13 OctChemical Science Student SeminarCyclic-based copolymer synthesis and self assembly in bulk and selective solvent
Cyclic-based copolymer synthesis and self assembly in bulk and selective solvent
  • Fatimah Aldakheel, ChemS PhD Student, Supervised by Professor Nikos Hadjichristidis and co supervised by Professor Kuo-Wei Huang
  • Sunday, October 13, 2019
  • 12:00 PM - 12:30 PM
  • Auditorium Between Buildings 4 & 5
2019-10-13T12:002019-10-13T12:30Asia/RiyadhCyclic-based copolymer synthesis and self assembly in bulk and selective solvent ChemS and CE Student SeminarAuditorium Between Buildings 4 & 5Linda J. SapoluLinda.Sapolu@kaust.edu.sa

Abstract: Well-defined cyclic diblock copolymer of c(PI-b-PS) (PI: polyisoprene, PS: polystyrene) with controlled molecular weight(Mn) and polydispersity index (PDI) was synthesized by combination of anionic polymerization high vacuum techniques(HVTs) and Glaser coupling (cyclization) reaction. Initially, well-defined dihydroxyl linear diblock copolymer of HO-PI-b-PS-OH type was synthesized via anionic polymerization using t-butyl-dimethylsilyloxypropyllithium as initiator. Furthermore, acyclic diblock copolymer of c(PS-b-PI) was successfully obtained in high yield. The synthetic procedure involves: a) deprotection of t-butyl-dimethylsilyloxypropyl functional end group, b) esterification of -OH groups to introduce two alkynyl groups and c) Glaser coupling reaction, under high dilution. All intermediates and final products were characterized by gel permeation chromatography (GPC) and proton nuclear magnetic resonance spectroscopy (1H NMR).

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  • Linda J. Sapolu
  • Linda.Sapolu@kaust.edu.sa

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