Macromolecular Chemistry and Physics

Cover image for Vol. 214 Issue 4

February 25, 2013

Volume 214, Issue 4

Pages 409–516

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      Macromol. Chem. Phys. 4/2013 (page 409)

      Sahika Inal, Jonas D. Kölsch, Leonardo Chiappisi, Mario Kraft, Andrea Gutacker, Dietmar Janietz, Ullrich Scherf, Michael Gradzielski, André Laschewsky and Dieter Neher

      Version of Record online: 14 FEB 2013 | DOI: 10.1002/macp.201370012

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      Front Cover: Within the mixed aggregates of a dye labeled thermoresponsive copolymer and a conjugated polycation, efficient energy transfer results in strong polyelectrolyte emission. Upon phase transition, formation of large aggregates with local segregation of the two macromolecules leads to almost complete recovery of donor fluorescence intensity. Further details can be found in the article by S. Inal, J. D. Kölsch, L. Chiappisi, M. Kraft, A. Gutacker, D. Janietz, U. Scherf, M. Gradzielski, A. Laschewsky,* and D. Neher* on page 435.

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    1. Macromol. Chem. Phys. 4/2013

      Version of Record online: 14 FEB 2013 | DOI: 10.1002/macp.201370013

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      Macromol. Chem. Phys. 4/2013 (pages 411–414)

      Version of Record online: 14 FEB 2013 | DOI: 10.1002/macp.201370014

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    1. Renewable Polyols for Polyurethane Synthesis via Thiol-ene/yne Couplings of Plant Oils (pages 415–422)

      Gerard Lligadas

      Version of Record online: 26 NOV 2012 | DOI: 10.1002/macp.201200582

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      Nowadays, the utilization of chemicals derived from renewable feedstock is in the spotlight of the polymeric industry. Plant oils and derivatives are important platform chemicals due to their amazing chemical versatility. Herein, these materials together with thiol-ene/yne couplings are presented as a perfect ecofriendly combination to prepare hydroxyl building blocks for polyurethane technology.

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    1. On the Importance of Accurate Internal Temperature Measurements in the Microwave Dielectric Heating of Viscous Systems and Polymer Synthesis (pages 423–434)

      Stephan Hayden, Markus Damm and C. Oliver Kappe

      Version of Record online: 22 NOV 2012 | DOI: 10.1002/macp.201200449

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      Stirring is Everything: If reaction mixtures under microwave conditions cannot be stirred properly, monitoring of reaction temperature is troublesome and can lead to erroneous conclusions. This is of particular importance for the synthesis of polymers, which often involves highly viscous reaction mixtures that cannot easily be stirred/agitated.

    2. Temperature-Regulated Fluorescence Characteristics of Supramolecular Assemblies Formed By a Smart Polymer and a Conjugated Polyelectrolyte (pages 435–445)

      Sahika Inal, Jonas D. Kölsch, Leonardo Chiappisi, Mario Kraft, Andrea Gutacker, Dietmar Janietz, Ullrich Scherf, Michael Gradzielski, André Laschewsky and Dieter Neher

      Version of Record online: 12 DEC 2012 | DOI: 10.1002/macp.201200493

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      A non-ionic dye-labeled thermoresponsive polymer forms mixed aggregates with a cationic conjugated polyelectrolyte in aqueous solutions at room temperature. The interactions between the two macromolecules are temperature regulated, visualized as a distinct fluorescent response resulting from the marked change in energy-transfer efficiency. This scheme shall be applicable to biochemical sensors due to the well-resolved optical visualization of the stimuli-sensitive macromolecular association.

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      Macromol. Chem. Phys. 4/2013 (page 446)

      Version of Record online: 14 FEB 2013 | DOI: 10.1002/macp.201370015

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      This issue of Macromolecular Chemistry and Physics contains articles of the Special Series “New Frontiers in Functional Polymers”.

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    1. Thermochromic and Photovoltaic Properties of an Alternating Copolymer of Dithieno[3,2-b:2′,3′-d]thiophene and Thieno[3,4-c]pyrrole-4,6-dione (pages 447–452)

      Zhao Li, Patrick Malenfant, Ye Tao and Jianfu Ding

      Version of Record online: 11 DEC 2012 | DOI: 10.1002/macp.201200468

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      A new alternating conjugated polymer, PDTTTPD, based on electron-rich dithieno[3,2-b:2′,3′-d]thiophene (DTT) and electron-deficient thieno[3,4-c]pyrrole-4,6-dione (TPD) building blocks is designed and synthesized. PDTTTPD shows strong thermochromic effect in chlorobenzene solution and modest PCE of 2.1% in organic solar cell devices due to the steric hindrance induced twisting of the conjugated main chain. A general design rule is then suggested to control the main chain conformation of polymer materials for photovoltaic applications.

    2. Accessing New DPP-Based Copolymers by Direct Heteroarylation Polymerization (pages 453–457)

      Jean-Rémi Pouliot, Lauren G. Mercier, Samuel Caron and Mario Leclerc

      Version of Record online: 29 NOV 2012 | DOI: 10.1002/macp.201200573

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      The direct heteroarylation polymerization methodology is adapted for the diketopyrrolopyrrole moiety, giving rise to copolymers that are difficult to obtain from standard Stille or Suzuki couplings. These new low-bandgap polymers prove to be efficient electron-transporting materials enabling possible applications in all-plastic solar cells.

