Synthesis of possible<i>o</i>-thioquinone methide precursors
作者:Kirill A Kolmakov、A Jerry Kresge
DOI:10.1139/v07-142
日期:2008.2.1
conditions the reaction products can be isolated in excellent yields and with 100% purity, so the troublesome purification of temperature sensitive and volatile 2H-benzo[b]thietederivatives becomes unnecessary. The sulfur-containing compounds so obtained are efficient o-thioquinone methide precursors and possible synthones for heterocyclic chemistry.Key words: 2H-benzo[b]thietes, flash vacuum pyrolysis
An optical article containing a transmission medium exhibiting a high level of second order polarization susceptibility
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0313475A2
公开(公告)日:1989-04-26
An optical article is disclosed containing, for the transmission of electromagnetic radiation, a medium exhibiting a second order polarization susceptibility greater than 10⁻⁹ electrostatic units comprised of polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated π bonding system to an electron acceptor moiety to permit oscillation of the molecular dipole between a ground state exhibiting a first dipole moment and an excited state exhibiting a differing dipole moment. The molecular dipoles are held in polar alignment by a crosslinked polymeric binder.
An optical article containing a linear polymer exhibiting a high level of second order polarization susceptibility
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0313477A2
公开(公告)日:1989-04-26
An optical article is disclosed containing, for the transmission of electromagnetic radiation, a medium exhibiting a second order polarization susceptibility greater than 10-9 electrostatic units comprised of a linear polymer containing as pendant groups polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated π bonding system to an electron acceptor moiety to permit oscillation of the molecular dipole between a ground state exhibiting a first dipole moment and an excited state exhibiting a differing dipole moment. The linear polymer contains repeating units derived from vinyl addition polymerization, at least 5 percent of the repeating units incorporate the molecular dipoles as pendant groups, and the molecular dipoles include a sulfonyl electron acceptor moiety.
An optical article containing a linear condensation polymer exhibiting a high level of second order polarization susceptibility
申请人:EASTMAN KODAK COMPANY
公开号:EP0370922A2
公开(公告)日:1990-05-30
An optical article is disclosed containing, for the transmission of electromagnetic radiation, a medium exhibiting a second order polarization susceptibility greater than 10⁻⁹ electrostatic units comprised of a linear polymer containing polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated π bonding system to an electron acceptor moiety to permit oscillation of the molecular dipole between a ground state exhibiting a first dipole moment and an excited state exhibiting a differing dipole moment. The linear polymer is a condensation polymer including in its backbone a plurality of molecular dipoles including sulfonyl electron acceptor moieties sequentially arranged to reinforce electron displacement along the polymer backbone.