Synthesis and Characterization of Poly[bis(resorcinol monobenzoate) phosphazenes] and Poly[bis(resorcinol monobenzoate diethylamino) phosphazenes] and Their Self Assembly Behaviors

Amin, Abid M.; Wang, Li; Wang, Jianjun; Amer, Wael A.; Yu, Haipeng; Gao, Jianhong

doi:10.1007/s10904-011-9456-z

Cited by 11 publications

(4 citation statements)

References 32 publications

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“…During replacement reaction, triethylamine was converted into diethylamine. As we proved in our previous work, TEA was converted to diethylamine (32) and TEA conversion into diethylamine, this had already been proven by some other researchers as well (33)(34)(35)(36)(37). 31 P-NMR peaks of PPOBADEAP shown at 20.297 ppm indicated the complete substitution of the PDCP chlorines as shown in Figure 7 (A, B).…”

Section: Synthesis and Characterization Of Ppobadeap Ppobap And Pdeapsupporting

confidence: 68%

Synthesis and Characterization of Poly[bis(p-oxybenzaldehyde diethylamino)phosphazenes], Poly[bis(p-oxybenzaldehyde)phosphazenes], Poly[bis(diethylamino)phosphazenes] and their Self- assembly Behaviors

Amin

Wang

et al. 2011

Journal of Macromolecular Science, Part A

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Polydichlorophosphazenes (PDCP) were synthesized through ring opening polymerization of hexachlorocyclotriphosphazene (HCCP). The polymerization behavior of HCCP under varying conditions of time and amount of catalyst was investigated. The chlorine atoms in polydichlorophosphazenes (PDCP) were substituted with p-oxybenzaldehyde and (or) diethylamine to synthesize poly[bis(p-oxybenzaldehyde diethylamino)phosphazenes](PPOBADEAP), poly[bis(p-oxybenzaldehyde)phosphazenes] (PPOBAP) and poly[bis(diethyl amino) phosphazenes] (PDEAP). The supporting evidence for the success of this synthesis was provided by nuclear magnetic resonance ( 1 H-NMR, and 31 P-NMR), gel permeation chromatography (GPC), and energy-dispersive X-ray spectroscopy (EDAX). The self-assembly behavior of PPOBADEAP, PPOBAP and PDEAP was observed in different solvents by the same concentration of polymers. The optical microscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images indicated that PPOBADEAP formed various morphologies in different solvents while PPOBAP and PDEAP did not show self-assembly behavior at the same conditions.

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Section: Synthesis and Characterization Of Ppobadeap Ppobap And Pdeapsupporting

confidence: 68%

Synthesis and Characterization of Poly[bis(p-oxybenzaldehyde diethylamino)phosphazenes], Poly[bis(p-oxybenzaldehyde)phosphazenes], Poly[bis(diethylamino)phosphazenes] and their Self- assembly Behaviors

Amin

Wang

et al. 2011

Journal of Macromolecular Science, Part A

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“…Polyphosphazenes have gained lots of attention in biological applications due to their unique properties [1][2][3][4][5][6][7]. The backbone of this polymer contains alternating Nitrogen and Phosphorous atoms which have two pendant groups on each phosphorous atom.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3]. The degradation mechanism of polyphosphazene has not been fully understood but the current scheme is result of various experimental studies [4,5]. During the hydrolysis, water molecules attack on side groups replacing it with the hydroxyl group.…”

Section: Introductionmentioning

confidence: 99%

“…During the hydrolysis, water molecules attack on side groups replacing it with the hydroxyl group. Hydroxyl group poses electron withdrawing effect on the chain and resultantly chain tautomerizes facilitating the degradation finally splitting into the end products such as ammonia, phosphate, phosphoric acid and conjugate acid of side group [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Mathematical Modeling of Polyphosphazenes

Abid

Hussain²,

Qureshi

et al. 2021

Acta Chemica Malaysia

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Polyphosphazenes was synthesized and their self assembly behavior was observed as reported in our previous work [1–5]. A number of experiments were carried out to study the polymerization behavior at various conditions of the polymerization time and temperature. The experimental data were analyzed by graphical and statistical methods and it was found that the polymerization phenomena was controlled by the synthesis time, i.e. Mw=Moeksts, where Mw is molecular weight of the polymer at time ts, Mo (=203. 24) is pre-exponential factor in the model and ks(=1.0686) is synthesis rate constant for the polymer.

