Results 81 to 90 of about 3,034,026 (343)

Synthesis and the Spectral Investigations of Spiro, Ansa and Bridged Derivatives of Cyclochlorotriphosphazenes

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2011
The reactions of hexachlorocyclotriphosphazatriene, N3P3Cl6 (1) with 2,2-dimethylpropane-1,3-diol yield 9 new cyclophosphazene derivatives. One monospiro, N3P3Cl4[(OCH2)2-CMe2], dispiro, N3P3Cl2[(OCH2)2-CMe2]2 and tris-spiro N3P3[(OCH2)2-CMe2]3 ...
Sedat Ture
doaj   +1 more source

Defining the Structural Consequences of Mechanism-Based Inactivation of Mammalian Cytochrome P450 2B4 Using Resonance Raman Spectroscopy [PDF]

open access: yes, 2010
In view of the potent oxidizing strength of cytochrome P450 intermediates, it is not surprising that certain substrates can give rise to reactive species capable of attacking the heme or critical distal-pocket protein residues to irreversibly modify the ...
Hollenberg, Paul F.   +3 more
core   +2 more sources

Buried Interface Regulation with a Supramolecular Assembled Template Enables High‐Performance Perovskite Solar Cells for Minimizing the VOC Deficit

open access: yesAdvanced Materials, EarlyView.
Self‐assembled amphiphilic phosphonate‐based supramolecule functions as a perovskite crystallization‐driven template at SnO2/perovskite buried interface, which induces a highly preferred (100) orientation toward out‐of‐plane direction, facilitates carrier extraction and transfer, passivates the intrinsic defects, and achieves a promising efficiency of ...
Zhenrong Wang   +22 more
wiley   +1 more source

Braneworld cosmological singularities [PDF]

open access: yes, 2007
The purpose of this brief report is to present some results of our on-going project on the asymptotic behaviour of braneworld-type solutions on approach to their possible finite `time' singularities.
arxiv   +1 more source

A Facile One-Pot Construction of Succinimide-Fused Spiro[Pyrrolidine-2,3′-Oxindoles] via 1,3-Dipolar Cycloaddition Involving 3-Amino Oxindoles and Maleimides

open access: yesMolecules, 2018
Increasing interests have been invested in the development of synthetic strategies toward the construction of spiro[pyrrolidine-2,3′-oxindole], which is the core structural skeleton in some compounds with diverse biological activities.
Lunqiang Jin, Feng Liang
doaj   +1 more source

Design, Synthesis, and Biological Evaluation of New Benzoxaborole Derivatives as Potential Antimycobacterial Agents

open access: yesMedical Sciences Forum, 2022
The current study is focused on the combination of pyrazinamide with 6-aminobenzo[c][1,2]oxaborol-1(3H)-ol, which is a crucial pharmacophore of several antimicrobial agents.
Petr Šlechta   +7 more
doaj   +1 more source

Textiles screen-printed with photochromic ethyl cellulose-spirooxazine composite nanoparticles [PDF]

open access: yes, 2013
Photochromic compounds change colour on exposure to light, while the reversion may be attributable either to radiation or may be thermal. The use of photochromism on fabrics can provide new opportunities to develop smart textiles; for example, sensors ...
Feczkó, Tivadar   +2 more
core   +1 more source

Recent Advances in Wide‐Bandgap Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
wiley   +1 more source

Talking About Singularities [PDF]

open access: yes, 2007
We discuss some aspects of recent research as well as more general issues about motivation, useful methods and open problems in the field of cosmological singularities. In particular, we review some of the approaches to the general area and include discussions of the method of asymptotic splittings, singularity and completeness theorems and the use of ...
arxiv   +1 more source

Multicomponent synthesis, biological evaluation and molecular docking of new spiro-oxindole derivatives

open access: yesJournal of Taibah University for Science, 2017
A new series of spiro-oxindoles that were identified based upon their ability to inhibit methionine tRNA synthase (PDB ID: 1PFV) and glucosamine-6-phosphate synthase (PDB ID: 1JXA) enzymes in virtual screening was synthesized by a three-component 1,3 ...
M. Sapnakumari   +3 more
doaj  

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