Results 81 to 90 of about 24,914 (301)

Radical-Mediated Anti-Markovnikov Hydrophosphonation of Olefins [PDF]

open access: yes, 2011
The radical-mediated addition of triphenylphosphonium tetrafluoroborate to olefins (hydrophosphonation) is reported. Both standard radical initiators and photochemical conditions are effective, up to the gram scale.
Daeffler, Christopher S.   +1 more
core   +1 more source

Temporally Delayed Deployment of Photo‐Responsive Liquid Crystal Polymer Networks Toward Neural Interfaces

open access: yesAdvanced Healthcare Materials, EarlyView.
Deployable medical devices typically need external stimuli to trigger deployment. However, external stimuli are difficult to supply within tissues. Here, we describe a strategy to deploy small‐scale structures into soft tissues after insertion without the need for any stimulus. We demonstrate deployment within a tissue phantom.
Yeh‐Chia Tseng   +13 more
wiley   +1 more source

Tris(2,4,6-trimethoxyphenyl)phosphine (TTMPP): Efficient Catalysts for the Cyanosilylation and Cyanocarbonation of Aldehydes and Ketones

open access: yesMolecules, 2009
A variety of aldehydes and ketones were transformed to their corresponding cyanohydrin silyl ethers in good to excellent yields in the presence of 1-5 mol% of tris(2,4,6-trimethoxyphenyl)phosphine (TTMPP).
Satoru Matsukawa   +2 more
doaj   +1 more source

Reactivity of tri(2-furyl)phosphine (Pfu\u3csub\u3e3\u3c/sub\u3e) with [Mn\u3csub\u3e2\u3c/sub\u3e(CO)\u3csub\u3e10–\u3cem\u3en\u3c/em\u3e\u3c/sub\u3e(NCMe)\u3csub\u3e\u3cem\u3en\u3c/em\u3e\u3c/sub\u3e] (\u3cem\u3en\u3c/em\u3e = 0–2): X-ray Structure of \u3cem\u3emer\u3c/em\u3e-[Mn(CO)\u3csub\u3e3\u3c/sub\u3e(η\u3csup\u3e1\u3c/sup\u3e-C\u3csub\u3e4\u3c/sub\u3eH\u3csub\u3e3\u3c/sub\u3eO)(Pfu\u3csub\u3e3\u3c/sub\u3e)\u3csub\u3e2\u3c/sub\u3e] [PDF]

open access: yes, 2012
In the search for new examples of systems that self-assemble into cyclic metal–organic architectures, the six isomers of X,Y′-bis(di(1H-pyrazolyl)methane)-1,1′-biphenyl, LXY, and their silver(I) trifluoromethanesulfonate complexes were prepared.
Ghosh, Shishir   +4 more
core   +1 more source

Radical synthesis of trialkyl, triaryl, trisilyl and tristannyl phosphines from P₄ [PDF]

open access: yes, 2010
A reaction scheme has been devised according to 3 RX + 3 Ti(III) + 0.25 P₄ → PR₃ + 3 XTi(IV), wherein RX = PhBr, CyBr, Me₃SiI or Ph₃SnCl, with contrasting results in the case of more hindered RX.
Agapie   +23 more
core   +1 more source

3D Printed Multimaterial Microfluidic Transistors

open access: yesAdvanced Materials Technologies, EarlyView.
We introduce a biocompatible, high resolution photopolymer resin that closely mimics the Young's Modulus (elasticity) and reversible stretchability (no hysteresis) of poly(dimethylsiloxane) (PDMS), enabling the fabrication of microfluidic transistors (i.e., microvalves capable of proportional amplification) by multimaterial stereolithography (mSLA ...
Alireza Ahmadianyazdi   +7 more
wiley   +1 more source

TGA/FTIR Studies on the Thermal Degradation of some Polymeric Sulfonic and Phosphonic Acids and Their Sodium Salts [PDF]

open access: yes, 1999
The thermal degradation of poly(vinyl sulfonic acid) and its sodium salt, poly(4-styrenesulfonic acid) and its sodium salt, and poly(vinylphosphonic acid) was studied by a combination of techniques, including TGA/FTIR, to identify the volatile products ...
Jiang, David D.   +3 more
core   +1 more source

Development of Nanoflare Nanosensors for Monitoring Cellular Insulin mRNA in Beta Cells and Islets

open access: yesAdvanced Materials Technologies, EarlyView.
This study presents the design and application of In2‐NF probes for detecting insulin mRNA in beta cells and islets. Using spherical nucleic acid‐coated gold nanoparticles, the probes offer strong fluorescent signals upon hybridization. Their performance is validated across 2D and 3D cultures and rat islets, demonstrating sensitive, real‐time mRNA ...
Yana Hu   +7 more
wiley   +1 more source

Redox-Active Quinazolinone Thioamide Ag(I) Complexes with Potent Antibacterial Activity: Mechanistic Insights and Hydrogel-Enhanced Efficacy

open access: yesMolecules
The antibacterial properties of Ag(I) coordination compounds are well documented; however, their effectiveness is highly dependent on the choice of appropriate ligands, and it is frequently hindered by their low water solubility and limited ...
Eleni Ioanna Tzaferi   +7 more
doaj   +1 more source

Active Site Mapping of Xylan-Deconstructing Enzymes with Arabinoxylan Oligosaccharides Produced by Automated Glycan Assembly [PDF]

open access: yes, 2017
Xylan-degrading enzymes are crucial for the deconstruction of hemicellulosic biomass, making the hydrolysis products available for various industrial applications such as the production of biofuel.
de Kruijff, Goswinus H. M.   +6 more
core   +1 more source

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