21792-52-9Relevant articles and documents
Gelation or crystallization? Subtle balance of structural factors for assembly of DBA derivatives with methyl esters
Hisaki, Ichiro,Kometani, Eriko,Tohnai, Norimitsu,Miyata, Mikiji
, p. 8079 - 8084 (2015)
Morphology of molecular aggregates is crucially affected by molecular shape and intermolecular interactions. In 2009, we reported the unusual gelation behaviour of a curved-butadiynyl-bridged cyclic pi-conjugated molecule, octadehydrodibenzo[12]annulene ([12]DBA), possessing two methyl ester groups in noncentrosymmetric positions. Aggregation of the [12]DBA derivative occurred anisotropically to give crystalline nanofibers, which finally formed an organogel. To investigate the aggregation behaviour of the related analogues, we synthesized octadehydrotribenzo[14]annulene ([14]DBA) derivatives with two and four methyl ester groups and revealed that the [14]DBAs gave not gels but crystals, in which the molecules are stacked not in a unidirectional manner but in an alternating way. The results indicate that the gelation and crystallization of the present molecular system is derived from the subtle balance of molecular shape and intermolecular interactions.
Comparison of "Polynaphthalenes" Prepared by Two Mechanistically Distinct Routes
Johnson, James P.,Bringley, Dustin A.,Wilson, Erin E.,Lewis, Kevin D.,Beck, Larry W.,Matzger, Adam J.
, p. 14708 - 14709 (2003)
The Bergman cyclization has long been known to produce polymers as side products. More recently, this attribute has been harnessed for the production of conjugated materials. However, the structures of these polymers have not been established. To resolve
Benzocyclobutabiphenylene, the First Member of a Novel Series of Linear Cyclobutadienoid Acenes
Berris, Bruce C.,Hovakeemian, George H.,Vollhardt, K. Peter C.
, p. 502 - 503 (1983)
Palladium mediated ethynylation of iodoarenes coupled with cobalt catalysed alkyne cotrimerisations allows rapid access to benzocyclobutabiphenylene, a linear biphenylenoid, and two of its trimethylsilyl derivatives.
Acetylene-substituted phosphane oxides: Building blocks for macrocycles
Van Assema, Sander G. A.,De Jong, G. Bas,Ehlers, Andreas W.,De Kanter, Frans J. J.,Schakel, Marius,Spek, Anthony L.,Lutz, Martin,Lammertsma, Koop
, p. 2405 - 2412 (2007)
Phosphorus-based macrocycles with acetylenic scaffolds have been built from acetylene-substituted phosphane oxides that were formed from diisopropylphosphoramidic dibromide (3) and an acetylenic Grignard reagent. The four-and six-edged macrocycles 15 and
A new halogen bonding 1,2-iodo-triazolium-triazole benzene motif for anion recognition
Beer, Paul D.,Bunchuay, Thanthapatra,Docker, Andrew,White, Nicholas G.
, (2021/09/28)
The synthesis of a series of halogen bonding (XB) acyclic anion receptors based on a novel 1,2-iodo-triazolium-triazole benzene motif is reported. A combination of one- and two-dimensional 1H and 19F NMR spectroscopic techniques eluc
Chiral double stapled: O -OPEs with intense circularly polarized luminescence
Reine, Pablo,Campa?a, Araceli G.,Alvarez De Cienfuegos, Luis,Blanco, Victor,Abbate, Sergio,Mota, Antonio J.,Longhi, Giovanna,Miguel, Delia,Cuerva, Juan M.
, p. 10685 - 10688 (2019/09/13)
Intrinsically chiral double stapled ortho-oligo phenylene ethynylenes (o-OPEs) 1 show glum values up to 5.5 × 10-2, the second highest value ever observed for a simple organic molecule (SOM). DFT calculations of molecular spectra and
