Alkyl-substituted spiropyrans: electronic effects, model compounds and synthesis of aliphatic main-chain copolymers

2017 ◽  
Vol 8 (35) ◽  
pp. 5407-5414 ◽  
Author(s):  
Simon B. Schmidt ◽  
Fabian Kempe ◽  
Oliver Brügner ◽  
Michael Walter ◽  
Michael Sommer
Keyword(s):  
Main Chain ◽  
Electronic Effects ◽  
Model Compounds

This work reports on the isomerisation behaviour of alkylated spiropyrans and aliphatic main chain spiropyran copolymers.

Synthesis and fluorescent properties of model compounds for conjugated polymer containing maleimide units at the main chain

2011 ◽  
Vol 49 (16) ◽  
pp. 3550-3558 ◽  
Author(s):  
Kenjiro Onimura ◽  
Mieko Matsushima ◽  
Munetoshi Nakamura ◽  
Tatsuya Tominaga ◽  
Kazuhiro Yamabuki ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Main Chain ◽  
Fluorescent Properties ◽  
Model Compounds

Preparation and Property of Model Homogeneous ER Fluids Having Urethane Groups

1999 ◽  
Vol 13 (14n16) ◽  
pp. 1998-2004 ◽  
Author(s):  
Keiji Minagawa ◽  
Hirokazu Okamura ◽  
Seizo Masuda ◽  
Masami Tanaka ◽  
Naoto Gohko ◽  
...  
Keyword(s):  
Chemical Structure ◽  
Hard Segment ◽  
Main Chain ◽  
Model Compounds ◽  
Soft Segments ◽  
Er Fluids ◽  
Branched Structure

Urethane modified polyether liquids composed of hard and soft segments exhibit either positive or negative ER effect depending on the structure. Here some model compounds of the urethane polymers were synthesized, and the influence of chemical structure, e.g. displacement of hard and soft segments and existence of branches, on the ER effect was studied. It was found that negative ER effect is enhanced by introducing a branched structure in the polyether main-chain or a hard segment at center of the linear polyether.

Model Compounds of Main-Chain Thermotropic Nematic Polyesters

1985 ◽  
Vol 129 (4) ◽  
pp. 375-407 ◽  
Author(s):  
R. B. Blumstein ◽  
M. D. Poliks ◽  
E. M. Stickles ◽  
A. Blumstein ◽  
F. Volino
Keyword(s):  
Main Chain ◽  
Model Compounds
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