ChemInform Abstract: New Strategies in Preparing Organo‐Substituted Cyclophosphazenes.

Grampel, J. C. Van Der; Buwalda, P. L.; Huizen, A. A. Van Der; Wilting, T.; Meetsma, Auke; Bolhuis, F. Van

doi:10.1002/chin.198740262

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“…The idea behind the ambient temperature ROP mechanism with catalytic quantities of Lewis acids was proposed by van de Grampel et al, where it was suggested that the sulfonylation reaction comes from the initial coordination of the metal in the Lewis acid to the oxygen atom on the sulfur, as seen in Scheme 14. 99 It is then believed that the chlorine atom on the sulfur attacks the metal atom on the oxygen, which then breaks the bond to form a thionylphosphazene cation. The propagation step of this mechanism is proposed to be similar to that of the thermal ROP mechanism.…”

Section: Proposed Ambient Temperature Rop Mechanism With Lewis Acidsmentioning

confidence: 99%

The Preparation of New Polystyrenic Onium and Substituted Poly(Thionylphosphazene) Antimicrobials

Carafa

2024

Preprint

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<p>With increasing concern over AMR in bacteria, the synthesis of traditional and non-traditional antimicrobial polymers is of interest. The first project focuses on preparing new polystyrenic quaternary compounds that will be grafted to plastic surfaces. Three quaternary styrenic polymers (4-6) and their respective random copolymers with styrene (7-9) were synthesized and grafted onto HDPE, where biological testing of coatings 4, 5 and 7 using the LDI protocol showed some bacterial reduction with alkyl chain lengths ≥ 4. The second project focuses on synthesizing novel thionylphosphazene monomers and looking into greener polymerization routes. Two novel thionylphosphazene monomers (13-14) were synthesized and a greener polymerization route was obtained using Lewis acid-catalyzed microwave irradiation. The third project involves undertaking DFT calculations of various cyclic thionylphosphazenes to study alternate polymerization routes of these compounds. Energy calculations showed the potential for substituted thionylphosphazenes with small substituents to polymerize under ambient temperatures with Lewis acid catalysts.</p>

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Section: Proposed Ambient Temperature Rop Mechanism With Lewis Acidsmentioning

confidence: 99%

The Preparation of New Polystyrenic Onium and Substituted Poly(Thionylphosphazene) Antimicrobials

Carafa

2024

Preprint

View full text Add to dashboard Cite

show abstract

ChemInform Abstract: New Strategies in Preparing Organo‐Substituted Cyclophosphazenes.

Cited by 1 publication

References 1 publication

The Preparation of New Polystyrenic Onium and Substituted Poly(Thionylphosphazene) Antimicrobials

The Preparation of New Polystyrenic Onium and Substituted Poly(Thionylphosphazene) Antimicrobials

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