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000909071 1001_ $$00000-0001-9267-1220$$aPrause, Albert$$b0
000909071 245__ $$aAggregation Behavior of Nonsymmetrically End-Capped Thermoresponsive Block Copolymers in Aqueous Solutions: Between Polymer Coils and Micellar States
000909071 260__ $$aWashington, DC$$bSoc.$$c2022
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000909071 520__ $$aThe thermosensitive aggregation behavior in an aqueous solution of a library of amphiphilic BAB* copolymers is studied, where “A” represents a long permanently hydrophilic poly(N,N-dimethylacrylamide) (pDMAm) block, “B” represents a permanently hydrophobic end with an n-dodecyl chain, and “B*” represents a thermoresponsive (TR) block featuring a lower critical solution temperature (LCST). Four polyacrylamides are employed for B*, namely, poly(N-n-propylacrylamide) (pNPAm), poly(N-isopropylacrylamide) (pNiPAm), poly(N,N-diethylacrylamide) (pDEAm), and poly(N-acryloylpyrrolidine) (pNAP), which differ with respect to the hydrophilicity of their amide side chains and LCST behavior. While blocks A and B were kept constant, the lengths of the TR blocks were varied systematically. These amphiphilic copolymers were studied as a function of concentration and temperature via light and neutron scattering (static light scattering (SLS), dynamic light scattering (DLS), small-angle neutron scattering (SANS)). For sufficiently long pNiPAM and pDEAm blocks (DPn > 40), a pronounced hydrophobic effect at temperatures above the LCST transition results in well-structured, ordered aggregates. Thus, the aggregation can be controlled by the choice and length of the TR block, thereby elucidating a so far hardly explored class of temperature-sensitive polymeric amphiphiles.
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000909071 65017 $$0V:(DE-MLZ)GC-1602-2016$$2V:(DE-HGF)$$aPolymers, Soft Nano Particles and  Proteins$$x0
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000909071 7001_ $$0P:(DE-HGF)0$$aHechenbichler, Michelle$$b1
000909071 7001_ $$0P:(DE-HGF)0$$avon Lospichl, Benjamin$$b2
000909071 7001_ $$0P:(DE-Juel1)144382$$aFeoktystov, Artem$$b3$$ufzj
000909071 7001_ $$00000-0001-8078-2089$$aSchweins, Ralf$$b4
000909071 7001_ $$0P:(DE-HGF)0$$aMahmoudi, Najet$$b5
000909071 7001_ $$00000-0003-2443-886X$$aLaschewsky, André$$b6$$eCorresponding author
000909071 7001_ $$00000-0002-7262-7115$$aGradzielski, Michael$$b7$$eCorresponding author
000909071 773__ $$0PERI:(DE-600)1491942-4$$a10.1021/acs.macromol.2c00878$$gVol. 55, no. 13, p. 5849 - 5863$$n13$$p5849 - 5863$$tMacromolecules$$v55$$x0024-9297$$y2022
000909071 8564_ $$uhttps://juser.fz-juelich.de/record/909071/files/acs.macromol.2c00878.pdf
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