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Special Issue "Functional Materials- From Functional Hybrid Materials to Functional Polymers"

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A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Material Sciences and Nanotechnology".

Deadline for manuscript submissions: closed (1 June 2008)

Special Issue Editors

Guest Editor
Prof. Dr. Helmut Rosemeyer

Organic Materials Chemistry - Bioorganic Chemistry, Institute of Chemistry, University of Osnabrück, Barbarastr. 7, 49069 Osnabrück, Germany
Website | E-Mail
Phone: 00495419692789
Fax: +49 (0)541 969 2370
Interests: nucleosides; nucleotides; nucleic acids; nucleolipids; nucleolipoplexes
Guest Editor
Prof. Dr. Andreas Taubert

Institute of Chemistry, University of Potsdam, Building 26, Rm. 2.64, Karl-Liebknecht-Str. 24-25, D-14476 Golm, Germany
Website | E-Mail
Fax: +49 331 977 5055
Interests: inorganic materials synthesis in ionic liquids; functional ionic liquids-hybrid materials; self-assembling polymers, peptides & nanoparticles; calcium phosphate materials; silica hybrid materials; iron oxide materials; metal-peptide frameworks; materials for metallic implants

Special Issue Information

Dear Colleagues,

Research and development of novel functional hybrid materials and nanocomposites with extraordinary functionalities has become one of the most expanding fields in materials chemistry during recent years. One reason for this is that this class of research bridges various scientific disciplines. In an interdisciplinary manner, inorganic and organic chemistry, physical and biological sciences are united in the search for novel methods to create unique materials. The compounds formed often possess exciting new properties for future functional meterials and technological applications. The forthcoming special issues of the "International Journal of Molecular Sciences" shall meet the requirements for an actual overview over this most interesting research discipline.

Prof. Dr. Helmut Rosemeyer
Guest Editor

Leading Papers and Reviews

  1. Hybrid Materials - Synthesis, Characteriztion and Applications; Kickelbick, G., Ed.; Wiley-VCH: Weinheim, 2007.
  2. Rao, C.N.R.; Müller, A.; Cheetham, A.K. The Chemistry of Nanomaterials, Synthesis; Properties and Applications; Wiley-VCH: Weinheim, 2004; Vol. 1 and 2.
  3. Nanofabrication Towards Biomedical Applications, Techniques, Tools, Applications and Impact; Challa, S.S.; Kumar, R.; Hormes, J.; Leuschner C., Eds.; Wiley-VCH: Weinheim, 2005
  4. Functional Hybrid Materials; Gomez-Romero, P.; Sanchez, C., Eds.; Wiley-VCH: Weinheim, 2004
  5. Bioelectronics, From Theory to Applications; Willner, I.; Katz, E.,Eds.; Wiley-VCH: Weinheim, 2005
  6. Nanobiotechnology, Concepts, Applications and Perspectives; Niemeyer, C.M.; Mirkin, C.A., Eds.; Wiley-VCH: Weinheim, 2004
  7. Rosemeyer, H. Nucleolipids: Natural Occurrence, Synthesis, Molecular Recognition, and Supramolecular Assemblies as Potential Precursors of Life and Bioorganic Materials. Chemistry & Biodiversity, 2005, 2, 977-1063.
  8. Storhoff, J.J.; Mirkin, C.A. Programmed Materials Synthesis with DNA. Chem. Rev. 1999, 99, 1849-1862.

Keywords

  • nano-structured hybrid organic-inorganic materials
  • conducting organic polymers
  • sensors and biosensors
  • self-assembling low-molecular weight molecules
  • polymers in medicine
  • characterisation of nanoparticles
  • natural and artificial hybrid biomaterials
  • medical, optical, electronic, and electrochemical applications of hybrid materials
  • self-disinfecting surfaces
  • hydro- and organogelators.

