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Ligand Substituent Effects on Redox-...

Alexander, Lewis Laughlin.

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Ligand Substituent Effects on Redox-Switchable Polymerization Catalysts.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Ligand Substituent Effects on Redox-Switchable Polymerization Catalysts./
Author:	Alexander, Lewis Laughlin.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2018,
Description:	97 p.
Notes:	Source: Masters Abstracts International, Volume: 57-06.
Contained By:	Masters Abstracts International57-06(E).
Subject:	Inorganic chemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10829508
ISBN:	9780438089389

Ligand Substituent Effects on Redox-Switchable Polymerization Catalysts.
Alexander, Lewis Laughlin.

Ligand Substituent Effects on Redox-Switchable Polymerization Catalysts. - Ann Arbor : ProQuest Dissertations & Theses, 2018 - 97 p.

Source: Masters Abstracts International, Volume: 57-06.

Thesis (M.S.)--University of California, Los Angeles, 2018.

Plastic pollution necessitates the need for new sustainable polymer technologies. Such materials are accessible via the construction of biobased materials and biodegradable microstructural engineering. Such motifs can be rationally synthesized via redox-switchable catalysis, which exhibits orthogonal reactivity towards various monomers. In this vein, this work aims to ascertain ligand substitution as a modality of control over the orthogonal reactivity. By investigating a set of substituents on a phosphen ligand scaffold with varied electron-donating and electron-withdrawing effects, an investigation into the electronic properties of such catalysts is undertaken. Synthesis and characterization of one variant of the yttrium complexes of interest is presented, as well as its reactivity in ring-opening polymerizations. These findings are compared to previous work with another yttrium analogue. Essentially, no ligand substitution effect was found, but reactivity toward an additional orthogonal monomer was discovered.

ISBN: 9780438089389Subjects--Topical Terms:

3173556
Inorganic chemistry.

Ligand Substituent Effects on Redox-Switchable Polymerization Catalysts.
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245 1 0 $a Ligand Substituent Effects on Redox-Switchable Polymerization Catalysts.
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300 $a 97 p.
500 $a Source: Masters Abstracts International, Volume: 57-06.
500 $a Adviser: Paula Loredana Diaconescu.
502 $a Thesis (M.S.)--University of California, Los Angeles, 2018.
520 $a Plastic pollution necessitates the need for new sustainable polymer technologies. Such materials are accessible via the construction of biobased materials and biodegradable microstructural engineering. Such motifs can be rationally synthesized via redox-switchable catalysis, which exhibits orthogonal reactivity towards various monomers. In this vein, this work aims to ascertain ligand substitution as a modality of control over the orthogonal reactivity. By investigating a set of substituents on a phosphen ligand scaffold with varied electron-donating and electron-withdrawing effects, an investigation into the electronic properties of such catalysts is undertaken. Synthesis and characterization of one variant of the yttrium complexes of interest is presented, as well as its reactivity in ring-opening polymerizations. These findings are compared to previous work with another yttrium analogue. Essentially, no ligand substitution effect was found, but reactivity toward an additional orthogonal monomer was discovered.
590 $a School code: 0031.
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