Visible-light-induced photochemistry of 2,3-dimethyl-2-butene.N2O4 charge-transfer complexes in solid inert matrixes at 75 K

1993 ◽  
Vol 97 (6) ◽  
pp. 1178-1183 ◽  
Author(s):  
Fritz Blatter ◽  
Heinz Frei
Keyword(s):  
Charge Transfer ◽  
Visible Light ◽  
Charge Transfer Complexes

Iodinated Polystyrene for Polymeric Charge Transfer Complexes: Toward High-Performance Near-UV and Visible Light Macrophotoinitiators

2019 ◽  
Vol 52 (9) ◽  
pp. 3448-3453 ◽  
Author(s):  
Alexandre Baralle ◽  
Patxi Garra ◽  
Bernadette Graff ◽  
Fabrice Morlet-Savary ◽  
Céline Dietlin ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Visible Light ◽  
High Performance ◽  
Charge Transfer Complexes

scholarly journals Water-Soluble Visible Light Sensitive Photoinitiating System Based on Charge Transfer Complexes for the 3D Printing of Hydrogels

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3195
Author(s):  
Hong Chen ◽  
Mehdi Vahdati ◽  
Pu Xiao ◽  
Frédéric Dumur ◽  
Jacques Lalevée
Keyword(s):  
Charge Transfer ◽  
3D Printing ◽  
Visible Light ◽  
Water Solubility ◽  
Charge Transfer Complex ◽  
Water Soluble ◽  
Charge Transfer Complexes ◽  
Free Radical Photopolymerization ◽  
Potential Applications ◽  
A Charge

The development of visible-light 3D printing technology by using water-soluble initiating systems has attracted widespread attention due to their potential applications in the manufacture of hydrogels. Besides, at present, the preparation of water-soluble photoinitiators suitable for visible light irradiation (such as LEDs) still remains a challenge. Therefore, this work is devoted to developing water-soluble photoinitiators (PI)/photoinitiating systems (PIS) upon irradiation with a LED @ 405 nm. In detail, a new water-slightly-soluble chalcone derivative dye [(E)-3-(4-(dimethylamino) phenyl)-1-(4-(2-(2-(2-methoxyethoxy) ethoxy) ethoxy) phenyl) prop-2-en-1-one] was synthesized here and used as a PI with a water-soluble coinitiator, i.e., triethanolamine (TEA) which was also used as an electron donor. When combined together, a charge transfer complex (CTC) formed immediately which exhibited excellent initiating ability for the free radical photopolymerization of poly(ethyleneglycol)diacrylate (PEG-DA). In light of the powerful CTC effect, the [dye-TEA] CTC could not only exhibit enhanced water solubility and mechanical properties but could also be effectively applied for 3D printing. This CTC system is environmentally friendly and cost-saving which demonstrates a great potential to prepare hydrogels via photopolymerization.

Nitrogen(II) Oxide Charge Transfer Complexes on TiO2: A New Source for Visible-Light Activity

2015 ◽  
Vol 119 (9) ◽  
pp. 4488-4501 ◽  
Author(s):  
J. Freitag ◽  
A. Domínguez ◽  
T. A. Niehaus ◽  
A. Hülsewig ◽  
R. Dillert ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Visible Light ◽  
Charge Transfer Complexes ◽  
Oxide Charge ◽  
Light Activity

scholarly journals Radical Perfluoroalkylation Enabled by a Catalytically Generated Halogen Bonding Complex and Visible Light Irradiation

2021 ◽  
Author(s):  
Tarannum Tasnim ◽  
Calvin Ryan ◽  
Miranda Christensen ◽  
Christopher Fennell ◽  
Spencer Pitre
Keyword(s):  
Charge Transfer ◽  
Complex Formation ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Redox Reactions ◽  
Charge Transfer Complex ◽  
Halogen Bonding ◽  
Charge Transfer Complexes ◽  
Computational Studies ◽  
The Many

Despite the many recent advances in exploiting stoichiometric charge-transfer complexes in visible light promoted single-electron redox reactions, catalytic approaches to charge-transfer complex formation remain limited. This report describes the radical perfluoroalkylation of electron-rich (hetero)arenes and iodoperfluoroalkylation of alkenes and alkynes promoted by a substituted hydroquinone catalyst. Mechanistic and computational studies indicate that the reaction is initiated by the formation of a visible light absorbing halogen bonding complex between the hydroquinone catalyst and the perfluoroalkyl iodide radical precursor.

Visible light photoinitiating systems by charge transfer complexes: Photochemistry without dyes

2020 ◽  
Vol 107 ◽  
pp. 101277 ◽  
Author(s):  
Patxi Garra ◽  
Jean Pierre Fouassier ◽  
Sami Lakhdar ◽  
Yusuf Yagci ◽  
Jacques Lalevée
Keyword(s):  
Charge Transfer ◽  
Visible Light ◽  
Charge Transfer Complexes

Magnetic properties of new charge-transfer complexes based on manganese porphyrins

1997 ◽  
Vol 90 (3) ◽  
pp. 407-413
Author(s):  
MARC KELEMEN ◽  
CHRISTOPH WACHTER ◽  
HUBERT WINTER ◽  
ELMAR DORMANN ◽  
RUDOLF GOMPPER ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Charge Transfer ◽  
Charge Transfer Complexes ◽  
Manganese Porphyrins

Charge Transfer Complexation Boosts Molecular Conductance Through Fermi Level Pinning

2018 ◽  
Author(s):  
Kun Wang ◽  
Andrea Vezzoli ◽  
Iain Grace ◽  
Maeve McLaughlin ◽  
Richard Nichols ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Single Molecule ◽  
Quantum Interference ◽  
Transmission Function ◽  
Scanning Tunneling ◽  
Charge Transfer Complexes ◽  
Tunneling Microscopy ◽  
Quantum Interference Effect ◽  
Single Molecule Junctions ◽  
Charge Transfer Complexation

We have used scanning tunneling microscopy to create and study single molecule junctions with thioether-terminated oligothiophene molecules. We find that the conductance of these junctions increases upon formation of charge transfer complexes of the molecules with tetracyanoethene, and that the extent of the conductance increase is greater the longer is the oligothiophene, i.e. the lower is the conductance of the uncomplexed molecule in the junction. We use non-equilibrium Green's function transport calculations to explore the reasons for this theoretically, and find that new resonances appear in the transmission function, pinned close to the Fermi energy of the contacts, as a consequence of the charge transfer interaction. This is an example of a room temperature quantum interference effect, which in this case boosts junction conductance in contrast to earlier observations of QI that result in diminished conductance.<br>

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