64 items found

Tags: Biological Sciences not elsewhere classified Chemical Sciences not elsewhere classified Evolutionary Biology keywords.Biochemistry

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  • publication

    Tunability of Supramolecular Kagome Lattices of Magnetic Phthalocyanines Usin...

    Self-assembly of various phthalocyanine (Pc) molecules and a derivative on an epitaxial graphene monolayer (MG) has been investigated by means of in situ ultrahigh vacuum...
  • publication

    Engineering the enolase magnesium II binding site: implications for its evolu...

    The glycolytic enzyme enolase catalyzes the reversible elimination of water from 2-phosphoglycerate (2-PGA) to form phosphoenolpyruvate (PEP). Two magnesium ions in the active...
  • publication

    Modulation of T2 Relaxation Time by Light-Induced, Reversible Aggregation of ...

    A reversible T2 contrast agent consisting of cross-linked anionic dextran coated iron oxide nanoparticles covalently coupled to a light-sensitive spiropyran (SP)/merocyanine...
  • publication

    Solid-Phase Synthesis of Bis-2-imidazolidinethiones from Resin-Bound Tripeptides

    The exhaustive reduction of resin-bound tripeptides with borane afforded three secondary amines and one primary amine. The treatment of the solid-support polyamines with...
  • publication

    Pressure-Induced Amorphization and Porosity Modification in a Metal−Organic F...

    The impact of modest, industrially accessible pressures (0−1.2 GPa) on the structure and porosity of the zeolitic imidazolate framework Zn(2-methylimidazole)2, ZIF-8, was...
  • publication

    How to Design Linear Allenic-Type Trisilaallenes and Trigermaallenes

    A theoretical prescription as to how to design allenic-type linear trisilaallenes and trigermaallenes is provided. Until now, all of the heavier group − 14 analogues of allene...
  • publication

    Rational Design of Cavitand Receptors for Mass Sensors

    This Communication describes a rational approach to the fabrication of selective mass sensors, using multiple hydrogen-bonding type interactions encoded in a single cavitand...
  • publication

    Total Synthesis of (±)-Chartelline C

    The first total synthesis of (±)-chartelline C in a concise 10-step sequence is reported. Highlights of the completion of this decades-old puzzle include (1) chemo- and...
  • publication

    Au@ZIF-8: CO Oxidation over Gold Nanoparticles Deposited to Metal−Organic Fra...

    Gold nanoparticles (NPs) were deposited to a zeolite-type metal−organic framework (MOF) by a simple solid grinding method. A catalyst, Au@ZIF-8, represents the first example of...
  • publication

    Stereospecific Deoxygenation of Phosphine Oxides with Retention of Configurat...

    A new protocol for deoxygenation of various phosphine oxides with retention of configuration is described. The advantage of the new method includes milder conditions and...
  • publication

    High-Precision Catalysts: Regioselective Hydroformylation of Internal Alkenes...

    We report the formation of high-precision catalysts using encapsulated rhodium complexes. In the current example, the encapsulated rhodium catalyst shows unprecedented high...
  • publication

    Spectroscopy and Electrochemistry of Ruthenium-Modified Nucleic Acids: Design...

    Electron transfer (ET) reactions through DNA have been the subject of numerous investigations due to the implications for light-induced DNA damage and the quest for...
  • publication

    Synthesis of (−)-Sedinine by Allene Cyclization and Iminium Ion Chemistry

    A synthesis of the sedum alkaloid sedinine has been achieved employing silver(I)-catalyzed allenic hydroxylamine cyclization and ring-closing metathesis to form a bicyclic...
  • publication

    Highly Porous and Robust 4,8-Connected Metal−Organic Frameworks for Hydrogen ...

    Highly porous and robust metal−organic frameworks (MOFs) were constructed based on aromatics-rich octa-carboxylate ligands and copper paddle-wheel building units. Each...
  • publication

    A Selective and Sensitive Fluoroionophore for HgII, AgI, and CuIIwith Virtual...

    A Selective and Sensitive Fluoroionophore for HgII, AgI, and CuII with Virtually Decoupled Fluorophore and Receptor Units
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    Coordination Copolymerization of Severely Encumbered Isoalkenes with Ethylene...

    This contribution describes the implementation of the binuclear organotitanium “constrained geometry catalysts” (CGCs),...
  • publication

    Antiaromaticity in Distal Bisfluorenyl Dications Separated by Multiple Discre...

    The effect of spacers on the antiaromaticity of bisfluorenyl dications was examined. For systems such as 4a−c in which extensive delocalization of the positive charge through...
  • publication

    Responsive Periodic Mesoporous Polydiacetylene/Silica Nanocomposites

    Responsive PMO materials have been synthesized through co-assembly of bridged diacetylenic silsesquioxane and surfactant. The spatially defined polydiacetylenic component,...
  • publication

    Caged Progesterone: A New Tool for Studying Rapid Nongenomic Actions of Proge...

    Ketalization of the biomolecule progesterone with (6-bromo-7-hydroxycoumarin-4-yl)ethane-1,2-diol gives the photolabile progesterone derivatives 3 and 4. These compounds display...
  • publication

    Intermolecular C−H Bond Activation Reactions Promoted by Transient Titanium A...

    The neopentylidene−neopentyl complex (PNP)TiCHtBu(CH2tBu) (2; PNP- = N[2-P(CHMe2)2-4-methylphenyl]2), prepared from the precursor (PNP)TiCHtBu(OTf) (1) and LiCH2tBu, extrudes...