Published Papers (5 papers)

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Research

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Open AccessArticle A Novel Co-polymer Based on Hydroxypropyl α-Cyclodextrin Conjugated to Low Molecular Weight Polyethylenimine as an in Vitro Gene Delivery Vector
Int. J. Mol. Sci. 2008, 9(11), 2278-2289; doi:10.3390/ijms9112278
Received: 31 May 2008 / Revised: 4 November 2008 / Accepted: 7 November 2008 / Published: 21 November 2008
Cited by 12 | PDF Full-text (578 KB) | HTML Full-text | XML Full-text
Abstract
A novel co-polymer based on 2-hydroxypropyl-α-cyclodextrin cross-linked by low molecular weight polyethylenimine was synthesized as a gene delivery vector. The copolymer could bind and condense DNA tightly. It showed lower cytotoxicity than PEI 25kDa in SK-BR-3 cells. Transfection efficiency was increased over 5.5-fold
[...] Read more.
A novel co-polymer based on 2-hydroxypropyl-α-cyclodextrin cross-linked by low molecular weight polyethylenimine was synthesized as a gene delivery vector. The copolymer could bind and condense DNA tightly. It showed lower cytotoxicity than PEI 25kDa in SK-BR-3 cells. Transfection efficiency was increased over 5.5-fold higher than PEI 25 kDa in SK-BR-3 cells in complete serum medium. It is a potential candidate vector for gene therapy. Full article
Open AccessArticle Supramolecular Layer-by-Layer Assembly of 3D Multicomponent Nanostructures via Multivalent Molecular Recognition
Int. J. Mol. Sci. 2008, 9(4), 486-497; doi:10.3390/ijms9040486
Received: 8 February 2008 / Revised: 26 March 2008 / Accepted: 31 March 2008 / Published: 4 April 2008
Cited by 25 | PDF Full-text (4010 KB) | HTML Full-text | XML Full-text
Abstract
The supramolecular layer-by-layer assembly of 3D multicomponent nanostructures of nanoparticles is demonstrated. Nanoimprint lithography (NIL) was used as the patterning tool for making patterned β-cyclodextrin (CD) self-assembled monolayers (SAMs) and for the confinement of nanoparticles on the substrate. A densely packed and multilayered
[...] Read more.
The supramolecular layer-by-layer assembly of 3D multicomponent nanostructures of nanoparticles is demonstrated. Nanoimprint lithography (NIL) was used as the patterning tool for making patterned β-cyclodextrin (CD) self-assembled monolayers (SAMs) and for the confinement of nanoparticles on the substrate. A densely packed and multilayered nanoparticle structure was created by alternating assembly steps of complementary guest- (Fc-SiO2, 60 nm) and host-functionalized (CD-Au, 3 nm) nanoparticles. The effects induced by the order of the nanoparticle assembly steps, going from large to small and from small to large nanoparticles by using Fc-SiO2, CD-Au, and CD-SiO2 (350 nm) nanoparticles, were compared. AFM height profiles revealed that the specific supramolecular assembly of nanoparticles was self-limited, i.e. one nanoparticle layer per assembly step, allowing the control over the thickness of the supramolecular hybrid nanostructure by choosing the size of the nanoparticles, irrespective of the core material of the nanoparticles. The roughness of structure, observed by AFM imaging of the top layer, was directly influenced by the size and packing of the underlying nanoparticle layers. Full article
Open AccessArticle Synthesis and Characterization of Polyacetylene with Side-chain Thiophene Functionality
Int. J. Mol. Sci. 2008, 9(3), 383-393; doi:10.3390/ijms9030383
Received: 30 November 2007 / Revised: 30 January 2008 / Accepted: 29 February 2008 / Published: 18 March 2008
Cited by 10 | PDF Full-text (603 KB) | HTML Full-text | XML Full-text
Abstract
A new polyacetylene derivative with electroactive thiophene substituent, namely poly(2-methylbut-2-enyl thiophene-3-carboxylate) was synthesized and characterized. For this purpose, novel acetylene monomer was synthesized by the reaction of 3- thiophenecarboxylic acid with propargyl bromide and polymerized with a Rh catalyst to give the corresponding
[...] Read more.
A new polyacetylene derivative with electroactive thiophene substituent, namely poly(2-methylbut-2-enyl thiophene-3-carboxylate) was synthesized and characterized. For this purpose, novel acetylene monomer was synthesized by the reaction of 3- thiophenecarboxylic acid with propargyl bromide and polymerized with a Rh catalyst to give the corresponding polymer. The chemical structure of the polymer was characterized to comprise the conjugated backbone and electroactive thiophene side group. UV spectral changes of the polymer with temperature were also studied. The polymer exhibited better thermal stability than the unsubstituted polyacetylenes. Full article
Open AccessArticle Noncovalently Modified Carbon Nanotubes with Carboxymethylated Chitosan: A Controllable Donor-Acceptor Nanohybrid
Int. J. Mol. Sci. 2008, 9(2), 120-130; doi:10.3390/ijms9020120
Received: 4 January 2008 / Accepted: 31 January 2008 / Published: 5 February 2008
Cited by 19 | PDF Full-text (475 KB) | HTML Full-text | XML Full-text
Abstract
We report here the modification of multiwalled carbon nanotubes (MWNTs) with a kind of polysaccharide, carboxymethylated chitosan (cmCs), and their potential usage as donor-acceptor nanohybrids. The modified composites (cmCs/MWNTs) were characterized by high-resolution TEM, FT-IR, TGA and time-resolved spectroscopy. The time-resolved spectroscopic experiments
[...] Read more.
We report here the modification of multiwalled carbon nanotubes (MWNTs) with a kind of polysaccharide, carboxymethylated chitosan (cmCs), and their potential usage as donor-acceptor nanohybrids. The modified composites (cmCs/MWNTs) were characterized by high-resolution TEM, FT-IR, TGA and time-resolved spectroscopy. The time-resolved spectroscopic experiments revealed that interfacial electron transfer readily takes place between MWNTs and surface immobilized cmCs chains. The forward electron transfer is fast (> 20 ns) while the backward recombination is slow. The recombination process strongly depends on the chain length of carboxylmethylated chitosan, i.e. a shorter recombination lifetime (~1.1 µs) for the shorter-chain cmCs coated MWNTs against that of the longer-chain cmCs coated MWNTs (~3.5 µs). The results demonstrated that the cmCs/MWNTs composite may be applied as a controllable donor-acceptor nanohybrid. Full article

