Appendix: Harry R. Allcock Bibliography

Allcock, Harry R.

doi:10.1007/s10904-006-9069-0

Cited by 28 publications

(48 citation statements)

References 136 publications

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“…Thus, due to their synthetic versatility, poly(organophosphazenes) provide an excellent means for exploring the effects of changes in the shape, size, and flexibility of organic side groups. 27 Solubility. The solubility of polyphosphazenes is strongly controlled by the side groups.…”

Section: Scheme 2 Synthesis Of Poly[bis(cycloalkanoxy)phosphazenes] mentioning

confidence: 99%

Phosphazene High Polymers and Models with Cyclic Aliphatic Side Groups: New Structure–Property Relationships

et al. 2015

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Poly(dichlorophosphazene) is a versatile precursor material for accessing new polymeric materials via the introduction of various side groups by chlorine replacement reactions. Herein, methods are described for the synthesis of a new series of phosphazene single-and mixed-substituent high polymers containing cyclic aliphatic rings, −C n H 2n−1 (where n = 4−8). These reactions were preceded by model reactions using small molecule cyclic trimeric phosphazenes. The new high polymers are amorphous, transparent, and film-and membrane-forming materials with a wide range of glass transition temperatures (−60 to +40°C) depending on the side groups and cosubstituents. All are hydrophobic and resistant to hydrolytic breakdown.

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Section: Scheme 2 Synthesis Of Poly[bis(cycloalkanoxy)phosphazenes] mentioning

confidence: 99%

Phosphazene High Polymers and Models with Cyclic Aliphatic Side Groups: New Structure–Property Relationships

et al. 2015

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“…The reactions of hexachlorocyclotriphosphazatriene, N 3 P 3 Cl 6 , which is known as the standard compound in the field of phosphazene and polyorganophosphazene chemistry, [1][2][3][4][5] with bulky bifunctional reagents lead to the formation of spiro-, ansa-, spiro-ansa-, binoarchitectures and cyclolinear or cyclomatrix polymers. [6][7][8][9] The different substituents that are bonded to phosphorus atoms are very effective for the determination of the physical and chemical properties of new phosphazene derivatives and polyorganophosphazenes.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus-nitrogen compounds: Part 15. Synthesis, anisochronism and the relationship between crystallographic and spectral data of monotopic spiro-crypta phosphazenes

et al. 2008

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The reactions of hexachlorocyclotriphosphazatriene, N 3 P 3 Cl 6 , with N 2 O 2 -donor type coronands,, respectively. The reaction of 4 with excess pyrrolidine leads to the formation of geminal. The 31 P-NMR spectra of 5 and 6 indicate that these compounds have anisochronism. The structures of 5, 6 and 7 were investigated by X-ray crystallography. For 7, the sums of the bond angles around the N atoms were 348⋅6(2)° and 349⋅7(2)° indicating that the N atoms have pyramidal configurations and are stereogenic. The relationship between the chemical shift values δP (spiro) and the Δ(P-N) (electron density transfer parameters) of 4, 5, 6, 7 and the analogous compounds as well as the relationship between the Δ(δP) values and the above mentioned Δ(P-N) are presented respectively. In addition, the relationship between the endocyclic NPN bond angles of these compounds and the 31 P-NMR chemical shifts of the spiro-phosphorus atoms were investigated. The spectroscopic and structural investigations of the compounds were made by elemental analyses, MS, FTIR, one-dimensional 1 H-, 13 C-, 31 P-NMR, DEPT and two-dimensional COSY, HETCOR, HMBC, homo-and heteronuclear correlation techniques.

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“…7-12 Different side-group structures affect the chemical and physical properties of ring systems and high polymers based on a phosphazene skeleton. [13][14][15][16][17][18][19][20] Cyclotetraphosphazenes, which contain a flexible eight-membered ring rather than the rigid planar six-membered ring present in their trimer analogues, might form complexes for efficient DNA cleavage. 21 Recently, we reported a series of polydentate cyclotriphosphazene ligands, 22,23 which showed good nuclease activity with hydrolytic cleavage mechanism.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Side Group–Modified Cyclotetraphosphazene Derivatives

Zhang

Liang

Zhang

et al. 2011

Phosphorus, Sulfur, and Silicon and the Related Elements

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Two novel cyclotetraphosphazene derivatives were synthesized by the reaction of octachlorocyclotetraphosphazene with the potassium salt of 4-hydroxybenzaldehyde, and subsequent reduction of aldehyde groups to alcohol groups using sodium borohydride. The bromination reaction was carried out using PBr 3 to give N 4 P 4 (OC 6 H 4 -p-CH 2 Br) 8 (4). This compound was employed in reaction with imidazole or morpholine to produce eight-armed, star-branched title compounds. The target compounds were characterized by 1 H, 31 P, and 13 C NMR as well as IR and ESI-MS. The Cu complex of 5a was effective in oxidative cleavage reactions.

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Appendix: Harry R. Allcock Bibliography

Cited by 28 publications

References 136 publications

Phosphazene High Polymers and Models with Cyclic Aliphatic Side Groups: New Structure–Property Relationships

Phosphazene High Polymers and Models with Cyclic Aliphatic Side Groups: New Structure–Property Relationships

Phosphorus-nitrogen compounds: Part 15. Synthesis, anisochronism and the relationship between crystallographic and spectral data of monotopic spiro-crypta phosphazenes

Synthesis and Characterization of Side Group–Modified Cyclotetraphosphazene Derivatives

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