Design, Synthesis, and Properties of New Derivatives of Pentacene
摘要:
Stable, soluble ethynylated derivatives of pentacene (9a-c) were synthesized, and the ethynyl moieties on the terminal rings were used to tune the electronic properties of these compounds. Their oxidation potentials are higher and their reduction potentials are lower than those of pentacene. The HOMO-LUMO gaps are among the lowest reported for pentacene derivatives.
Chloroboron(III) hexachloro- and hexaiodosubnaphthalocyanines were prepared, and their solubility, electronic absorption spectroscopy, fluorescence emission spectroscopy and HOMO/LUMO energy levels were evaluated. These subnaphthalocyanines showed lower HOMO/LUMO energies than the parent subnaphthalocyanine by 0.13-0.39 eV. The optical band gap decreased in the order: hexafluoro>hexachloro->unsubstituted>hexaiodo-subnaphthalocyanine. Fluorescence quantum yield of hexaiodosubnaphthalocyanine was 0.05, significantly lower than those of the parent, hexafluoro- and hexachloro-subnaphthalocyanines whose quantum yields ranged from 0.2 to 0.22, indicating that the heavy atom effects of iodine work effectively. (C) 2016 Elsevier Ltd. All rights reserved.
Gaux,B.; le Henaff,P., Bulletin de la Societe Chimique de France, 1974, p. 505 - 509
作者:Gaux,B.、le Henaff,P.
DOI:——
日期:——
Design, Synthesis, and Properties of New Derivatives of Pentacene
作者:Jinyue Jiang、Bilal R. Kaafarani、Douglas C. Neckers
DOI:10.1021/jo0522198
日期:2006.3.1
Stable, soluble ethynylated derivatives of pentacene (9a-c) were synthesized, and the ethynyl moieties on the terminal rings were used to tune the electronic properties of these compounds. Their oxidation potentials are higher and their reduction potentials are lower than those of pentacene. The HOMO-LUMO gaps are among the lowest reported for pentacene derivatives.
Control of the molecular packing of chloroboron(<scp>iii</scp>) and fluoroboron(<scp>iii</scp>) subnaphthalocyanines by designing peripheral substituents
作者:Akuto Takagi、Tadashi Mizutani
DOI:10.1039/c7ra11104e
日期:——
Chloroboron(III) and fluoroboron(III) hexa(1-alkynyl)- and hexa(2-arylethynyl)subnaphthalocyanines with a large dipole moment were prepared by Sonogashira coupling of hexaiodosubnaphthalocyanines with substituted acetylenes. Introduction of butyl or longer alkyl groups via ethynylene linkages on the periphery resulted in lower melting points and higher solubility in dichloromethane. X-ray diffraction (XRD) patterns