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    1. Syntheses and Properties of Novel Copolymers of Poly(1,4-dioxane-2-one) and Aliphatic Polycarbonate Based on Ketal-Protected Dihydroxyacetone (pages 458–463)

      Lian-Sheng Wang, Si-Xue Cheng and Ren-Xi Zhuo

      Version of Record online: 3 DEC 2012 | DOI: 10.1002/macp.201200525

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      Novel random copolymers are synthesized in bulk by ring-opening polymerization of 1,4-dioxane-2-one (DON) and 2,2-ethylenedioxy propane-1,3-diol carbonate (EOPDC). The obtained copolymers are characterized by Fourier transform IR (FTIR), 1H NMR, and 13C NMR spectroscopy, gel-permeation chromatography (GPC), and DSC. The hydrolytic degradation and drug controlled-release properties of the copolymer are fine-tuned through changing the ratio of DON and EOPDC.

    2. Temperature-Responsiveness and Antimicrobial Properties of CNT–PNIPAM Hybrid Brush Films (pages 464–469)

      Katrina D. Pangilinan, Catherine M. Santos, Nicel C. Estillore, Debora F. Rodrigues and Rigoberto C. Advincula

      Version of Record online: 11 DEC 2012 | DOI: 10.1002/macp.201200464

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      Carbon nanotubes incorporated via layer-by-layer assembly in ultra-thin films with temperature-sensitive polymer brushes exhibit unique antibacterial properties tunable with temperature. These hybrid films are useful for actively preventing biofilm formation at various temperature conditions and can be employed as smart coatings.

    3. Dibromomaleimide Derivative as an Efficient Polymer Coupling Agent for Building Topological Polymers (pages 470–477)

      Yi Cui, Yechao Yan, Yongming Chen and Zhaohui Wang

      Version of Record online: 29 NOV 2012 | DOI: 10.1002/macp.201200614

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      Thiol-terminated synthetic polymer chains may be dimerized by a dibromomaleimide derivative via an efficient substituent reaction. The new polymer bearing an alkyl bromide is further applied for coupling another polymer by click reaction to form star polymers.

    4. High-Performance Photorefractive Composite Based on Non-conjugated Main-Chain, Hole-Transporting Polymer (pages 478–485)

      In Kyu Moon, Jongwan Choi and Nakjoong Kim

      Version of Record online: 13 DEC 2012 | DOI: 10.1002/macp.201200638

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      A new type of polymeric photorefractive composite based on a hole-transporting polymer is prepared and characterized. This composite shows high internal photocurrent efficiency and excellent photorefractivity.

    5. Novel Inorganic Proton-Conducting Graft Copolymers Based on 4-Vinyl Benzene Boronic Acid and Vinyl Phosphonic Acid (pages 486–491)

      Sevim Ünügür Çelik and Ayhan Bozkurt

      Version of Record online: 23 NOV 2012 | DOI: 10.1002/macp.201200434

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      Novel copolymers of 4-vinyl benzene boronic acid (VBBA) and vinyl phosphonic acid (VPA) are synthesized and grafted with polyethylene glycol methyl ether. After grafting, the flexibility of the side chains increases the anhydrous proton conductivity of the copolymers at least five orders of magnitude.

    6. Ruthenium Ring-Opening Metathesis Polymerization Catalysts Bearing o- Aryloxide-N-Heterocyclic Carbenes (pages 492–498)

      Yong Kong, Yungang Tang, Zunzhi Wang, Shansheng Xu, Haibin Song and Baiquan Wang

      Version of Record online: 23 NOV 2012 | DOI: 10.1002/macp.201200509

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      A series of o-aryloxide-NHC Ru-benzene complexes 2–4 is prepared and applied for the ring-opening metathesis polymerization (ROMP) of norbornene (NBE). Among them, complex 4 exhibits the highest activity toward ROMP of NBE at 85 °C without any cocatalyst, and the resultant polymers have very high Mw (>106 Da) and narrow molecular weight distributions. This complex can also catalyze the alternating copolymerization of NBE and cyclooctene.

    7. Thermal-Induced Transformation of Polydopamine Structures: An Efficient Route for the Stabilization of the Polydopamine Surfaces (pages 499–507)

      Vladimír Proks, Jiří Brus, Ognen Pop-Georgievski, Eva Večerníková, Waldemar Wisniewski, Jiří Kotek, Matrina Urbanová and František Rypáček

      Version of Record online: 23 JAN 2013 | DOI: 10.1002/macp.201200505

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      The long-term stability of polydopamine–poly(ethylene oxide) surfaces can be positively improved through thermal annealing of the polydopamine layer before poly(ethylene oxide) grafting. This presented work is focused on elucidating the changes in polydopamine structure/constitution induced by thermal treatment.

    8. Photo-Cured Epoxy Networks Functionalized With Fe3O4 Generated by Non-hydrolytic Sol–Gel Process (pages 508–516)

      Marco Sangermano, Paolo Allia, Paola Tiberto, Gabriele Barrera, Federica Bondioli, Nicola Florini and Massimo Messori

      Version of Record online: 28 NOV 2012 | DOI: 10.1002/macp.201200494

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      Magnetite nanoparticle suspensions in benzyl alcohol are prepared by a non-hydrolytic sol–gel process and are photo-polymerized with an aliphatic epoxy resin. The epoxy-based composites with in-situ-generated magnetite nanoparticles are found to have unusual magnetic properties.

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