Scott, Philip J. published the artcilePhosphonium-Based Polyzwitterions: Influence of Ionic Structure and Association on Mechanical Properties, Synthetic Route of 55788-44-8, the publication is Macromolecules (Washington, DC, United States) (2020), 53(24), 11009-11018, database is CAplus.
This manuscript describes a synthetic strategy and structure-property investigation of unprecedented phosphonium-based zwitterionic homopolymers (polyzwitterions) and random copolymers (zwitterionomers). Free radical polymerization of 4-(diphenylphosphino)styrene (DPPS) provided neutral polymers containing reactive triarylphosphines. Quant. postpolymn. alkylation of these pendant functionalities generated a library of polymers containing various concentrations of neutral phosphines, phosphonium ions, and phosphonium sulfobetaine zwitterions. The zwitterionic homo- and copolymers exhibited significantly higher glass transition temperatures (Tg) and enhanced mech. reinforcement in comparison to neutral and phosphonium analogs. These changes in Tg and mech. properties were attributed to nanoscale morphol. domains, which formed due to electrostatic interactions between zwitterionic groups, as revealed by X-ray scattering and broadband dielec. spectroscopy (BDS). BDS revealed increased static dielec. constants (>25) for the phosphonium zwitterionomers compared to ionomeric or neutral analogs. These high static dielec. constants for the solvent-free polyzwitterions supported their stronger polarization response in comparison with polymers containing neutral phosphines and phosphonium ions, and these interactions accounted for morphol. differences and enhanced mech. behavior. This work describes a versatile strategy for modulating electrostatic interactions with tunable mech. properties for an unprecedented family of zwitterionic polymers.
Macromolecules (Washington, DC, United States) published new progress about 55788-44-8. 55788-44-8 belongs to bromides-buliding-blocks, auxiliary class Bromide,Salt,Aliphatic hydrocarbon chain,Aliphatic hydrocarbon chain, name is Sodium 3-bromopropane-1-sulfonate, and the molecular formula is C12H17NS2, Synthetic Route of 55788-44-8.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary