scholarly journals Preservation of the donor–acceptor character of a carbazole–phenalenone dyad upon adsorption on Pt(111)

2021 ◽  
Author(s):  
René Ebeling ◽  
Narendra P. Arasu ◽  
Lisa Bensch ◽  
Bertram Schulze Lammers ◽  
Bernhard Mayer ◽  
...  
Keyword(s):  
Acceptor Molecule ◽  
Donor Acceptor

The donor–acceptor character of a donor–bridge–acceptor molecule is traced along the complexation with a Pt adatom and adsorption on a Pt(111) substrate. The non-planarity enables the partial preservation of the donor–acceptor character.

Fused donor–acceptor π-conjugated diazatruxenones: synthesis and electronic properties

2018 ◽  
Vol 5 (11) ◽  
pp. 1748-1755 ◽  
Author(s):  
Angela Benito-Hernández ◽  
Mardia T. El-Sayed ◽  
Juan T. López Navarrete ◽  
M. Carmen Ruiz Delgado ◽  
Berta Gómez-Lor
Keyword(s):  
Charge Transport ◽  
Electronic Properties ◽  
Acceptor Molecule ◽  
Promising Candidate ◽  
Donor Acceptor

A promising candidate for ambipolar charge transport: a disk-like platform, diazatruxenone, as a novel, compact and planar donor–acceptor molecule.

Femtosecond Transient Grating Studies of Chlorophylls and a Chlorophyll-Based Electron Donor-Acceptor Molecule

1995 ◽  
Vol 99 (21) ◽  
pp. 8918-8926 ◽  
Author(s):  
Gary P. Wiederrecht ◽  
Walter A. Svec ◽  
Mark P. Niemczyk ◽  
Michael R. Wasielewski
Keyword(s):  
Electron Donor ◽  
Acceptor Molecule ◽  
Transient Grating ◽  
Donor Acceptor

Donor-Akzeptor-Komplexe von Halogenidionen mit 1.4-Diiodtetrafluorbenzol/Donor-Acceptor Complexes of Halide Ions with 1,4-Diiodotetrafluorobenzene

1999 ◽  
Vol 54 (1) ◽  
pp. 77-86 ◽  
Author(s):  
Jutta Grebe ◽  
Gertraud Geiseler ◽  
Klaus Harms ◽  
Kurt Dehnicke
Keyword(s):  
Three Dimensional ◽  
Crystallographic Structure ◽  
Acceptor Molecule ◽  
Halide Ions ◽  
Space Group ◽  
X Ray ◽  
Bond Angles ◽  
Structure Determinations ◽  
Donor Acceptor

(Ph4P)X as well as (Me4N)X (X = Cl, Br, I) react with 1,4-diiodotetrafluorobenzene in CH2C12 and CH3CN solutions, respectively, to give the donoracceptor complexes (Ph4PM (C6F4I2)Cl2]·4 CH2Cl2 (1), (Ph4P)2[(C6F4I2)Br2]·2 CH2Cl2 (2), (Me4N)[(C6F4I2)Cl] (3), (Me4N)[(C6F4I2)Br]·CH3CN (4), (Ph4P)2[(C6F4I2)3Br2]·4CH2Cl2 (5), (Ph4P)2[(C6F4I2)3I2] (6) and (Me4N)2[(C6F4I2)3I2] (7). All complexes have been characterized by single X-ray crystallographic structure determinations. 1: Space group P1̄, Z = 1, lattice dimensions at 203 K: a = 1090.2(1), b = 1206.2(1), c = 1242.8(1) pm, α = 91,84(1)°, β = 106.60(1)°, γ = 99.84(1)°.2: Space group P1̄, Z = 1, lattice dimensions at 233 K: a = 1129.7(2), b = 1183.9(1), c = 1293.4(1) pm, α = 65.52(1)°, β = 65.74(1)°, γ = 89.02(1)°.3: Space group P21/n, Z = 4, lattice dimensions at 243 K: a = 714.8(1), b = 2405.7(3), c = 930.8(1) pm, β = 96.38(1)°.4: Space group P21/c, Z = 4, lattice dimensions at 203 K: a = 1400.8(1), b = 1669.9(2), c = 795.9(1) pm, β = 102.81(1)°.5: Space group Pbca, Z = 4, lattice dimensions at 223 K: a = 2106.0(4), b = 1566.8(3), c = 2445.8(4) pm.6 : Space group P1̄, Z = 1, lattice dimensions at 203 K: a = 1150.9(1), b = 1278.9(1), c = 1292.9(2) pm, α = 65.47(1)°, β = 82.07(1)°, γ = 83.62(1)°.7: Space group Pbca, Z = 4, lattice dimensions at 223 K: a = 1210.5(5), b = 1429.0(6), c = 2470.3(12) pm.In all complexes the acceptor molecule C6F4I2 coordinates with the halide donor ions in linear arrangements C-I· · ·X- . In 1 and 2 the halide ions act as terminal donors to form the dianionic species [X· · ·I-C6F4-I· · ·X]2- (X = Cl, Br). Complexes 3 and 4 form polymeric anionic zigzag chains with μ-X- bridges and bond angles I· · ·Cl· · ·I of 77.2° and I· · ·Br· · ·I of 74.3°. Complexes 5 - 7 are characterized by three-dimensional anionic networks via /x3-X- bridging halide ions and μ-bridging 1,4-diiodotetrafluorobenzene molecules.

