Charge transfer liquid: a stable donor–acceptor interaction in the solvent-free liquid state

2019 ◽  
Vol 55 (63) ◽  
pp. 9371-9374 ◽  
Author(s):  
Vivek Chandrakant Wakchaure ◽  
Lekshmi V. Pillai ◽  
Goudappagouda Goudappagouda ◽  
Kayaramkodath Chandran Ranjeesh ◽  
Suman Chakrabarty ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Liquid State ◽  
High Stability ◽  
Solvent Free ◽  
Acceptor Interaction ◽  
Donor Acceptor

A new charge transfer solvent-free liquid having high stability even with donor–acceptor ratio of 1000 : 1 is demonstrated.

Donor–acceptor interaction-driven self-assembly of amphiphilic rod–coil molecules into supramolecular nanoassemblies

Nanoscale ◽  
2017 ◽  
Vol 9 (45) ◽  
pp. 17975-17982 ◽  
Author(s):  
Shengsheng Yu ◽  
Yuntian Yang ◽  
Tie Chen ◽  
Jingzhe Xu ◽  
Long Yi Jin
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Acceptor Interaction ◽  
Donor Acceptor ◽  
Spherical Micelles

Pyrene-based amphiphiles self-assemble into nanofibers, spherical micelles and multilayer nanotubes. The addition of TNF allowed polymerization of these objects through charge-transfer interactions to form various supramolecular nanoassemblies.

Contrasting Behaviour of Exciplex Ensembles in the Diastereodifferentiating Paternò–Büchi Reaction of Chiral Cyanobenzoate with Naphthyl- and Phenylethenes on Direct or Charge-Transfer Excitation

2015 ◽  
Vol 68 (11) ◽  
pp. 1693 ◽  
Author(s):  
Keisuke Nagasaki ◽  
Yoshihisa Inoue ◽  
Tadashi Mori
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Charge Transfer Complex ◽  
Small Temperature ◽  
Acceptor Interaction ◽  
Subtle Change ◽  
Excited Species ◽  
Donor Acceptor ◽  
Charge Transfer Excitation ◽  
The Difference

The diastereodifferentiating Paternò–Büchi reaction of chiral cyanobenzoate with 1-(1-naphthyl)-1-phenylethene was compared with those with 1,1-diphenylethene on direct and charge-transfer excitations. By desymmetrization of the donor, four diastereomeric oxetane products were formed on photolysis in excellent combined yields. Increase in donor strength induced a stronger charge-transfer interaction both in ground and excited states. Thus, the difference in diastereoselectivities with two different excitation modes (i.e. direct versus charge-transfer) became less significant with a naphthyl derivative as donor. A subtle change of donor–acceptor interaction was shown to have profound effect on the nature of the excited-state complexes and thus the product (stereo)selectivities. Despite a small temperature dependence, an Eyring-type study on the diastereoselectivities confirmed that the excited charge-transfer complex is an excited species distinct from the conventional exciplex.

scholarly journals Facet-Dependent Interfacial Charge Transfer in TiO2/Nitrogen-Doped Graphene Quantum Dots Heterojunctions for Visible-Light Driven Photocatalysis

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 345 ◽  
Author(s):  
Ou ◽  
Li ◽  
Lyu ◽  
Gui ◽  
Sun ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Graphene Quantum Dots ◽  
Anatase Tio2 ◽  
Charge Carriers ◽  
Acceptor Interaction ◽  
Nitrogen Doped ◽  
Donor Acceptor ◽  
Interfacial Charge

Interfacial charge transfer is crucial in the efficient conversion of solar energy into fuels and electricity. In this paper, heterojunction composites were fabricated, comprised of anatase TiO2 with different percentages of exposed {101} and {001} facets and nitrogen-doped quantum dots (NGQDs) to enhance the transfer efficiency of photo-excited charge carriers. The photocatalytic performances of all samples were evaluated for RhB degradation under visible light irradiation, and the hybrid containing TiO2 with 56% {001} facets demonstrated the best photocatalytic activity. The excellent photoactivity of TiO2/NGQDs was owed to the synergistic effects of the following factors: (i) The unique chemical features of NGQDs endowed NGQDs with high electronic conductivities and provided its direct contact with the TiO2 surface via forming Ti–O–C chemical bonds. (ii) The co-exposed {101} and {001} facets were beneficial for the separation and transfer of charge carriers in anatase TiO2. (iii) The donor-acceptor interaction between NGQDs and electron-rich {101} facets of TiO2 could remarkably enhance the photocurrent, thus hindering the charge carriers recombination rate. Extensive characterization of their physiochemical properties further showed the synergistic effect of facet-manipulated electron-hole separation in TiO2 and donor-acceptor interaction in graphene quantum dots (GQDs)/TiO2 on photocatalytic activity.

