研究目的
Investigating the synthesis and properties of temperature and light sensitive copolymers with controlled aggregation during phase transitions.
研究成果
The study successfully synthesized thermosensitive PMP and PEP and thermo/light sensitive PMABz with tunable LCSTs. The particle size of PMABz could be controlled by light irradiation, and the particles exhibited regular morphologies after quenching, indicating potential applications in molecular recognition, catalyst carriers, and controlled drug release.
研究不足
The study focuses on the synthesis and basic characterization of the copolymers. Further detailed studies on their applications are needed.
1：Experimental Design and Method Selection:
The study involved the synthesis of thermosensitive copolymers (PMP/PEP) and a thermo/light sensitive copolymer (PMABz) via a ring-opening reaction and subsequent radical polymerization using a one-pot method.
2：Sample Selection and Data Sources:
The materials used included 2-methyl-2-oxazoline, 2-ethyl-2-oxazoline, 2-phenyl-2-oxazoline, mercaptoethanol, acryloyl chloride, and p-aminoazobenzene.
3：List of Experimental Equipment and Materials:
Equipment included a Vector22 FTIR spectrometer, Bruker AVANCE III spectrometer for 1H NMR, Agilent1200 GPC system, Unico UV-3600 spectrophotometer, and Phenom ProX Desktop SEM.
4：Experimental Procedures and Operational Workflow:
The synthesis involved the ring-opening reaction of oxazolines with acrylic acid, followed by radical copolymerization. The LCST was measured by detecting optical transmittance at different temperatures.
5：Data Analysis Methods:
The LCST was defined as the temperature where the transmittance decreased to 50% of the initial value during heating.
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