scholarly journals Freeze the dynamicity: charge transfer complexation assisted control over the reaction pathway

2019 ◽  
Vol 10 (43) ◽  
pp. 10035-10039 ◽  
Author(s):  
Nilotpal Singha ◽  
Basab Kanti Das ◽  
Bapan Pramanik ◽  
Saurav Das ◽  
Debapratim Das
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Reaction Pathway ◽  
Thiol Groups ◽  
Donor And Acceptor ◽  
Charge Transfer Complexation ◽  
Ct Complexes ◽  
Acceptor Molecules

Aqueous CT complexes of donor and acceptor molecules with reactive thiol groups were frozen and lyophilized to get alternate D–A assemblies in the solid state. Oxidation of the thiols resulted in asymmetric disulfides exclusively.

Charge-Transfer Crystal with Segregated Packing Structure Constructed with Hexaarylbenzene and Tetracyanoquinodimethane

CrystEngComm ◽  
2021 ◽  
Author(s):  
Rempei Ando ◽  
Mingoo Jin ◽  
Hajime Ito
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Electron Donor ◽  
Packing Structure ◽  
Donor And Acceptor ◽  
Solid State Materials ◽  
Electron Donor And Acceptor ◽  
Acceptor Molecules

Charge-transfer (CT) crystals bearing segregated domains between the electron donor and acceptor molecules are a promising platform for developing new organic functional solid-state materials. However, there is limited diversity in...

The bis(ethylenedithio)tetrathiafulvalene-based ionic charge-transfer complex with 2,3-dichloro-5,6-dicyano-p-benzoquinone

2013 ◽  
Vol 69 (4) ◽  
pp. 400-402
Author(s):  
Yuki Nakagawa ◽  
Yukihiro Takahashi ◽  
Jun Harada ◽  
Tamotsu Inabe
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Ionic Charge ◽  
One Dimensional ◽  
Face To Face ◽  
Ladder System ◽  
Donor And Acceptor ◽  
Ct Complex ◽  
Centrosymmetric Dimers ◽  
Ct Complexes

In the ionic charge-transfer (CT) complex composed of bis(ethylenedithio)tetrathiafulvalene (ET) and 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ), C10H8S8·C8Cl2N2O2, the donor and acceptor molecules both form centrosymmetric dimers associated by strong face-to-face π–π interactions. The disordered DDQ molecules form a one-dimensional π-stacked column, while the ET molecules form a two-leg ladder through additional short S...S contacts between adjacent π–π-bonded dimers. The crystal structure of ET–DDQ revealed in this study will provide a valuable example of the two-leg spin ladder system, which has rarely been reported for ET-based CT complexes.

A Naked-eye Colorimetric Indicator to Discriminate Aromatic Compounds by Solid-state Charge-transfer Complexation

2008 ◽  
Vol 37 (5) ◽  
pp. 550-551 ◽  
Author(s):  
Darshak R. Trivedi ◽  
Yuzo Fujiki ◽  
Yuta Goto ◽  
Norifumi Fujita ◽  
Seiji Shinkai ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Aromatic Compounds ◽  
Naked Eye ◽  
Colorimetric Indicator ◽  
Charge Transfer Complexation ◽  
State Charge

scholarly journals Controlling through-space and through-bond intramolecular charge transfer in bridged D-D’-A TADF Emitters

2021 ◽  
Author(s):  
Hector Gerardo Miranda-Salinas ◽  
Andrew P Monkman ◽  
Chih-Hao Chang ◽  
Hao-Che Kao ◽  
Dian Luo ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Intramolecular Charge Transfer ◽  
Donor And Acceptor ◽  
Donor Acceptor ◽  
Acceptor Molecules

Donor-Donor’-Acceptor molecules where the Donor’ bridges the Donor and Acceptor have different possible interaction pathways for charge transfer. Here we study a series of Donor-Donor’-Acceptor molecules, having the same Acceptor...

scholarly journals Charge transfer complexation of N,N-dimethyl-p-toluidine with nitrogen heteroaromatic cations as a model for association complexes in hydride transfer reactions

1988 ◽  
Vol 66 (10) ◽  
pp. 2532-2539 ◽  
Author(s):  
John W. Bunting ◽  
Mark A. Luscher
Keyword(s):  
Charge Transfer ◽  
Reaction Pathway ◽  
Hydride Transfer ◽  
Transfer Reactions ◽  
Acetonitrile Solution ◽  
Extinction Coefficients ◽  
Wavelength Absorption ◽  
Pyridinium Cations ◽  
Charge Transfer Complexation ◽  
Donor Species

