Unsaturated Polyphosphoesters via Acyclic Diene Metathesis Polymerization
摘要:
A powerful methodology for the synthesis of unsaturated polyphosphoesters (UPPEs) relying on acyclic diene metathesis (ADMET) polymerization is described. A facile two-step protocol gives fast access to structurally versatile and potentially degradable and biocompatible materials. For the first time this allows to control the microstructure of either backbone and/or side chains of polyphosphoesters. Four different, monomers are polymerized under different conditions to yield UPPEs with molecular weights ranging from 7000 up to 50 000 g.mol(-1) with reasonable polydispersity. The unsaturated and saturated polyphosphoesters are characterized in detail with various techniques. A major benefit of the UPPEs is revealed by differential scanning calorimetry proving the control over thermal properties with tunable melting or glass transition temperatures for the different saturated and unsaturated PPEs which is an important feature for future applications. This unique combination of the benefits of metathesis polymerization and phosphorus chemistry is a highly versatile system for materials in many applications ranging from adhesives to biomaterials.
Long-term stable photoactive composition, such as phosphorescent composition or TTA-photon upconversion composition
申请人:Max-Planck-Gesellschaft zur Förderung
der Wissenschaften e.V.
公开号:EP2851407A1
公开(公告)日:2015-03-25
A long-term stable photoactive composition, such as a phosphorescent composition or a TTA-photon upconversion composition, contains at least one compound, which has a triplet state capable of energy transfer via an emissive process or a non-emissive process, and at least one compound capable of reacting with singlet oxygen, wherein the at least one compound capable of reacting with singlet oxygen comprises at least one terminal unsaturated carbon-carbon bond, and wherein the at least one compound capable of reacting with singlet oxygen is contained in the composition in such an amount that the number of terminal unsaturated carbon-carbon bonds is at least 100 times higher in the composition than the number of molecules of all compounds having a triplet state capable of energy transfer via an emissive process or a non-emissive process.
Unsaturated Polyphosphoesters via Acyclic Diene Metathesis Polymerization
作者:Filippo Marsico、Manfred Wagner、Katharina Landfester、Frederik R. Wurm
DOI:10.1021/ma301508s
日期:2012.11.13
A powerful methodology for the synthesis of unsaturated polyphosphoesters (UPPEs) relying on acyclic diene metathesis (ADMET) polymerization is described. A facile two-step protocol gives fast access to structurally versatile and potentially degradable and biocompatible materials. For the first time this allows to control the microstructure of either backbone and/or side chains of polyphosphoesters. Four different, monomers are polymerized under different conditions to yield UPPEs with molecular weights ranging from 7000 up to 50 000 g.mol(-1) with reasonable polydispersity. The unsaturated and saturated polyphosphoesters are characterized in detail with various techniques. A major benefit of the UPPEs is revealed by differential scanning calorimetry proving the control over thermal properties with tunable melting or glass transition temperatures for the different saturated and unsaturated PPEs which is an important feature for future applications. This unique combination of the benefits of metathesis polymerization and phosphorus chemistry is a highly versatile system for materials in many applications ranging from adhesives to biomaterials.
LONG-TERM STABLE PHOTOACTIVE COMPOSITION, SUCH AS PHOSPHORESCENT COMPOSITION OR TTA-PHOTON UPCONVERSION COMPOSITION
申请人:Max-Planck-Gesellschaft zur Förderung der
Wissenschaften e.V.
公开号:EP3049502B1
公开(公告)日:2020-04-01
[EN] LONG-TERM STABLE PHOTOACTIVE COMPOSITION, SUCH AS PHOSPHORESCENT COMPOSITION OR TTA-PHOTON UPCONVERSION COMPOSITION<br/>[FR] COMPOSITION PHOTOACTIVE STABLE À LONG-TERME, TELLE QU'UNE COMPOSITION PHOSPHORESCENTE OU UNE COMPOSITION DE CONVERSION ASCENDANTE DE PHOTONS PAR TTA
申请人:MAX PLANCK GES ZUR FÖRDERUNG DER WISSENSCHAFTEN E V
公开号:WO2015044129A1
公开(公告)日:2015-04-02
A long-term stable photoactive composition, namely a phosphorescent composition or a TTA-photon upconversion composition, contains: a) at least one compound, which has a triplet state capable of energy transfer via an emissive process or a non-emissive process, wherein the at least one compound having a triplet state is i) at least one phosphorescent compound and/ or ii) at least one sensitizer compound being capable of absorbing radiation at a first frequency v1and at least one emissive compound, wherein the at least one sensitizer compound is capable of transferring energy to the at least one emissive compound and wherein the at least one emissive compound, after obtaining energy transferred from the at least one sensitizer compound, is capable of emitting light at a second frequency v2, wherein the following equation is fulfilled: v2>v1, wherein the at least one sensitizer compound is capable of a triplet-triplet energy transfer to the at least one emissive compound and wherein the at least one emissive compound is preferably capable of a triplet-triplet annihilation, and b) at least one compound capable of reacting with singlet oxygen, wherein the at least one compound capable of reacting with singlet oxygen comprises at least one terminal unsaturated carbon-carbon bond and is selected from the group consisting of compounds having anyone of the general formulae (I) to (X).
A Metathesis Route for BODIPY Labeled Polyolefins
作者:Filippo Marsico、Andrey Turshatov、Katja Weber、Frederik R. Wurm
DOI:10.1021/ol401461h
日期:2013.8.2
It is demonstrated how acyclic diene metathesis polymerization (ADMET) provides an efficient strategy for the labeling of polyolefins. The versatility of phosphorus chemistry allows designing substituted BODIPY monomers or chain stoppers for the synthesis of precise labeled (degradable) polyphosphoesters.