scholarly journals Radical anion formation exhibiting “turn-on” fluorescence sensing of hydrazine using a naphthalene diimide (NDI) derivative with a donor–acceptor–donor (D–A–D) molecular structure

2020 ◽  
Vol 19 (11) ◽  
pp. 1603-1612
Author(s):  
P. Lasitha
Keyword(s):  
Molecular Structure ◽  
Self Assembly ◽  
Radical Anion ◽  
Fluorescence Sensing ◽  
Anion Formation ◽  
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Naphthalene Diimide ◽  
Donor Acceptor

A naphthelene diimide (NDI) derivative of donor–acepter–donor (D–A–D) molecular structure follows a isodesmic mode of self-assembly and shows “turn-on” fluorescence sensing of hydrazine.

scholarly journals Cooperative supramolecular polymerization of an amine-substituted naphthalene-diimide and its impact on excited state photophysical properties

2016 ◽  
Vol 7 (2) ◽  
pp. 1115-1120 ◽  
Author(s):  
Haridas Kar ◽  
Dominik W. Gehrig ◽  
Naveen Kumar Allampally ◽  
Gustavo Fernández ◽  
Frédéric Laquai ◽  
...  
Keyword(s):  
Excited State ◽  
Self Assembly ◽  
Photophysical Properties ◽  
Naphthalene Diimide ◽  
Donor Acceptor ◽  
Supramolecular Polymerization

A donor–acceptor–donor (D–A–D) type naphthalene-diimide (NDI-H) chromophore exhibits highly cooperative J-aggregation leading to nanotubular self-assembly and gelation in n-decane.

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).

Self-Assembly of a Donor–Acceptor Nanotube. A Strategy To Create Bicontinuous Arrays

2011 ◽  
Vol 133 (47) ◽  
pp. 19125-19130 ◽  
Author(s):  
Siyu Tu ◽  
Se Hye Kim ◽  
Jojo Joseph ◽  
David A. Modarelli ◽  
Jon R. Parquette
Keyword(s):  
Self Assembly ◽  
Donor Acceptor

Proteolytic disassembly of peptide-mediated graphene oxide assemblies for turn-on fluorescence sensing of proteases

Nanoscale ◽  
2016 ◽  
Vol 8 (24) ◽  
pp. 12272-12281 ◽  
Author(s):  
Jin-Kyoung Yang ◽  
Seon-Yeong Kwak ◽  
Su-Ji Jeon ◽  
Eunjin Lee ◽  
Jong-Min Ju ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fluorescence Sensing ◽  
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