Substituent effects in solid-state assembly of activated benzotriazoles

CrystEngComm ◽  
2019 ◽  
Vol 21 (5) ◽  
pp. 835-842 ◽  
Author(s):  
Daniel S. Wenholz ◽  
Mohan Bhadbhade ◽  
Hakan Kandemir ◽  
Junming Ho ◽  
Naresh Kumar ◽  
...  
Keyword(s):  
Solid State ◽  
Broad Spectrum ◽  
Substituent Effects ◽  
Aromatic Donor ◽  
Donor Acceptor

Aromatic donor–acceptor stacking involving electron-rich π-donors and electron-deficient π-acceptors has been utilized in a broad spectrum of diverse applications to great effect.

Carbazole-modified thiazolo[3,2-c][1,3,5,2]oxadiazaborinines exhibiting aggregation-induced emission and mechanofluorochromism

2021 ◽  
Author(s):  
Mykhaylo A. Potopnyk ◽  
Mykola Kravets ◽  
Roman Luboradzki ◽  
Dmytro Volyniuk ◽  
Volodymyr Sashuk ◽  
...  
Keyword(s):  
Solid State ◽  
Fluorescence Properties ◽  
Aggregation Induced Emission ◽  
Donor Acceptor ◽  
Solid State Fluorescence ◽  
Active Donor

Two novel AIE-active donor–acceptor organoboron complexes with a carbazole donor unit are developed and their morphology-dependent solid-state fluorescence properties are established.

Homoleptic 2,2′-bipyridine metalates(–I) of iron and cobalt, one cocrystallized with an anthracene radical anion and the other with neutral anthracene

2014 ◽  
Vol 70 (8) ◽  
pp. 828-832
Author(s):  
William W. Brennessel ◽  
John E. Ellis
Keyword(s):  
Radical Anion ◽  
Complex Cation ◽  
Solvent Molecule ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
Aromatic Donor ◽  
Donor Acceptor ◽  
Anthracene Molecule ◽  
Packing Arrangement ◽  
Solvent Molecules

Homoleptic 2,2′-bipyridine (bipy) metalates of iron and cobalt have been synthesized directly from the corresponding homoleptic anthracene metalates. In the iron structure, bis[([2.2.2]cryptand)potassium(I)] tris(2,2′-bipyridine)ferrate(–I) anthracene(–I), [K(C18H36N2O6)]2[Fe(C10H8N2)3](C14H10), the asymmetric unit contains one potassium complex cation in a general position, the Fe center and one and a half bipy ligands of the ferrate complex on a crystallographic twofold axis that includes the Fe atom, and one half of an anthracene radical anion whose other half is generated by a crystallographic inversion center. The cations and anions are well separated and the geometry about the Fe center is essentially octahedral. In the cobalt structure, ([2.2.2]cryptand)potassium(I) bis(2,2′-bipyridine)cobaltate(–I) anthracene hemisolvate tetrahydrofuran (THF) disolvate, [K(C18H36N2O6)][Co(C10H8N2)2]·0.5C14H10·2C4H8O, the asymmetric unit contains the cation, anion, and both cocrystallized THF solvent molecules in general positions, and one half of a cocrystallized anthracene molecule whose other half is generated by a crystallographic inversion center. The cation and anion are well separated and the ligand planes in the cobaltate anion are periplanar. Each anthracene molecule is midway between and is oriented perpendicular to a pair of symmetry-related bipy ligands such that aromatic donor–acceptor interactions may play a role in the packing arrangement. The lengths of the bonds that connect the bipy rings support the assertion that the ligands are bipy radical anions in the iron structure. However, in the case of cobalt, these lengths are between the known ranges for a bipy radical anion and a bipy dianion, and therefore no conclusion can be made from the crystallography alone. One cocrystallized THF solvent molecule in the cobalt structure was modeled as disordered over three positions with appropriate geometric and thermal restraints, which resulted in a refined component mass ratio of 0.412 (4):0.387 (3):0.201 (3).

Raising the Bar in Aromatic Donor–Acceptor Interactions with Cyclic Trinuclear Gold(I) Complexes as Strong π-Donors

2018 ◽  
Vol 140 (51) ◽  
pp. 17932-17944 ◽  
Author(s):  
Raiko Hahn ◽  
Fabian Bohle ◽  
Wenwen Fang ◽  
Andreas Walther ◽  
Stefan Grimme ◽  
...  
Keyword(s):  
Aromatic Donor ◽  
Donor Acceptor

Aromatic donor–acceptor interaction promoted catalyst assemblies for hydrolytic kinetic resolution of epichlorohydrin

2019 ◽  
Vol 17 (1) ◽  
pp. 172-180 ◽  
Author(s):  
Daniel R. Blechschmidt ◽  
Matthew D. Woodhouse ◽  
Sebastien Inagaki ◽  
Melita Whitfield ◽  
Ayokunnumi Ogunsanya ◽  
...  
Keyword(s):  
Kinetic Resolution ◽  
Catalyst Activity ◽  
Acceptor Interaction ◽  
Hydrolytic Kinetic Resolution ◽  
Aromatic Donor ◽  
Donor Acceptor

