Spectroscopic Investigation of Tungsten Ions in Lead Scandium Phosphate Glass System

Rao, B. Lakshmana; Babu, Y.; Prasad, P. Syam; Prasad, S.V.G.V.A.

doi:10.1080/00387010.2013.856326

Cited by 2 publications

(1 citation statement)

References 41 publications

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“…Earlier our group has reported the synthesis and activity of unusual spiro annulated O‐allyl biscoumarins using Grubbs 2 nd generation catalyst. In continuation of our work, we here are reporting the possibility of accessing new structurally diverse carbocyclics as well as heterocyclic systems and dioxocin annulated coumarin derivatives using ring closing metathesis (RCM).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Highly Z‐Selective Coumarin Annulated Dioxocine, Dioxacindione and Macrocycles Using Grubbs’ Second‐Generation Catalyst

et al. 2017

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The diversity‐oriented organic synthesis of novel coumarin annulated tricyclic dioxocine, dioxacindione scaffolds with Z‐selectivity and the symmetrical pentacyclic coumarin macrocyclic derivatives is demonstrated from substituted hydroxyl coumarins via ring‐closing metathesis in the presence of Grubbs’ second‐generation catalyst as the facile and efficient route with excellent yields. This synthetic strategy provides a route for the intramolecular ring‐closing metathesis to access a library of novel tricyclic coumarin heterocycles and pentacyclic coumarin macrocycles having different ring systems.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Highly Z‐Selective Coumarin Annulated Dioxocine, Dioxacindione and Macrocycles Using Grubbs’ Second‐Generation Catalyst

et al. 2017

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Comprehensive study on physical, elastic and shielding properties of lead zinc phosphate glasses

Matori

Sayyed

Sidek

et al. 2017

Journal of Non-Crystalline Solids

129

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A series of ternary phosphate glasses in the form of (PbO)x(ZnO)60-x(P2O5)40 where x = 0-60 mol%, have been successfully prepared by conventional melt-quenching technique. The physical and elastic properties of the glasses have been investigated using pulse echo technique. The longitudinal and shear velocity of the glasses were measured using the MBS8000 ultrasonic data acquisition system at 10 MHz frequency in room temperature. The density, ultrasonic velocity and elastic moduli are found to be composition dependent and the correlation between the elastic moduli with the atomic packing density is discussed in detailed. The shielding parameters, mass attenuation coefficients, half value layers and exposure buildup factor (EBF) values have been computed using WinXCom program with the use of GP fitting method, and variation of shielding parameters are discussed for the effect of PbO addition into the glasses and photon energy. An increase in the density of the glasses results in a change in crosslink density. The sound velocity and elastic properties increased with PbO content and increase in Poisson's ratio trend suggests that the rigidity of the glasses has decreased. Besides, the replacement of ZnO by PbO causes an increase in mass attenuation coefficient, while the half value layer and the exposure buildup factor were decreased and these glasses has been potentially used as shielding material.

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Spectroscopic Investigation of Tungsten Ions in Lead Scandium Phosphate Glass System

Cited by 2 publications

References 41 publications

Synthesis of Highly Z‐Selective Coumarin Annulated Dioxocine, Dioxacindione and Macrocycles Using Grubbs’ Second‐Generation Catalyst

Synthesis of Highly Z‐Selective Coumarin Annulated Dioxocine, Dioxacindione and Macrocycles Using Grubbs’ Second‐Generation Catalyst

Comprehensive study on physical, elastic and shielding properties of lead zinc phosphate glasses

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