Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Megan E. Fieser"'
Autor:
Zachary A. Wood, Megan E. Fieser
Publikováno v:
Polymer Chemistry. 14:821-827
One-pot synthesis of random, gradient, and block polyesters via the ring opening copolymerization of epoxides and cyclic anhydrides is investigated using simple yttrium salt catalysts. Impact of rate versus product determining steps is discussed.
Publikováno v:
ChemCatChem.
Publikováno v:
Materials Horizons.
Reactions of poly(vinyl chloride) (PVC) with a rhodium catalyst and H-donors reveal how reaction conditions can impact the selectivity for chloride removal, with sodium formate showing the highest selectivity for hydrodechlorination.
Publikováno v:
RSC Sustainability.
Lanthanide metal ionic liquids (MILs) are tunable catalysts for the glycolysis of poly(ethylene terephthalate). Enhanced cooperativity with high ionic liquid : metal salt ratios lowers the required metal content to increase catalyst sustainability.
Publikováno v:
Chemical Science. 13:9515-9524
The one-pot synthesis of well-defined block copolymers of olefins/1,3-dienes and polar monomers, such as cyclic esters and acrylates has long been the focus of intense research. Cationic alkyl rare earth metal catalysts, activated by organoborates, h
Publikováno v:
Inorganic chemistry. 61(18)
Monometallic yttrium β-diketiminate complexes are active and controlled catalysts for perfectly alternating ring-opening copolymerization of 1-butene oxide and phthalic anhydride under mild conditions. β-Diketiminate ligands with pendant neutral do
Autor:
Zachary A. Wood, Sophia C. Kosloski-Oh, Juan Pablo de los Rios, Megan E. Fieser, Yvonne Manjarrez
Publikováno v:
Materials Horizons. 8:1084-1129
Polymers (plastics) have transformed our lives by providing access to inexpensive and versatile materials with a variety of useful properties. While polymers have improved our lives in many ways, their longevity has created some unintended consequenc
Autor:
Megan E. Fieser, Wolfgang Hieringer, Vamsee K. Voora, William J. Evans, Karsten Meyer, Dominik P. Halter, Guo P. Chen, Alan K. Chan, Chad T. Palumbo, Filipp Furche, Joseph W. Ziller
Publikováno v:
Inorganic Chemistry. 57:2823-2833
The synthesis of 4f n Ln3+ complexes of the tris(aryloxide) mesitylene ligand, ((Ad,MeArO)3mes)3-, with Ln = La, Ce, Pr, Sm, and Yb, and their reduction with potassium have revealed that this ligand system can be redox active with some metals. Proton
Publikováno v:
Organometallics. 36:3721-3728
The Ln2+ complexes [K(2.2.2-cryptand)][Cp′3Ln] (Ln = La, Ce, Pr, Nd, Sm, Eu, Dy, Tm, Yb; Cp′ = C5H4SiMe3) were reacted with 1,3,5,7-cyclooctatetraene, C8H8, to determine if the reactivity of the complexes of 4fn+1 ions differed from that of 4fn5d
Autor:
Juan S. Lezama Pacheco, Gregory L. Wagner, Enrique R. Batista, David H. Woen, Jing Su, Austin J. Ryan, Maryline G. Ferrier, Stosh A. Kozimor, Samantha K. Cary, Jonathan W. Engle, Tonya Vitova, Benjamin W. Stein, Ping Yang, Angela C. Olson, William J. Evans, Megan E. Fieser
Publikováno v:
Chemical Science. 8:6076-6091
The isolation of [K(2.2.2-cryptand)][Ln(C5H4SiMe3)3], formally containing LnII, for all lanthanides (excluding Pm) was surprising given that +2 oxidation states are typically regarded as inaccessible for most 4f-elements. Herein, X-ray absorption nea