Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Ivan Schopov"'
Publikováno v:
Polymer Bulletin. 46:345-349
A new methacrylate monomer containing anthracene moiety connected with long flexible spacer was prepared and copolymerized with n-butyl methacrylate. It has been found that upon illumination in inert atmosphere photodimerization of the anthracene rin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d1370bbd43a4e6d1e4e04c380aaecc9
https://doi.org/10.1007/s002890170041
https://doi.org/10.1007/s002890170041
Publikováno v:
Macromolecular Chemistry and Physics. 201:1134-1140
Four poly(oxymethyleneanthrylene)s were prepared by polycondensation of 9,10-diacetoxyanthracene (and a substituted analogue) with α,ω-dibromoalkanes. Two model compounds were also synthesized by the same procedure. Although non-conjugated the poly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7894adaaa941a42253f07908fd0e6dd0
https://doi.org/10.1002/1521-3935(20000701)201:11<1134::aid-macp1134>3.0.co
https://doi.org/10.1002/1521-3935(20000701)201:11<1134::aid-macp1134>3.0.co
Publikováno v:
Macromolecular Chemistry and Physics. 198:919-925
Doping with iodine of the liquid crystalline polymer [OPhCH=NPhN=CHPhO(CH 2 ) 3 SiMe 2 OSiMe 2 OSiMe 2 (CH 2 ) 3 ] n in its different states was investigated for the first time. It was established that the polymer cannot be doped in solution, but it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::820df51307ee4ffda4475742058dc702
https://doi.org/10.1002/macp.1997.021980401
https://doi.org/10.1002/macp.1997.021980401
Publikováno v:
Macromolecular Chemistry and Physics. 197:1713-1720
In order to elucidate the dependence of electrical conductivity on conjugation length, polyketones built up of short conjugated aromatic blocks and methylene chains of different length were studied. As obtained, the polymer exhibit very low electrica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc466d73127d862293541530bba8e2c7
https://doi.org/10.1002/macp.1996.021970512
https://doi.org/10.1002/macp.1996.021970512
Publikováno v:
European Polymer Journal. 29:617-620
A new polymer, poly(1,3,4-oxadiazole-2,5-diyl-ethenyl-1,4-phenylene), was obtained from p -phenylenediacrylic acid and hydrazine sulphate in methanesulphonic acid containing P 2 O 5 . The all- trans configuration of the double bonds and the chemical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::792baccc135012461432b91c3ee2d499
https://doi.org/10.1016/0014-3057(93)90027-d
https://doi.org/10.1016/0014-3057(93)90027-d
Autor:
Ivan Schopov, Lyudmila Mladenova
Publikováno v:
Synthetic Metals. 48:249-258
Two new polymers with methylene bridged rans-cisoid polyene chains are prepared by the carbonyl-olefin exchange reaction. Since the single bonds of the chain are included in the rings, any free rotation along them is prevented and therefore the conju
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc77277265f732c1720aa9d417cc1952
https://doi.org/10.1016/0379-6779(92)90228-b
https://doi.org/10.1016/0379-6779(92)90228-b
Publikováno v:
Advanced Materials. 12:1058-1060
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2b4abc3502645535a9e9f28ede3dcbe
https://doi.org/10.1002/1521-4095(200007)12:14<1058::aid-adma1058>3.0.co
https://doi.org/10.1002/1521-4095(200007)12:14<1058::aid-adma1058>3.0.co
Autor:
Christo Jossifov, Ivan Schopov
Publikováno v:
Die Makromolekulare Chemie. 192:857-861
The influence of experimental conditions and the nature of the catalytic system on the yield of products insoluble in methanol from the carbonyl-olefin exchange reaction (COER) was investigated. It was established that the COER of some α, β-unsatur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99402fe352420092a709a69effc264c5
https://doi.org/10.1002/macp.1991.021920410
https://doi.org/10.1002/macp.1991.021920410
Autor:
Ivan Schopov, Christo Jossifov
Publikováno v:
Die Makromolekulare Chemie. 192:863-866
The processes which take place with the α,β-unsaturated compound 1,2,3,3-tetraphenyl-2-propen-1-one (1) under the influence of WCl6 were investigated. Special attention was paid to the low-molecular-weight products. It was established that beside p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::469e35877d367e66da4acae0043e8d6b
https://doi.org/10.1002/macp.1991.021920411
https://doi.org/10.1002/macp.1991.021920411
Publikováno v:
Polymer. 35:1549-1551
A polymer containing photochromic moieties is obtained by means of the transesterification of poly(vinyl acetate) with 2-phenyl-5-carboxy-1,3-indandione. Upon u.v. irradiation of a solution and film of this polymer a transition to its benzalphthalide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ff372e0d576444be6ea54b72541ed22
https://doi.org/10.1016/0032-3861(94)90357-3
https://doi.org/10.1016/0032-3861(94)90357-3