E-Mail Alert

Add your e-mail address to receive forthcoming issues of this journal:

Journal Browser

Journal Browser

Special Issue "New Polymer Synthesis Reactions"

Quicklinks

A special issue of Polymers (ISSN 2073-4360).

Deadline for manuscript submissions: closed (15 January 2011)

Special Issue Editor

Guest Editor
Prof. Dr. Klaus Müllen (Website)

Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
Fax: +49 6131 379 350
Interests: new polymer-forming reactions including methods of organometallic chemistry; multi-dimensional polymers with complex shape-persistent architectures; functional polymeric networks, in particular for catalytic purposes; dyes and laser writing into polymers; chemistry and physics of single molecules; molecular materials with liquid crystalline properties for electronic and optoelectronic devices; materials for lithium or hydrogen storage; biosynthetic hybrids; nanocomposites

Published Papers (2 papers)

View options order results:
result details:
Displaying articles 1-2
Export citation of selected articles as:

Research

Open AccessArticle Spectroscopic Investigation of Composite Polymeric and Monocrystalline Systems with Ionic Conductivity
Polymers 2011, 3(2), 674-692; doi:10.3390/polym3020674
Received: 10 January 2011 / Revised: 1 March 2011 / Accepted: 23 March 2011 / Published: 24 March 2011
Cited by 3 | PDF Full-text (955 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The conductivity mechanism is studied in the LiCF3SO3-doped polyethylene oxide by monitoring the vibrations of sulfate groups and mobility of Li+ ion along the polymeric chain at different EO/Li molar ratios in the temperature range from 16 to 90 °С. At the high EO/Li ratio (i.e., 30), the intensity of bands increases and a triplet appears at 1,045 cm−1, indicating the presence of free anions, ionic pairs and aggregates. The existence of free ions in the polymeric electrolyte is also proven by the red shift of bands in Raman spectra and a band shift to the low frequency Infra-red region at 65 < T < 355 °С. Based on quantum mechanical modeling, (method MNDO/d), the energies (minimum and maximum) correspond to the most probable and stable positions of Li+ along the polymeric chain. At room temperature, Li+ ion overcomes the intermediate state (minimum energy) through non-operating transitions (maximum energy) due to permanent intrapolymeric rotations (rotation of C, H and O atoms around each other). In solid electrolyte (Li2SO4) the mobility of Li+ ions increases in the temperature range from 20 to 227 °С, yielding higher conductivity. The results of the present work can be practically applied to a wide range of compact electronic devices, which are based on polymeric or solid electrolytes. Full article
(This article belongs to the Special Issue New Polymer Synthesis Reactions)
Open AccessArticle Reusable Polymer-Supported Terpyridine Palladium Complex for Suzuki-Miyaura, Mizoroki-Heck, Sonogashira, and Tsuji-Trost Reaction in Water
Polymers 2011, 3(1), 621-639; doi:10.3390/polym3010621
Received: 10 January 2011 / Revised: 8 February 2011 / Accepted: 9 March 2011 / Published: 14 March 2011
Cited by 18 | PDF Full-text (682 KB) | HTML Full-text | XML Full-text
Abstract
A novel heterogeneous transition-metal catalyst comprising a polymer-supported terpyridine palladium(II) complex was prepared and found to promote the Suzuki-Miyaura, Mizoroki-Heck, Sonogashira, and Tsuji-Trost, reactions in water under aerobic conditions with a high to excellent yield. The catalyst was recovered by simple filtration [...] Read more.
A novel heterogeneous transition-metal catalyst comprising a polymer-supported terpyridine palladium(II) complex was prepared and found to promote the Suzuki-Miyaura, Mizoroki-Heck, Sonogashira, and Tsuji-Trost, reactions in water under aerobic conditions with a high to excellent yield. The catalyst was recovered by simple filtration and directly reused several times without loss of catalytic activity. Full article
(This article belongs to the Special Issue New Polymer Synthesis Reactions)
Figures

Journal Contact

MDPI AG
Polymers Editorial Office
St. Alban-Anlage 66, 4052 Basel, Switzerland
polymers@mdpi.com
Tel. +41 61 683 77 34
Fax: +41 61 302 89 18
Editorial Board
Contact Details Submit to Polymers
Back to Top