Results 71 to 80 of about 49,127 (287)

Lipase-Catalyzed Polymerization of Glycerol and Dicarboxylic Acids in an Organic Medium

Molecules, 2000
Lipases from different sources catalyze the polyesterification of glycerol and several dicarboxylic acids in presence or organic ...
Romina C. Pessagno, Alicia Baldessari
doaj   +1 more source

Re-evaluating the list of high-production chemicals predicted to become Arctic contaminants [PDF]

, 2010
The large number of historical and current organic chemicals in commerce, and the ability of these compounds to make their way from industrial to remote regions, has resulted in concerted efforts to predict which chemicals have the capacity to migrate ...
Kaya Forest, Sierra Rayne
core   +2 more sources

Solvent‐Free Thermal Defect Engineering in Molecular Frameworks With Volatile Linkers

Advanced Materials, EarlyView.
Thermal removal of neutral volatile linkers enables precise and solvent‐free generation of metal vacancies in MOFs. This strategy affords redox‐stable, coordinatively unsaturated FeII sites with tunable spin, ligand coordination, and catalytic behavior. The approach offers a general route to design defect‐functional materials through local coordination
Sonia Martínez‐Giménez, Alejandro Orellana‐Silla, Marta Galbiati, Efrén Navarro‐Moratalla, Luca Braglia, Sara Stolfi, José Antonio Real, Víctor Rubio‐Giménez, Sergio Tatay, Carlos Martí‐Gastaldo   +9 more
wiley   +1 more source

Nanozymes for Energy and Environmental Sustainability

Advanced Science, EarlyView.
At present, the widely used nanozymes are oxidoreductase and hydrolase, which have proved to have great application prospects in energy and environment. ABSTRACT Nanozymes have shown remarkable promise in addressing pressing challenges in energy and environmental sustainability.
Xiaoqi Li, Jinxing Chen, Shaojun Dong
wiley   +1 more source

Semiquantitative Infrared Analysis of Diketones and Anhydrides in a Reaction Mixture [PDF]

, 1976
The ozonolysis of a hydroxymethylene ketone yields a mixture of diketone and anhydride. Treatment of hydroxymethylene camphor with ozone affords, in addition to the expected camphor quinone, a surprisingly large amount of camphoric anhydride (56%) via ...
Getty, R., Lay, J. O., Watson, F. H., Jr., Yang, Dominic T.C.   +3 more
core   +2 more sources

Cloud condensation nucleus (CCN) behavior of organic aerosol particles generated by atomization of water and methanol solutions [PDF]

, 2006
Cloud condensation nucleus (CCN) experiments were carried out for malonic acid, succinic acid, oxalacetic acid, DL-malic acid, glutaric acid, DL-glutamic acid monohydrate, and adipic acid, using both water and methanol as atomization solvents, at three ...
Flagan, R. C., McFiggans, G., Rissman, T. A., Seinfeld, J. H., Surratt, J. D., Topping, D. O., Varutbangkul, V.   +6 more
core   +5 more sources

Synergistic Hydrogen‐Bonding and Covalent Crosslinking in Polybenzimidazole Membranes for Wide‐Temperature Anhydrous Fuel Cells

Advanced Science, EarlyView.
A dual‐network architecture combining a thermally reinforced hydrogen‐bonding matrix with an amine‐anhydride covalent framework was constructed in Tröger's Base (TB)‐functionalized polybenzimidazoles. This design yielded the TBAm‐PBI‐TB membrane with high acid uptake (469.5%), anhydrous conductivity (264.7 mS cm−1), and robust stability.
Junming Dai, Jianming Zhong, Jinpeng Luo, Yuxing Song, Fan Hu, Young Moo Lee, Yongbing Zhuang   +6 more
wiley   +1 more source

Pyrazine-2,3-dicarboxylic acid

Acta Crystallographica Section E Structure Reports Online, 2004
The title compound, C6H4N2O4, is a new unsolvated form of pyrazine-2,3-di­carboxyl­ic acid. The asymmetric unit contains two independent mol­ecules with different geometry. The planes of the carboxyl­ic groups make dihedral angles with the planar pyrazine rings of 22.7 (2) and 50.0 (2)° in one mol­ecule, and 9.7 (2) and 79.1 (2)° in the other.
Thathan Premkumar, Subbiah Govindarajan, Wojciech Starosta, Janusz Leciejewicz   +3 more
openaire   +1 more source

Enhanced Energy Transfer from a Metal–Organic Framework to a Highly Confined Organic Phosphorescent Dye

Advanced Science, EarlyView.
A phosphorescent dye was designed to fit in a hand‐to‐glove fashion into the 1D‐pore channels of MIL‐68(In). We synthesized MIL‐68(In) as powder and thin films, loaded the dye into the pores with controlled packing, and found that the phosphorescence and quantum yield are enhanced.
Bahram Hosseini Monjezi, Thomas Kasper, Gloria Hong, Changfeng Si, Robert Oestreich, Oliver Weingart, Peter G. Weidler, Christof Wöll, Eli Zysman‐Colman, Christoph Janiak, Stefan Bräse, Klaus Müller‐Buschbaum, Alexander Knebel   +12 more
wiley   +1 more source

Biodegradability and biocompatibility of copoly(butylene sebacate-co-terephthalate)s [PDF]

, 2017
In the present study poly (butylene sebacate-co-terephthalate)s having different compositions were synthesized with a high yield and a random distribution by thermal transesterification of poly (butylene sebacate) and poly (butylene terephthalate ...
Faramarz Afshar Taromi, Faramarz Afshar, Franco García, María Lourdes, Heidarzadeh, Nina, Mehdi Rafizadeh, Mehdi, Puiggalí Bellalta, Jordi, Valle Mendoza, Luis Javier del   +5 more
core   +2 more sources