The catalyst activity of bis-acceptor functionalized Co(iii)–salen in hydrolytic kinetic resolution can be fine-tuned by introducing a proper donor compound.

scholarly journals PAH/PAH(CF 3 ) n Donor/Acceptor Charge‐Transfer Complexes in Solution and in Solid‐State Co‐Crystals

2019 ◽  
Vol 25 (59) ◽  
pp. 13547-13565 ◽  
Author(s):  
Karlee P. Castro ◽  
Eric V. Bukovsky ◽  
Igor V. Kuvychko ◽  
Nicholas J. DeWeerd ◽  
Yu‐Sheng Chen ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Charge Transfer Complexes ◽  
Donor Acceptor

Photoresponsive triazole-based donor–acceptor molecules: color change and heat/air-stable diradicals

2019 ◽  
Vol 7 (10) ◽  
pp. 3100-3104 ◽  
Author(s):  
Ning-Ning Zhang ◽  
Rong-Jian Sa ◽  
Shan-Shan Sun ◽  
Ming-De Li ◽  
Ming-Sheng Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Charge Separation ◽  
Color Change ◽  
Heat Stable ◽  
Donor Acceptor ◽  
Acceptor Molecules

An unprecedented series of triazole-based donor–acceptor molecules were found to form highly air/heat-stable triplet diradicals in the solid state accompanied by a color change after photoinduced intramolecular charge separation.

Syntheses and structures of two novel fluorescent metal–organic frameworks generated from a tridentate donor–acceptor motif ligand

2020 ◽  
Vol 76 (6) ◽  
pp. 605-615
Author(s):  
Yong-Jin Zhao ◽  
Jian-Ping Ma ◽  
Jianzhong Fan ◽  
Yan Geng ◽  
Yu-Bin Dong
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Weak Interactions ◽  
Metal Organic Frameworks ◽  
3D Structure ◽  
Organic Ligand ◽  
Bidentate Ligand ◽  
Donor Acceptor ◽  
Metal Organic ◽  
3D Networks

The tridentate organic ligand 4,4′,4′′-(4,4,8,8,12,12-hexamethyl-8,12-dihydro-4H-benzo[9,1]quinolizino[3,4,5,6,7-defg]acridine-2,6,10-triyl)tribenzoic acid (H3L) has been synthesized (as the methanol 1.25-solvate, C48H39NO6·1.25CH3OH). As a donor–acceptor motif molecule, H3L possess strong intramolecular charge transfer (ICT) fluorescence. Through hydrogen bonds, H3L molecules construct a two-dimensional (2D) network, which pack together into three-dimensional (3D) networks with an ABC stacking pattern in the crystalline state. Based on H3L and M(NO3)2 salts (M = Cd and Zn) under solvothermal conditions, two metal–organic frameworks (MOFs), namely, catena-poly[[triaquacadmium(II)]-μ-10-(4-carboxyphenyl)-4,4′-(4,4,8,8,12,12-hexamethyl-8,12-dihydro-4H-benzo[9,1]quinolizino[3,4,5,6,7-defg]acridine-2,6-diyl)dibenzoato], [Cd(C48H37NO6)(H2O)3] n , I, and poly[[μ3-4,4′,4′′-(4,4,8,8,12,12-hexamethyl-8,12-dihydro-4H-benzo[9,1]quinolizino[3,4,5,6,7-defg]acridine-2,6,10-triyl)tribenzoato](μ3-hydroxido)zinc(II)], [Zn2(C48H36NO6)(OH)] n , II, were synthesized. Single-crystal analysis revealed that both MOFs adopt a 3D structure. In I, partly deprotonated HL 2− behaves as a bidentate ligand to link a CdII ion to form a one-dimensional chain. In the solid state of I, the existence of weak interactions, such as O—H...O hydrogen bonds and π–π interactions, plays an essential role in aligning 2D nets and 3D networks with AB packing patterns for I. The deprotonated ligand L 3− in II is utilized as a tridentate building block to bind ZnII ions to construct 3D networks, where unusual Zn4O14 clusters act as connection nodes. As a donor–acceptor molecule, H3L exhibits fluorescence with a photoluminescence quantum yield (PLQY) of 70% in the solid state. In comparison, the PL of both MOFs is red-shifted with even higher PLQYs of 79 and 85% for I and II, respectively.

scholarly journals Bright Solid-State Emission of Disilane-Bridged Donor-Acceptor-Donor and Acceptor-Donor-Acceptor Chromophores

2016 ◽  
Vol 55 (9) ◽  
pp. 3022-3026 ◽  
Author(s):  
Masaki Shimada ◽  
Mizuho Tsuchiya ◽  
Ryota Sakamoto ◽  
Yoshinori Yamanoi ◽  
Eiji Nishibori ◽  
...  
Keyword(s):  
Solid State ◽  
Donor And Acceptor ◽  
Donor Acceptor
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