Vibrational spectra of cyclic phosphazenes

Menéndez, José R.; Carriedo, Gabino A.; García‐Alonso, Francisco Javier; Clavijo, E.; Nazri, M.; Aroca, Ricardo F.

doi:10.1002/(sici)1097-4555(199912)30:12<1121::aid-jrs512>3.0.co;2-r

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…The crystal structures of 1, 8 2 12 and the fluorine analogue of 3, 15 have been determined by X-ray diffraction, and that of 3 is in progress in our laboratory. They have also been studied by vibrational, 16,17 and by 15 N NMR spectroscopies. 18 However, their stereochemical behavior in solution has not yet been completely elucidated.…”

Section: Introductionmentioning

confidence: 99%

Stereochemistry in solution of spiro-2,2′-dioxybiphenyl-cyclotriphosphazenes: an NMR spectroscopic study combined with molecular dynamics simulations

Amato¹,

Carriedo²,

Alonso³

et al. 2002

J. Chem. Soc., Dalton Trans.

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Section: Introductionmentioning

confidence: 99%

Stereochemistry in solution of spiro-2,2′-dioxybiphenyl-cyclotriphosphazenes: an NMR spectroscopic study combined with molecular dynamics simulations

Amato¹,

Carriedo²,

Alonso³

et al. 2002

J. Chem. Soc., Dalton Trans.

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“…These results were confirmed with the in situ Raman measurements and other relevant previous studies. [ 47,48 ]…”

Section: Resultsmentioning

confidence: 99%

“…These results were confirmed with the in situ Raman measurements and other relevant previous studies. [47,48] spectra were collected at 532 nm (laser power 0.61 mW, t acq = 50 s) with a 600 line/mm grating. For electrochemical aging, three cyclic voltammetry (CV) cycles in a voltage range of 2.8 -4.3 V with a scan rate of 150 μV s −1 were performed using an Autolab Battery Tester (Metrohm) controlled by NOVA 2.1 (Autolab) software.…”

Section: Identifying Characteristic Etpfpn Surface Species Via In Sit...mentioning

confidence: 99%

Molecular‐Cling‐Effect of Fluoroethylene Carbonate Characterized via Ethoxy(pentafluoro)cyclotriphosphazene on SiOx/C Anode Materials – A New Perspective for Formerly Sub‐Sufficient SEI Forming Additive Compounds

Ghaur

Pfeiffer

Diddens

et al. 2023

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Effective electrolyte compositions are of primary importance in raising the performance of lithium‐ion batteries (LIBs). Recently, fluorinated cyclic phosphazenes in combination with fluoroethylene carbonate (FEC) have been introduced as promising electrolyte additives, which can decompose to form an effective dense, uniform, and thin protective layer on the surface of electrodes. Although the basic electrochemical aspects of cyclic fluorinated phosphazenes combined with FEC were introduced, it is still unclear how these two compounds interact constructively during operation. This study investigates the complementary effect of FEC and ethoxy(pentafluoro)cyclotriphosphazene (EtPFPN) in aprotic organic electrolyte in LiNi0.5Co0.2Mn0.3O ∥ SiOx/C full cells. The formation mechanism of lithium ethyl methyl carbonate (LEMC)‐EtPFPN interphasial intermediate products and the reaction mechanism of lithium alkoxide with EtPFPN are proposed and supported by Density Functional Theory calculations. A novel property of FEC is also discussed here, called molecular‐cling‐effect (MCE). To the best knowledge, the MCE has not been reported in the literature, although FEC belongs to one of the most investigated electrolyte additives. The beneficial MCE of FEC toward the sub‐sufficient solid‐electrolyte interphase forming additive compound EtPFPN is investigated via gas chromatography‐mass spectrometry, gas chromatography high resolution‐accurate mass spectrometry, in situ shell‐isolated nanoparticle‐enhanced Raman spectroscopy, and scanning electron microscopy.

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“…The vibrational assignment of cyclic chloro-phosphazenes has been done on the basis of the literature. 34 According to the 3D fluorescence measurements, whose results are presented in Fig. 6a, the fluorescence of the BenzCdSe QDs is quenched once the final nanocomposite CompBenzCdSe is formed.…”

Section: D Network Formation In the Presence Of Qdsmentioning

confidence: 99%

The effect of surface modification on the fluorescence and morphology of CdSe nanoparticles embedded in a 3D phosphazene-based matrix: nanowire-like quantum dots

et al. 2011

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International audienceWe have synthesized and characterized a new type of emissive nanocomposite material consisting of a 3D inorganic-organic phosphazene-based polymer and CdSe quantum dots (QDs). The materials uniquely combine and inherit the polymers 3D character and the QD fluorescence properties. Furthermore, we have proven that benzidine molecules are suitable surface-modifiers of QDs resulting in fluorescent, nearly spherical QDs arranged into the unique nanowire-like structure. Moreover, the benzidine-to-CdSe energy transfer has been observed which can be further exploited. Characterization of the as-synthesized materials has been performed by using UV-visible and FT-IR absorption spectroscopy, energy dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), high resolution-transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM), steady-state and time-resolved fluorescence measurements

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Vibrational spectra of cyclic phosphazenes

Cited by 6 publications

References 10 publications

Stereochemistry in solution of spiro-2,2′-dioxybiphenyl-cyclotriphosphazenes: an NMR spectroscopic study combined with molecular dynamics simulations

Stereochemistry in solution of spiro-2,2′-dioxybiphenyl-cyclotriphosphazenes: an NMR spectroscopic study combined with molecular dynamics simulations

Molecular‐Cling‐Effect of Fluoroethylene Carbonate Characterized via Ethoxy(pentafluoro)cyclotriphosphazene on SiOx/C Anode Materials – A New Perspective for Formerly Sub‐Sufficient SEI Forming Additive Compounds

The effect of surface modification on the fluorescence and morphology of CdSe nanoparticles embedded in a 3D phosphazene-based matrix: nanowire-like quantum dots

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