| Attributes | Values |
|---|
| rdf:type
| |
| Description
| - 3-Ethynylthiofene (3ETh) byl polymerizován s Rh(I)komplexy: [Rh(cod)acac], [Rh(nbd)acac], [Rh(cod)Cl]2 a [Rh(nbd)Cl]2 (cod je .eta.2:.eta.2-cycloocta-1,5-diene a nbd je .eta.2:.eta.2-norborna-2,5-diene) použitými jako homogenní katalyzátory a s kompexy [Rh(cod)Cl]2 a [Rh(nbd)Cl]2 imobilizovanými na mezoporézním polybenzimidazolu použitými jako heterogenní katalyzátory. Všechny testované katalyzátory poskytly poly(3ETh) s vysokým obsahem cis dvojných vazeb. In situ NMR studium homogenních polymerizací iniciovaných [Rh(cod)acac] a [Rh(nbd)acac] komplexy ukázalo: (i) že transformace acac ligandů na volný acetylaceton (Hacac) nastává již v počátečním stadiu polymerizace, což naznačuje, že tato reakce je součástí iniciace, (ii) že iniciace je pomalá v obou polymerizačních systémech a (iii) že v průběhu polymerizace dochází k uvolnění cod ligandu z [Rh(cod)acac] ale nikoli nbd ligandu z [Rh(nbd)acac]. (cs)
- Conjugated polymers attract a particular attention as functional materials for electronics, photonics, and related applications as well as for gas separation and pervaporation membranes.[1-5] These polymers are usually prepared by coordination polymerization of corresponding alkynes induced with homogeneous catalysts. The increased requirements for a high purity of these polymers, especially for a low level of catalyst residues, initiated the investigation of heterogeneous catalysts, the application of which enables easy and complete separation of produced polymers from catalysts.[6] Rh complexes immobilized on polymeric supports[7][8] and/or mesoporous molecular sieves[9][10] have been successfully used for polymerization of phenylacetylene and its derivatives into polymers of high purity. These catalysts failed, however, in polymerization of aliphatic alkynes.
- Conjugated polymers attract a particular attention as functional materials for electronics, photonics, and related applications as well as for gas separation and pervaporation membranes.[1-5] These polymers are usually prepared by coordination polymerization of corresponding alkynes induced with homogeneous catalysts. The increased requirements for a high purity of these polymers, especially for a low level of catalyst residues, initiated the investigation of heterogeneous catalysts, the application of which enables easy and complete separation of produced polymers from catalysts.[6] Rh complexes immobilized on polymeric supports[7][8] and/or mesoporous molecular sieves[9][10] have been successfully used for polymerization of phenylacetylene and its derivatives into polymers of high purity. These catalysts failed, however, in polymerization of aliphatic alkynes. (en)
|
| Title
| - Polymerization of aliphatic alkynes with heterogeneous Mo catalysts supported on mesoporous molecular sieves
- Polymerization of aliphatic alkynes with heterogeneous Mo catalysts supported on mesoporous molecular sieves (en)
- Polymerizace alifatických alkinů s heterogenními Mo katalyzátory nanesenými na mezoporézních molekulových sítech (cs)
|
| skos:prefLabel
| - Polymerization of aliphatic alkynes with heterogeneous Mo catalysts supported on mesoporous molecular sieves
- Polymerization of aliphatic alkynes with heterogeneous Mo catalysts supported on mesoporous molecular sieves (en)
- Polymerizace alifatických alkinů s heterogenními Mo katalyzátory nanesenými na mezoporézních molekulových sítech (cs)
|
| skos:notation
| - RIV/61388955:_____/08:00309686!RIV09-AV0-61388955
|
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(GA203/05/2194), P(IAA4040411), P(KAN100400701), Z(AV0Z40400503), Z(MSM0021620857)
|
| http://linked.open...iv/cisloPeriodika
| |
| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
| |
| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/08:00309686
|
| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - alkyne polymerization; conjugated polymers; metathesis; Mo heterogeneous catalysts (en)
|
| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
|
| http://linked.open...ontrolniKodProRIV
| |
| http://linked.open...i/riv/nazevZdroje
| - Journal of Polymer Science. Part A - Polymer Chemistry
|
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Topka, Pavel
- Čejka, Jiří
- Sedláček, J.
- Balcar, Hynek
- Zedník, J.
|
| http://linked.open...ain/vavai/riv/wos
| |
| http://linked.open...n/vavai/riv/zamer
| |
| issn
| |
| number of pages
| |
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