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COOPERATIVE HYDROGEN-BONDING OF THE ADENINE-THYMINE PAIR AS A STRATEGY FOR LOWERING THE LIMIT OF DETECTION OF THYMINE BY SURFACE-ENHANCED RAMAN SPECTROSCOPY

26-Apr-2016 | Mónica Benicia Mamián-López; Paola Corio; Marcia Temperini, Analyst, 2016

The formation of cooperative hydrogen bonds between the thymine-adenine pair was used to indirectly determine thymine in aqueous solution by Surface-enhanced Raman Spectroscopy (SERS), therefore improving the limit of detection (LOD) values up to two orders of magnitude. The concentration of ...

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Syntheses, Structures and Optoelectronic Properties of Spiroconjugated Cyclic Ketones

25-Apr-2016 | Jennifer Wilbuer, Gregor Schnakenburg, Birgit Esser, European Journal of Organic Chemistry, 2016

Abstract Synthetic investigations towards spiroconjugated ketones and derivatives thereof are presented. These studies led to the development of a short procedure for the synthesis of spiroconjugated tetraketone 1 in two steps with 10 % overall yield and the first‐time synthesis of spirocyclic ...

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Rate of reaction of the hydrogen atom with nitrous oxide in ambient water

24-Apr-2016 | Author(s): Lukasz Kazmierczak, Dorota Swiatla-Wojcik, Joanna Szala-Bilnik, Marian Wolszczak, Radiation Physics and Chemistry, 2016

Publication date: August 2016 Source:Radiation Physics and Chemistry, Volume 125 Author(s): Lukasz Kazmierczak, Dorota Swiatla-Wojcik, Joanna Szala-Bilnik, Marian Wolszczak The reaction of the hydrogen atom with nitrous oxide has been investigated by pulse radiolysis of ...

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Long-Range Vibrational Dynamics Are Directed by Watson–Crick Base Pairing in Duplex DNA

22-Apr-2016 | Gordon Hithell; Daniel J. Shaw; Paul M. Donaldson; Gregory M. Greetham; Michael Towrie; Glenn A. Burley; Anthony W. ..., Journal of Physical Chemistry B, 2016

Ultrafast two-dimensional infrared (2D-IR) spectroscopy of a 15-mer A–T DNA duplex in solution has revealed structure-dependent vibrational coupling and energy transfer processes linking bases with the sugar–phosphate backbone. Duplex melting induces significant changes in the positions of ...

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Acyliridium(III) Complexes with PCN Terdentate Ligands Including Imino‐ or Iminium‐Acyl Moieties or Formation of Hydrido from Hydroxyl (Eur. J. Inorg. Chem. 12/2016)

21-Apr-2016 | Itziar Zumeta, Claudio Mendicute‐Fierro, Antonio Rodríguez‐Diéguez, José M. Seco, María A. Garralda, European Journal of Inorganic Chemistry, 2016

The cover picture shows an anionic dihydridoiridium species formed in methanol from a dihydridoirida‐β‐diketone in the presence of KOH and hydrogen release from the dihydrido species upon addition of 2‐aminoalkylpyridines to the solution. Hydrogen is transferred from hydroxyl in the solvent to ...

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Acyliridium(III) Complexes with PCN Terdentate Ligands Including Imino‐ or Iminium‐Acyl Moieties or Formation of Hydrido from Hydroxyl

21-Apr-2016 | Itziar Zumeta, Claudio Mendicute‐Fierro, Antonio Rodríguez‐Diéguez, José M. Seco, María A. Garralda, European Journal of Inorganic Chemistry, 2016

Abstract Invited for the cover of this issue is the group of María A. Garralda at Universidad del País Vasco, San Sebastián, Spain. The cover image shows an anionic dihydridoiridium species formed in methanol from a dihydridoirida‐β‐diketone and hydrogen release from the dihydrido species upon ...

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Synergistic effect of cellulose nanowhiskers reinforcement and dicarboxylic acids crosslinking towards polyvinyl alcohol properties

21-Apr-2016 | Amit Kumar Sonker, Naveen Tiwari, Rajaram Krishna Nagarale, Vivek Verma, Journal of Polymer Science Part A: Polymer Chemistry, 2016

ABSTRACT In the presented work, a significant increase in the tensile strength of the PVA composite material is reported. The obtained best value of 122 MPa and 14.6% swelling shows the excellent synergistic effect of both crosslinker and reinforcement material. The composite films were ...

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Uncovering Intramolecular π‐Type Hydrogen Bonds in Solution by NMR Spectroscopy and DFT Calculations

21-Apr-2016 | Piero Mastrorilli, Vito Gallo, Stefano Todisco, Mario Latronico, Giacomo Saielli, Chemistry - A European Journal, 2016

Abstract Reaction between the phosphinito bridged diplatinum species [(PHCy2)Pt(μ‐PCy2){κ2P,O‐μ‐P(O)Cy2}Pt(PHCy2)](Pt–Pt) (1), and (trimethylsilyl)acetylene at 273 K affords the σ‐acetylide complex [(PHCy2)(η1‐Me3SiC≡C)Pt(μ‐PCy2)Pt(PHCy2){κP‐P(OH)Cy2}](Pt–Pt) (2) featuring an intramolecular ...

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Hierarchical Integration of Photosensitizing Metal–Organic Frameworks and Nickel‐Containing Polyoxometalates for Efficient Visible‐Light‐Driven Hydrogen Evolution

20-Apr-2016 | Xiang‐Jian Kong, Zekai Lin, Zhi‐Ming Zhang, Teng Zhang, Wenbin Lin, Angewandte Chemie International Edition, 2016

Abstract Metal–organic frameworks (MOFs) provide a tunable platform for hierarchically integrating multiple components to effect synergistic functions that cannot be achieved in solution. Here we report the encapsulation of a Ni‐containing polyoxometalate (POM) [Ni4(H2O)2(PW9O34)2]10− (Ni4P2) ...

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Amphoteric Aqueous Hafnium Cluster Chemistry

20-Apr-2016 | Sara Goberna‐Ferrón, Deok‐Hie Park, Jenn M. Amador, Douglas A. Keszler, May Nyman, Angewandte Chemie International Edition, 2016

Abstract Selective dissolution of hafnium‐peroxo‐sulfate films in aqueous tetramethylammonium hydroxide enables extreme UV lithographic patterning of sub‐10 nm HfO2 structures. Hafnium speciation under these basic conditions (pH>10), however, is unknown, as studies of hafnium aqueous chemistry ...

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