhodamine B (RhB) and acridine...

scholarly journals Appearance of efficient luminescence energy transfer in doped orthovanadate nanocrystals

2017 ◽  
Vol 50 (3) ◽  
pp. 787-794 ◽  
Author(s):  
Swati Bishnoi ◽  
G. Swati ◽  
Paramjeet Singh ◽  
V. V. Jaiswal ◽  
Mukesh K. Sahu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Band Gap ◽  
Photoluminescence Intensity ◽  
X Ray Diffraction ◽  
Synthesis Mechanism ◽  
Enhanced Photoluminescence ◽  
Nir Absorption ◽  
Decay Parameters

This paper reports the detailed synthesis mechanism and the structural, morphological and optical characterization of ultraviolet (∼311 nm) excitable samarium doped gadolinium yttrium orthovanadate, (Gd,Y)VO4:Sm3+, nanocrystals. X-ray diffraction and Rietveld refinement studies confirmed that the synthesized samples crystallize in a tetragonal structure withI41/amdspace group. The enhanced photoluminescence intensity of (Gd,Y)VO4:Sm3+compared with the existing YVO4:Sm3+phosphor clearly indicates the significant role of Gd3+ions. This has been attributed to the sensitization of the6PJenergy level of Gd3+ions by energy transfer from orthovanadate (VO43−) ions and subsequent energy trapping by Sm3+ions. The energy transfer from VO43−to Sm3+viaGd3+ions as intermediates and concentration quenching of Gd3+luminescence are discussed in detail. The optical band gap of the as-prepared nanocrystals has been estimated using UV–vis–NIR absorption spectroscopy, which reveals a slightly higher band gap (3.75 eV) for YVO4as compared to GdYVO4(3.50 eV). Furthermore, confocal microcopy, decay parameters and Commission Internationale de l'Eclairage chromatic coordinates have supplemented these studies, which established the suitability of these nanophosphors for achieving spectral conversion in silicon solar cells.

Enhanced photoluminescence by excitation energy transfer in thin films consisting of fluorescent conjugated polymer and porphyrin

2018 ◽  
Vol 653 ◽  
pp. 136-142 ◽  
Author(s):  
Hitoshi Mizuno ◽  
Shunsuke Nasu ◽  
Koichiro Kitamura ◽  
Tamao Aoki-Matsumoto ◽  
Akihisa Fujita ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Excitation Energy ◽  
Conjugated Polymer ◽  
Excitation Energy Transfer ◽  
Enhanced Photoluminescence

Pressure-Induced Blue-Shifted and Enhanced Emission: A Cooperative Effect between Aggregation-Induced Emission and Energy-Transfer Suppression

2020 ◽  
Vol 142 (3) ◽  
pp. 1153-1158 ◽  
Author(s):  
Haichao Liu ◽  
Yarong Gu ◽  
Yuxiang Dai ◽  
Kai Wang ◽  
Shitong Zhang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Cooperative Effect ◽  
Aggregation Induced Emission
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