A novel donor–acceptor molecule containing a cyclic triphenylamine dimer: synthesis, characterization, and application in memory device

Tetrahedron ◽  
2012 ◽  
Vol 68 (5) ◽  
pp. 1547-1551 ◽  
Author(s):  
Yun Zhao ◽  
Changqing Ye ◽  
Yali Qiao ◽  
Wei Xu ◽  
Yanlin Song ◽  
...  
Keyword(s):  
Memory Device ◽  
Acceptor Molecule ◽  
Donor Acceptor

Wechselwirkungen in Molekülkristallen, 179 [1, 2]. σ-Donator/Akzeptor-Komplexe {I2C=CI2···X⊖ } (X⊖ = Cl⊖ , Br⊖ , I⊖ , SCN⊖ ) von Tetraiodethen in Tetra(n-butyl)ammoniumhalogenid-Salzen / Interaction in Molecular Crystals, 179 [1, 2]. σ-Donor/Acceptor Complexes {I2C=CI2···X⊖} (X⊖= Cl⊖, Br⊖, I⊖, SCN⊖) of Tetraiodoethene in Tetra(n-butyl)ammonium Halide Salts

2002 ◽  
Vol 57 (7) ◽  
pp. 713-725 ◽  
Author(s):  
Hans Bock ◽  
Sven Holl
Keyword(s):  
Low Temperature ◽  
Self Assembly ◽  
Molecular Crystals ◽  
Database Search ◽  
Acceptor Molecule ◽  
Halide Anion ◽  
Structure Comparison ◽  
Donor Acceptor ◽  
Structural Database ◽  
Halide Salts

Four donor/acceptor complexes between halide anion donors and the tetraiodoethene acceptor molecule with tetra(n-butyl)ammoniumcountercations, {(H9C4)4N⊕X⊖···I2C=CI2)} (X⊖ = Cl⊖, Br⊖, I⊖, SCN⊖) could be crystallized from acetone solutions of the components R4N⊕X⊖ and I2C=CI2 by using low gradient techniques, and their structures determined at low temperature. Their molecule packing motif are layers of halide anion/tetraiodoethene patterns, which are penetrated by one of the four R4N⊕ n-butyl chains. The structure comparison, including analogous ones from an extensive Cambridge Structural Database search, discusses the geminal or vicinal addition to dimer subunits {X⊖···I2C=CI2}2 as well as their ribbon formation via additional contacts X⊖···I, and the effects of the voluminous R4N⊕ countercations. Altogether some light is shedded on essential facets of the fascinating self-assembly comprising an electron-rich halide anion and a polyiodo acceptor molecule.

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