Complexation par transfert de charge de la chlorpromazine en présence d'iode; action thyroïdienne sécondaire de cette molécule

1984 ◽  
Vol 62 (9) ◽  
pp. 1807-1811 ◽  
Author(s):  
Anne-Catherine Absil ◽  
Jacques Buxeraud ◽  
Claude Raby
Keyword(s):  
Charge Transfer ◽  
Thermodynamic Parameters ◽  
Molecular Interaction ◽  
Electron Spectroscopy ◽  
Formation Constant ◽  
Charge Transfer Complex ◽  
Tertiary Amines ◽  
Acceptor Interaction ◽  
Donor Acceptor ◽  
A Charge

Molecular interaction between iodine and chlorpromazine is investigated by electron spectroscopy. Iodine forms a charge transfer complex with chlorpromazine, with 1:1 stoichiometry and of the n–σ type. The values of the formation constant (Kc at20 °C = 3166 ± 19 L mol−1) and thermodynamic parameters (ΔH0 = −11.22 ± 0.11 kcal mol−1, ΔS0 = −22.29 ± 0.38 cal mol−1 K−1) show a strong donor–acceptor interaction, comparable to that obtained with tertiary amines. The formation constant is compared to those obtained with antithyroid molecules. Chlorpromazine appears to have no effect on the intrathyroid cycle of iodine.

An Excimer to Exciplex Transition through Realization of Donor-Acceptor Interaction in Luminescent Solvent-free Liquid

Nanoscale ◽  
2021 ◽  
Author(s):  
Vivek Wakchaure ◽  
Goudappagouda Patil ◽  
Tamal Das ◽  
Sapna Ravindranathan ◽  
Santhosh Babu Sukumaran
Keyword(s):  
Quantum Yield ◽  
Solvent Free ◽  
Organic Liquids ◽  
Luminescent Materials ◽  
Acceptor Interaction ◽  
Donor Acceptor ◽  
Color Tunability

Luminescent solvent-free organic liquids are known for their enhanced quantum yield, color tunability, and availability of a matrix for other dopants to generate hybrid luminescent materials with improved features for...

Photoinduced Electron Transfer in Dyads with (R)-/(S)-Naproxen and (S)-Tryptophan

2017 ◽  
Vol 231 (3) ◽  
Author(s):  
Ekaterina A. Khramtsova ◽  
Alexandra A. Ageeva ◽  
Alexander A. Stepanov ◽  
Viktor F. Plyusnin ◽  
Tatyana V. Leshina
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Amino Acid ◽  
Quantum Yields ◽  
Intramolecular Electron Transfer ◽  
Active Centers ◽  
Acceptor Interaction ◽  
Enzyme Binding ◽  
Fluorescence Quantum Yields ◽  
Donor Acceptor

AbstractShort-lived intermediates arising from the donor-acceptor interaction of non-steroidal anti-inflammatory drug (NSAID) – (S)-naproxen (NPX) and its (R)-enantiomer with the tryptophan amino acid residue (Trp) have been studied by spin chemistry and photochemistry methods. The donor-acceptor interaction has caried out in a model linked system – dyad under the UV-irradiation. Interest in the NPX-Trp dyad diastereomers is connected with the possibility of using them as models of ligand-enzyme binding as long as amino acid residues are located at the enzyme’s active centers. It is these residues that interact with NSAID during the binding. It is widely thought that charge transfer processes are involved in the process of drug-enzyme binding. Withing this framework the role of charge transfer in NPX-Trp excited state quenching have been investigated. The analysis of the chemically induced dynamic nuclear polarization (CIDNP), as well as fluorescence kinetics and quantum yield in different polarity media has shown that the main channel of NPX fluorescence quenching is the intramolecular electron transfer between NPX and Trp fragments. Electron transfer rate constants and fluorescence quantum yields of diastereomers have demonstrated stereodifferentiation.

scholarly journals In-Depth Investigation of a Donor–Acceptor Interaction on the Heavy-Group-14@Group-13-Diyls in Transition-Metal Tetrylone Complexes: Structure, Bonding, and Property

ACS Omega ◽  
2020 ◽  
Vol 5 (33) ◽  
pp. 21271-21287
Author(s):  
Huynh Thi Phuong Loan ◽  
Thanh Q. Bui ◽  
Tran Thi Ai My ◽  
Nguyen Thi Thanh Hai ◽  
Duong Tuan Quang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Group 14 ◽  
Acceptor Interaction ◽  
Group 13 ◽  
Donor Acceptor ◽  
Heavy Group
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