Výsledky vyhledávání - "Ahmed Z. Rashad"

Sustainable synthesis of CO2-derived polycarbonates from d-xylose

Autor: David K. Tran, Donald J. Darensbourg, Karen L. Wooley, Ahmed Z. Rashad

Publikováno v: Polymer Chemistry. 12:5271-5278

Synthetic transformation of D-xylose into a four-membered cyclic ether allows for reactions with carbon dioxide (CO2) leading to linear polycarbonates by either a one-step ring-opening copolymerisation (ROCOP) directly, or by sequential isolation of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::001752fa7292d60d7b7ae8727b147d8e
https://doi.org/10.1039/d1py00784j

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Placing Single-Metal Complexes into the Backbone of CO2-Based Polycarbonate Chains, Construction of Nanostructures for Prospective Micellar Catalysis

Autor: Tucker M. Folsom, Donald J. Darensbourg, Gulzar A. Bhat, Ahmed Z. Rashad

Publikováno v: Organometallics. 39:1612-1618

The copolymerization of CO2 and epoxides in the presence of chain-transfer agents (CTAs) has provided a well-controlled route to polycarbonate polyols. Upon employing dicarboxylic acid CTAs which c...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8aa2a9c564130a2c487dd1f1f8e6379
https://doi.org/10.1021/acs.organomet.9b00704

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Synthesis of terpyridine-containing polycarbonates with post polymerization providing water-soluble and micellar polymers and their metal complexes

Autor: Ahmed Z. Rashad, Donald J. Darensbourg, Gulzar A. Bhat

Publikováno v: Polymer Chemistry. 11:4699-4705

Carbon dioxide based polymers synthesized from the metal-catalyzed copolymeriation of epoxides and CO2 containing the terpyridine ligand as an end group are reported. The strategy used was to carry out the polymerization in the presence of a carboxyl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0f669ed133fb60a84d1da0397755a6f3
https://doi.org/10.1039/d0py00850h

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TEMPO Containing Radical Polymonothiocarbonate Polymers with Regio- and Stereo-Regularities: Synthesis, Characterization, and Electrical Conductivity Studies

Autor: Lei Fang, Manuel Quiroz, Xiaozhou Ji, Gulzar A. Bhat, Ahmed Z. Rashad, Donald J. Darensbourg

Publikováno v: Angewandte Chemie (International ed. in English). 60(38)

We report the synthesis of a (2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl) (TEMPO) appended polymonothiocarbonates through the ring-opening copolymerization of (4-glycidyloxy-2,2,6,6-tetramethylpiperidine-1-oxyl) (GTEMPO) in the presence of carbonyl s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6653e432a91514b3db83b6fe128a09aa
https://pubmed.ncbi.nlm.nih.gov/34270852

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Approach for Introducing a Single Metal Complex into a Polymer Chain: Metallo-Chain Transfer Agents in CO2 or COS/Epoxide Copolymerization Processes

Autor: Donald J. Darensbourg, Tucker M. Folsom, Ahmed Z. Rashad, Gulzar A. Bhat

Publikováno v: Macromolecules. 52:5217-5222

We have designed and synthesized poly(monothiocarbonate)s containing a single well-defined metal complex in the polymers’ backbone via the immortal copolymerization of carbonyl sulfide and propylen...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2b2659808aa9a9d820d087e0214e916a
https://doi.org/10.1021/acs.macromol.9b00906

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