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text Moore, Jeffrey S. Moore, Jeffrey S. Suslick, Kenneth S. Zimmerman, Steven Guironnet, Damien Casey, Catherine M 2017-03-01T17:00:53Z 2017-03-01T17:00:53Z 2019-03-02T10:15:21Z 2016-09-27 2016-12 Stimuli-responsive materials are materials exhibit a response when exposed to specific external triggers. These materials are powerful tools for material development in areas such as encapsulation, photoresists, sensors, self-healing materials, drug delivery, and transient electronic devices. A variety of chemical triggers can be employed to stimulate materials, for this work the focus has been on pH-responsive materials. Materials which can be triggered with pH have a variety of applications in biological and industrial fields. This thesis is split into two main parts: 1) the development of acid-triggerable covalently-crosslinked polymersomes and 2) the design and synthesis of base-, heat-, and fluoride-sensitive poly(olefin sulfone)s. Polymersomes are a useful approach for encapsulation but are susceptible to environmental stressors and leakage. By tuning the nanoscale architecture of the polymersomes with reversible chemical modifications, their stability can be improved while still allowing triggered release capabilities that permanently cross-linked polymersomes lack. Using dynamic covalent imine chemistry, terminally functionalized polymers were reversibly connected within polymersome membranes in the presence of reactive linkers. The connection of these polymer was investigated using two polymersome systems, poly(styrene-b-acrylic acid) in Chapter 2 and poly(styrene-b-ethylene oxide) in Chapter 3. Poly(olefin sulfone)s are a class of polymers known to degrade in the presence of base, as well as through thermolysis and radiolysis. In order to develop novel materials for applications in encapsulation and transient electronic devices, molecular design criteria needed to achieve rapid, base degradation of poly(olefin sulfone)s at room temperature were investigated,. Poly(vinyl ester sulfone)s and poly(vinyl butyl carbonate sulfone)s were synthesized and shown to degrade more rapidly than aliphatic poly(olefin sulfone)s (Chapter 4 and 5). Additional work has focus on the design of fluoride sensitive poly(olefin sulfone)s and the modulation of the thermal degradation of poly(tert-butyl carbonate sulfone) and poly(phthalaldehyde) (Chapter 5). Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2018-12-01 The student, Catherine Casey, accepted the attached license on 2016-09-26 at 10:17. The student, Catherine Casey, submitted this Dissertation for approval on 2016-09-26 at 10:18. This Dissertation was approved for publication on 2016-09-27 at 10:45. DSpace SAF Submission Ingestion Package generated from Vireo submission #10170 on 2017-02-28 at 14:40:51 Made available in DSpace on 2017-03-01T17:00:53Z (GMT). No. of bitstreams: 4 CASEY-DISSERTATION-2016.pdf: 8084681 bytes, checksum: 1c015bdf618103ec87a0a16ebe720a9c (MD5) Copyright Clearance -- Trigger.pdf: 144837 bytes, checksum: 778039000dc0bb63c6aecc59eb0bc792 (MD5) LICENSE.txt: 4212 bytes, checksum: e3bce02447e31febe78c59f143462a1f (MD5) PROQUEST_LICENSE.txt: 4558 bytes, checksum: 625f444b159ed9eee4ddb53a0a608ad3 (MD5) Previous issue date: 2016-09-27 Embargo set by: Seth Robbins for item 98664 Lift date: 2019-03-01T17:02:22Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Embargo set by: Seth Robbins for item 98664 Lift date: 2019-03-01T17:03:32Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Embargo set by: Seth Robbins for item 98664 Lift date: 2019-03-01T17:05:02Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Embargo set by: Seth Robbins for item 98664 Lift date: 2019-03-01T17:06:55Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Limited Restriction Lifted for Item 98664 on 2019-03-02T10:15:21Z. application/pdf http://hdl.handle.net/2142/95548 en Copyright 2016 Catherine Marie Possanza Casey Stimuli-responsive Poly(olefin sulfone) Base degradable Acid degradable Polymersome pH Triggered release Transient Capsule Encapsulation Design and development of stimuli-responsive materials: pH sensitive polymersomes and poly(olefin sulfone)s text Chemistry Chemistry University of Illinois at Urbana-Champaign Dissertation Ph.D.