Donor–acceptor fluorophores as efficient energy transfer photocatalysts for [2 + 2] photodimerization

2020 ◽  
Vol 18 (19) ◽  
pp. 3707-3716
Author(s):  
Qing-An Wu ◽  
Feng Chen ◽  
Chen-Chao Ren ◽  
Xue-Fen Liu ◽  
Hao Chen ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Precious Metal ◽  
Isomerization Reaction ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Donor Acceptor

Donor–acceptor fluorophores can act as efficient energy transfer photocatalysts to activate enone substrates, realizing photodimerization and isomerization reaction of enone substrates without precious metal photocatalysts.

Near infra-red dyes based on pyrene aza-BODIPYs

2018 ◽  
Vol 42 (8) ◽  
pp. 5875-5888 ◽  
Author(s):  
Naresh Balsukuri ◽  
Nayan Jyoti Boruah ◽  
Praseetha E. Kesavan ◽  
Iti Gupta
Keyword(s):  
Energy Transfer ◽  
Emission Spectra ◽  
Efficient Energy Transfer ◽  
Absorption And Emission ◽  
Efficient Energy ◽  
Absorption And Emission Spectra ◽  
Infra Red ◽  
Donor Acceptor

Donor–acceptor type pyrene substituted aza-BODIPYs are reported, and efficient energy transfer from pyrene moieties to the aza-BODIPY core caused significant red shifts in their absorption and emission spectra.

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...

Efficient Energy Transfer in Mixed Columnar Stacks of Hydrogen-Bonded Oligo(p-phenylene vinylene)s in Solution

2004 ◽  
Vol 43 (15) ◽  
pp. 1976-1979 ◽  
Author(s):  
Freek J. M. Hoeben ◽  
Laura M. Herz ◽  
Clément Daniel ◽  
Pascal Jonkheijm ◽  
Albertus P. H. J. Schenning ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Phenylene Vinylene ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Hydrogen Bonded

Hybrid organic/inorganic semiconductor nanostructures with highly efficient energy transfer

2012 ◽  
Vol 22 (21) ◽  
pp. 10816 ◽  
Author(s):  
Diana Savateeva ◽  
Dzmitry Melnikau ◽  
Vladimir Lesnyak ◽  
Nikolai Gaponik ◽  
Yury P. Rakovich
Keyword(s):  
Energy Transfer ◽  
Semiconductor Nanostructures ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Highly Efficient ◽  
Inorganic Semiconductor

Photochemistry of Anthracene-Appended Cobalt(III) Cyclam Complexes

2008 ◽  
Vol 61 (8) ◽  
pp. 585 ◽  
Author(s):  
Simon Boyd ◽  
Kenneth P. Ghiggino ◽  
W. David McFadyen
Keyword(s):  
Energy Transfer ◽  
Ligand Exchange ◽  
Large Excess ◽  
Release Process ◽  
Efficient Energy Transfer ◽  
Ligand Exchange Reaction ◽  
Efficient Energy ◽  
Exchange Processes ◽  
Cyclam Complexes ◽  
In Cis

The photochemistry of two anthracene-appended cobalt(iii) cyclam complexes is explored with a view to demonstrate a photoactivated ligand release process. The ligand exchange processes that occur in the complexes cis-[CoL(NO2)(ONO)]+ and trans-[CoL(NO2)(ONO)]+ in which L = 6-(anthracen-9-ylmethyl)-1,4,8,11-tetraazacyclotetradecane were monitored upon illumination of the anthracenyl chromophore at 360 nm in the presence of a large excess of thiocyanate. The trans-[CoL(NO2)(ONO)]+ complex underwent a ligand exchange reaction in the absence of light and displayed an enhancement of the reaction upon illumination. In contrast the cis-[CoL(NO2)(ONO)]+ complex was stable in the dark but displayed a significant quantum yield of photoactivated ligand release (Φ = 0.19). It is proposed that in cis-[CoL(NO2)(ONO)]+ the photoexcited anthracenyl chromophore undergoes efficient energy transfer to the cobalt(iii) cyclam before ligand exchange. Complexes based on the anthracenylcyclam–cobalt(iii) framework may be potentially useful candidates as photoactivated ligand release systems.

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