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Catalytically Active Multicompartment Micelles.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Catalytically Active Multicompartment Micelles./
作者:	Ahmed, Eman.
面頁冊數:	1 online resource (350 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-01, Section: B.
Contained By:	Dissertations Abstracts International85-01B.
標題:	Polymer chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30248874click for full text (PQDT)
ISBN:	9798379776220

Catalytically Active Multicompartment Micelles.
Ahmed, Eman.

Catalytically Active Multicompartment Micelles. - 1 online resource (350 pages)

Source: Dissertations Abstracts International, Volume: 85-01, Section: B.

Thesis (Ph.D.)--New York University, 2023.

Includes bibliographical references

This thesis introduces multicompartment micelles (MCMs) as a new class of nanostructures for nonorthogonal cascade catalysis. Incompatible transformations can occur in one pot by physical site-isolation and covalent sequestering of nonorthogonal catalysts within the discrete microenvironments of the micelles. The preparation and aqueous self-assembly of catalytically active MCMs using amphiphilic block copolymers are described. By synthesizing monomers with functional handles and using living/ controlled polymerization techniques that are functional group tolerant, a facile approach towards the assembly of catalytically active MCMs in water with a plethora of morphologies is presented. Chapter 2 discusses the synthesis and characterization of compartmentalized micelles with three unique domains: hydrophilic, lipophilic, and fluorophilic segments that are self-assembled using linear block copolymers. The block copolymers are synthesized by ring-opening metathesis polymerization (ROMP) and the impact of block ratio and block order on micelle morphology is investigated. Chapter 3 introduces the preparation of MCMs using bottlebrush copolymers that are polymerized by ROMP with four discrete domains: a hydrophilic, lipophilic, fluorophilic, and siliphilic region. The impact of block ratio and block order on microphase separation is investigated. Chapter 4 demonstrates the first catalytic application of MCMs by functionalizing amphiphilic bottlebrush copolymers with L-proline derivatives for aqueous asymmetric aldol addition. The impact of catalyst location, block ratio, and functionality on micelle morphology and, ultimately, catalytic efficiency are studied. Chapter 5 explores the use of MCMs for aqueous nonorthogonal cascade catalysis by site-isolating incompatible acid and base catalysts. MCMs are assembled using hydrophilic, lipophilic, and fluorophilic regions and compartmentalization of the acid and base catalysts within the hydrophilic and hydrophobic domains, respectively, to enable a three-step cascade transformation in a single reaction vessel. Chapter 6 summarizes the thesis research and concludes with future research directions in the implementation of MCMs for nonorthogonal multistep catalysis.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798379776220Subjects--Topical Terms:

3173488
Polymer chemistry.
Subjects--Index Terms:

Bottlebrush copolymersIndex Terms--Genre/Form:

542853
Electronic books.

Catalytically Active Multicompartment Micelles.
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653 $a Polymeric nanoreactors
653 $a Supported catalysis
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