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3 article(s) from Simionescu, Bogdan C

Recent advances in metathesis-derived polymers containing transition metals in the side chain

Ileana Dragutan,
Valerian Dragutan,
Bogdan C. Simionescu,
Albert Demonceau and
Helmut Fischer

Beilstein J. Org. Chem. 2015, 11, 2747–2762, doi:10.3762/bjoc.11.296

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Scheme 1: Synthesis of homopolymers containing ferrocenyl and tetraethylene glycol groups.

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Scheme 2: Synthesis of redox-robust triazolylbiferrocenyl polymers 4.

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Scheme 3: Synthesis of cobaltocenium-containing polymers by ROMP.

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Scheme 4: Cobaltocenium-appending copolymers by the ROMP approach (X = PF₆, Y = BPh₄ or Cl).

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Scheme 5: Cobalt-containing polymers by click and ROMP approach.

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Scheme 6: Synthesis of new cobalt-integrating block copolymers.

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Scheme 7: Two alternative routes for the synthesis of redox-active cobalticenium-tethered polyelectrolytes.

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Scheme 8: Oxanorbornene monomers for the synthesis of Ru-containing polymers by ROMP.

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Scheme 9: ROMP synthesis of Ru-containing homopolymers.

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Scheme 10: Synthesis of diblock copolymers incorporating ruthenium.

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Scheme 11: Synthesis of Ru triblock copolymers.

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Scheme 12: Synthesis of cross-linked Ru-containing triblock copolymers.

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Scheme 13: Synthesis of Ir-containing homopolymers by ROMP.

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Scheme 14: Monomers for Ir- and Os-containing ROMP polymers.

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Scheme 15: ROMP block copolymers integrating Ir in their side chains.

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Scheme 16: Synthesis of Rh-containing block copolymers.

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Scheme 17: Access to rhodocenium-containing metallopolymers by ROMP.

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Scheme 18: Synthesis of homopolymers equipped with Cu coordination centers.

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Scheme 19: Synthesis of Cu-containing copolymers (spacer = –(CH₂)₅–; >C=O).

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Scheme 20: Synthesis of polynorbornene bearing a polyoxometalate (POM) cluster in the side chain.

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Scheme 21: Synthesis of Eu-containing copolymers by a ROMP-based route.

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Review

Published 28 Dec 2015

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A study on electrospray mass spectrometry of fullerenol C₆₀(OH)₂₄

Mihaela Silion,
Andrei Dascalu,
Mariana Pinteala,
Bogdan C. Simionescu and
Cezar Ungurenasu

Beilstein J. Org. Chem. 2013, 9, 1285–1295, doi:10.3762/bjoc.9.145

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Scheme 1: Proposed mechanisms for the formation of fullerenol anions and distonic radical anions observed by ...

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Figure 1: Negative-ion mass spectra for a 0.5 × 10⁻⁵ M solution of C₆₀(OH)₂₄ in ultrapure water: (a) full sca...

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Scheme 2: Examples of proposed structures for the main deprotonated molecules and final distonic molecular io...

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Scheme 3: Proposed (−)ESI-MS ionization mechanisms for fullerenol C₆₀(OH)₂₄ in pure water.

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Figure 2: Negative-ion mass spectra of a 0.5 × 10⁻⁵ M aqueous solution of C₆₀(OH)₂₄ in ammonia solution: (a) ...

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Figure 3: Positive ionization ESI mass spectrum of C₆₀(OH)₂₄ in (a) 3 × 10⁻¹ M (b) 2 × 10⁻² M aqueous ammonia...

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Scheme 4: Proposed (+)ESI-MS ionization mechanisms for fullerenol C₆₀(OH)₂₄ in ammonia solution.

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Full Research Paper

Published 02 Jul 2013

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Polysiloxane ionic liquids as good solvents for β-cyclodextrin-polydimethylsiloxane polyrotaxane structures

Narcisa Marangoci,
Rodinel Ardeleanu,
Laura Ursu,
Constanta Ibanescu,
Maricel Danu,
Mariana Pinteala and
Bogdan C. Simionescu

Beilstein J. Org. Chem. 2012, 8, 1610–1618, doi:10.3762/bjoc.8.184

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Scheme 1: Synthesis of PDMS-Im/Br ionic liquid.

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Figure 1: Appearance of (A) pure PDMS-Im/Br ionic liquid; (B) PDMS-Im/Br ionic liquid containing 1 wt % PRot.

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Figure 2: Wet-STEM images at 30 kV in bright field mode of: PDMS-Im/Br ionic liquid (A,B) and mixture of PDMS...

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Figure 3: Amplitude sweep results for PDMS-Im/Br and PDMS-Im/Br+PRot at 25 °C.

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Figure 4: Storage (G’) and loss (G”) moduli dependence on frequency for PDMS-Im/Br and PDMS-Im/Br+PRot at 25 ...

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Figure 5: Storage (G’) and loss (G”) moduli dependence on temperature for PDMS-Im/Br and PDMS-Im/Br+PRot.

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Figure 6: Flow curves for PDMS-Im/Br and PDMS-Im/Br + PRot at 25 °C.

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Figure 7: Temperature dependence of flow curves for PDMS-Im/Br ionic liquid.

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Figure 8: Temperature dependence of flow curves for PDMS-Im/Br+PRot.

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Figure 9: DSC second heating curves of: (1) PDMS-Im/Br ionic liquid, (2) mixture of PDMS-Im/Br with Prot and ...

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Full Research Paper

Published 24 Sep 2012

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Recent advances in metathesis-derived polymers containing transition metals in the side chain

A study on electrospray mass spectrometry of fullerenol C60(OH)24

Polysiloxane ionic liquids as good solvents for β-cyclodextrin-polydimethylsiloxane polyrotaxane structures

A study on electrospray mass spectrometry of fullerenol C₆₀(OH)₂₄