Charge-transfer complexation of N,N-dimethyl-p-toluidine (DMT) with each of the following N-methyl cations has been investigated in acetonitrile solution at 25 °C: acridinium; phenanthridinium; 3-X-quinolinium and 4-X-isoquinolinium (X = H, Br, CONH2, CN); 5-nitroisoquinolinium; 3-X-pyridinium (X = CONH2, CN) (also the N-benzyl pyridinium cations); N,N′-dimethyl-4,4′-dipyridylium dication. Charge-transfer absorption maxima are reported, and extinction coefficients (εmax) at these maxima and association constants (K) for 1:1 complex formation have been evaluated from the dependence of absorbance upon [DMT]. In general, the longest wavelength absorption maximum increases with increasing association constant. There is a strictly linear relationship between εmax and 1/K. These observations are considered in the context of theories of charge-transfer spectra. Such charge-transfer species are considered as models for the association complexes that are believed to exist upon the reaction pathway for hydride transfer between heteroaromatic cations. Although some significant qualitative relationships are apparent, variations in susceptibility of heteroaromatic cations to charge-transfer complexation are much smaller than variations in the reactivity of these cations towards hydride donor species.

Elementorganische Verbindungen mit o-Phenylenresten, XVI . 2:1-Komplexe von 2,3,7,8-Tetramethoxychalcogenanthrenen mit Tetracyanethen / Organometallic Compounds with o-Phenylene Substituents, Part XVI 2:1-Complexes of 2,3,7,8-Tetramethoxychalcogenanthrenes with Tetracyanoethene

1989 ◽  
Vol 44 (2) ◽  
pp. 211-219 ◽  
Author(s):  
Peer Berges ◽  
Jens Kudnig ◽  
Günter Klar ◽  
Enrique Sánchez Martínez ◽  
Ricardo Díaz Calleja
Keyword(s):  
Temperature Dependence ◽  
Organometallic Compounds ◽  
Donor And Acceptor ◽  
Electrical Conductivities ◽  
Ct Complexes ◽  
Acceptor Molecules

The CT complexes 2Vn2EE'·TCNE (1, E = E' = S; 2, E = E' = Se; 3, E = S, E' = Se) are prepared by combining the solutions of the components in acetonitrile. The three com pounds are isostructural and built up by Vn2EE'/TCNE/Vn2EE' units in which a TCNE molecule is inserted into the cavity formed by two of the folded, oppositely arranged Vn2EE' molecules. In this arrangement of donor and acceptor molecules an optimum overlap of the corresponding HOMOs and LUMOs is guaranteed as can be seen from the CNDOand HAM 3 calculations. The temperature dependence of the electrical conductivities shows the com pounds 1-3 to be semiconductors with gap energies of 1.27, 1.17 and 1.19 eV , resp.

scholarly journals Binary charge-transfer complexes using pyromellitic acid dianhydride featuring C—H...O hydrogen bonds

2018 ◽  
Vol 74 (12) ◽  
pp. 1772-1777 ◽  
Author(s):  
Tania N. Hill ◽  
Andreas Lemmerer
Keyword(s):  
Charge Transfer ◽  
Hydrogen Bonds ◽  
Complex I ◽  
Charge Transfer Complexes ◽  
Asymmetric Unit ◽  
Pyromellitic Acid ◽  
Complex Iv ◽  
Complex Ii ◽  
Donor And Acceptor ◽  
Acceptor Molecules

Four binary charge-transfer complexes were made using pyromellitic acid dianhydride (pmda), those being pmda–naphthalene (1/1), C10H2O6·C10H8, (I), pmda–fluoranthene (1/1), C10H2O6·C16H10, (II), pmda–9-methylanthracene (1/1), C10H2O6·C15H12, (III), and pmda–ethyl anthracene-9-carboxylate (1/2), C10H2O6·2C17H12O3, (IV). All charge-transfer complexes show alternating donor and acceptor stacks, which have weak C—H...O hydrogen bonds connecting the donor and acceptor molecules. In addition, complex (I) has Z′ = 1/2, complex (II) has a Z′ = 2 and complex (IV) has half molecule of pyromellitic acid dianhydride in the asymmetric unit.

Helical mesoscopic crystals based on an achiral charge-transfer complex with controllable untwisting/breaking

2021 ◽  
Vol 57 (78) ◽  
pp. 10031-10034
Author(s):  
Canglei Yang ◽  
Lixing Luo ◽  
Jinqiu Chen ◽  
Bo Yang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Charge Transfer ◽  
Polar Solvent ◽  
Charge Transfer Complex ◽  
Donor And Acceptor ◽  
Induce Phase ◽  
Induce Phase Transition ◽  
Acceptor Molecules

The donor and acceptor molecules self-assemble into a helical morphology under the effect of polar solvent. By controlling the temperature to induce phase transition, the co-crystal undergoes predictable crystal breaking or untwisting.

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