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Polyphosphazenes – Synthetically Versatile Block Copolymers (“Multi‐Tool”) for Self‐Assembly

2018

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This microreview outlines recent advances on the synthesis and self-assembly of polyphosphazene diblock copolymers, a class of versatile polymers (Multi-Tool) able to generate a great variety of different well-defined nanomorphologies. Particular focus is placed on the synthesis of linear block copolymers composed of two polyphosphazene chains (PP-b-PP′), or hybrid polymers combining one PP chain with a non- [a] 2484 Gabino A. Carriedo (Ph D in 1981) is Full-time Professor of Inorganic Chemistry in the University of Oviedo since 1989. His research interest in synthetic chemistry has included coordination and organometallic chemistry, electrochemistry and polymer chemistry. Since 1995 he has focused in designed syntheses of phosphazene polymers and their chemical derivatization. (2012) developing new synthetic methodologies in organic chemistry by means of organometallic carbene reagents under the supervision of Prof. J. Barluenga and Prof. J. Flórez. After, she moved to the group of D. Dixon (Oxford) to explore new catalytic asymmetric methodologies. She returned to the University of Oviedo in 2015 as Post-doctoral research assistant. Nowadays, her research is focused on the synthesis and self-assembly of new material based on polyphosphazene polymers. 2488 Scheme 4. Synthesis of linear polyphosphazene diblock copolymers 28-35 by sequential living cationic polymerization of phosphoranimines of type (X)(R 1 )(R 2 )P=N-SiMe 3 over living chains of 1[PCl 6 ]. Scheme 5. Sequential living polymerization of phosphoranimine 36 by using active end-groups of polyphosphazene 17 as initiators. The synthesis of BCP 37 is suggested in ref. 47. methodologies afforded the PP-b-PS copolymers with moderately good yields (< 60 %) and polydispersities (< 1.3). Scheme 10. Synthetic routes to polyphosphazene-b-polystyrene, PP-b-PS, via macromolecular coupling of telechelic (PS) n -P(R) 2 = N-SiMe 3 , 53 and 54, with an end-capped poly(dichlorophosphazene) 55 (Ec. c). Raquel de la Campa was born in Cangas del Narcea (Asturias, Spain) in 1981. He obtained his PhD at the University of OviedoRecently, our group developed a very convenient synthesis for linear hybrid PP-b-PS block copolymers (Scheme 11). [63] Using the lithiated-phosphine 56 as initiator, the anionic polymerization of styrene gave the telechelic polystyrene 57 (PS m -PPh 2 ) after quenching the reaction with Cl-SiMe 3 . The chlorination of Scheme 11. Synthetic routes to polyphosphazene-b-polystyrene, PP-b-PS (60), via lithiated-phosphine initiator 56, and macromolecular initiator 58.2492 57 led to PS m -PPh 2 Cl 2 (58) having -PPh 2 Cl 2 end-groups that initiate the polymerization of Cl 3 P=N-SiMe 3 (6) producing the block copolymer [N=PCl 2 ] n -PS m (59). The macromolecular substitution of the chlorine atoms by -OCH 2 CF 3 groups yielded the block copolymer [N=P(OCH 2 CF 3 ) 2 ] n -PS m (60) having crystalline PP blocks. This synthetic methodology afforded the hybrid PP-b-PS block copolymer in 70 % yield and with narrower polydispersities (PDI = 1.2) than those of the...

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Synthesis and Characterization of Poly[bis(resorcinol monobenzoate) phosphazenes] and Poly[bis(resorcinol monobenzoate diethylamino) phosphazenes] and Their Self Assembly Behaviors

Cited by 11 publications

References 32 publications

Synthesis and Characterization of Poly[bis(p-oxybenzaldehyde diethylamino)phosphazenes], Poly[bis(p-oxybenzaldehyde)phosphazenes], Poly[bis(diethylamino)phosphazenes] and their Self- assembly Behaviors

Synthesis and Characterization of Poly[bis(p-oxybenzaldehyde diethylamino)phosphazenes], Poly[bis(p-oxybenzaldehyde)phosphazenes], Poly[bis(diethylamino)phosphazenes] and their Self- assembly Behaviors

Mathematical Modeling of Polyphosphazenes

Polyphosphazenes – Synthetically Versatile Block Copolymers (“Multi‐Tool”) for Self‐Assembly

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