Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Satya S. Talwar"'
Autor:
Shuji Okada, Hiro Matsuda, Satya S. Talwar, Tatsumi Kimura, Hitoshi Kasai, Tiesheng Li, Hachiro Nakanishi, Hirohito Umezawa
Publikováno v:
Polymer Bulletin. 57:737-746
1,4-Bis(3-quinolyl)-1,3-butadiyne (DQ) is known to be polymerized in solid state to give the corresponding polydiacetylene. However, the polymer yield of DQ bulk crystals is low. Thus, we prepared several types of DQ crystals by different procedures
Autor:
Satya S. Talwar, Abhijit Sarkar
Publikováno v:
Bulletin of the Chemical Society of Japan. 72:859-864
Diynes with heteroaromatic sidegroups directly linked to the acetylenic backbone were found to show liquid crystalline behaviour upon heating. Thus, 1,4-di(2-thienyl)-1,3-butadiyne, 1,4-di(3-thienyl)-1,3-butadiyne, 1,4-di(3-benzo[b]thienyl)-1,3-butad
Publikováno v:
Polymer Bulletin. 42:69-76
Two symmetrical diacetylene monomers containing thienyl moiety as the side groups, namely 1,4-bis(2'-thienyl)butadiyne and 1,4-bis(3'-thienyl)butadiyne, are reported which have been successfully polymerised electrochemically. They have also been poly
Autor:
Abhijit Sarkar, Satya S. Talwar
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :4141-4146
Diacetylenes are known to undergo solid-state topochemical polymerisation to give polydiacetylenes. The reactivity of the monomer is controlled by the arrangement of the molecules in the crystal lattice wherein certain parametric conditions must be m
Publikováno v:
Macromolecules. 27:6612-6619
Solutions of poly(1,4-bis(3-quinolyl)buta-1,3-diyne) (PDQ) have shown the lowest energy electronic transitions of all the reported poly(diacetylene)s. Unusual solvato- and thermochromic behavior of PDQ in various polar and nonpolar environments is di
Publikováno v:
ChemInform. 22
C 22 H 12 N 2 cristallise dans P2 1 /c avec a=4,807, b=13,687, c=11,909 A, β=95,34°, Z=2; affinement jusqu'a R=0,0636. La structure du monomere satisfait aux conditions de polymerisation topochimique avec D=3,603, S 1 =3,450 A et γ 1 =47,5°
Autor:
K. Rajalakshmi, K. N. Babu, Satya S. Talwar, Abhijit Sarkar, Lalita P. Bhagwat, M. B. Kamath, P. Sekher
Publikováno v:
ChemInform. 22
Autor:
Abhijit Sarkar, Satya S. Talwar
Publikováno v:
ChemInform. 30
Autor:
Abhijit Sarkar, Satya S. Talwar
Publikováno v:
ChemInform. 30
Diynes with heteroaromatic sidegroups directly linked to the acetylenic backbone were found to show liquid crystalline behaviour upon heating. Thus, 1,4-di(2-thienyl)-1,3-butadiyne, 1,4-di(3-thienyl)-1,3-butadiyne, 1,4-di(3-benzo[b]thienyl)-1,3-butad
Publikováno v:
IndraStra Global.
Topochemical reactivity of some conjugated diacetylenes with pi-conjugating substituents upon exposure to gamma-radiation, UV-visible radiation and upon thermal annealing is described. Few of the diacetylenes undergo solid state polymerization to pro