Synthesis and Optical Properties of Donor-Acceptor Tetrakis(phenylethynyl)benzenes
作者:Michael M. Haley、Jeremie J. Miller、Jeremiah A. Marsden
DOI:10.1055/s-2003-43372
日期:——
A simple and efficient synthesis of a series of donor-acceptor substituted 1,2,4,5-tetrakis(phenylethynyl)benzenes is described. The molecules constructed exhibit interesting opticalproperties. Preliminary studies show that the tetraynes hold promise as nonlinearoptical (NLO) materials.
作者:Dennis T.-Y. Bong、Eugene W. L. Chan、Rainer Diercks、Peter I. Dosa、Michael M. Haley、Adam J. Matzger、Ognjen Š. Miljanić、K. Peter C. Vollhardt、Andrew D. Bond、Simon J. Teat、Amnon Stanger
DOI:10.1021/ol049225v
日期:2004.6.1
[GRAPHICS]The parent and dipropyl-substituted anti (1a,b) and syn doublebent (2a,b) [5]phenylenes have been assembled by CpCo-catalyzed double cyclization of regiospecifically constructed appropriate hexaynes. H-1 NMR, NICS, and an X-ray structural analysis of is reflect the aromatizing effect of double angular fusion on the central ring of the linear [3]phenylene substructure.
Structure−Property Relationships of Donor/Acceptor-Functionalized Tetrakis(phenylethynyl)benzenes and Bis(dehydrobenzoannuleno)benzenes
作者:Jeremiah A. Marsden、Jeremie J. Miller、Laura D. Shirtcliff、Michael M. Haley
DOI:10.1021/ja044175a
日期:2005.3.1
A series of tetrakis(phenylethynyl)benzenes and bis(dehydrobenzoannuleno)benzenes have been synthesized containing tetra-substitutions of neutral, donor, and mixed donor/acceptor groups. To ascertain the importance of substitutional and structural differences of the phenylacetylenes, the optical absorption and emission properties of each series were examined. Conjugation effectiveness, electron density, planarity, and geometry of charge-transfer pathways were found to have a pronounced effect on the overall optical and material properties. Considerable self-association behavior due to face-to-face stacking in solution was observed for donor/acceptor-functionalized macrocycles and was quantified by concentration-dependent H-1 NMR measurements. A solvent-dependent polymerization of one macrocycle regioisomer was observed and characterized. To provide further insight into the energy levels and electronic transitions present, computational studies of each system were performed.