Review

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Open AccessReview Phosphorescent Organic Light-Emitting Devices: Working Principle and Iridium Based Emitter Materials
Int. J. Mol. Sci. 2008, 9(8), 1527-1547; doi:10.3390/ijms9081527
Received: 11 July 2008 / Revised: 1 August 2008 / Accepted: 1 August 2008 / Published: 26 August 2008
Cited by 84 | PDF Full-text (607 KB) | HTML Full-text | XML Full-text
Abstract
Even though organic light-emitting device (OLED) technology has evolved to a point where it is now an important competitor to liquid crystal displays (LCDs), further scientific efforts devoted to the design, engineering and fabrication of OLEDs are required for complete commercialization of this
[...] Read more.
Even though organic light-emitting device (OLED) technology has evolved to a point where it is now an important competitor to liquid crystal displays (LCDs), further scientific efforts devoted to the design, engineering and fabrication of OLEDs are required for complete commercialization of this technology. Along these lines, the present work reviews the essentials of OLED technology putting special focus on the general working principle of single and multilayer OLEDs, fluorescent and phosphorescent emitter materials as well as transfer processes in host materials doped with phosphorescent dyes. Moreover, as a prototypical example of phosphorescent emitter materials, a brief discussion of homo- and heteroleptic iridium(III) complexes is enclosed concentrating on their synthesis, photophysical properties and approaches for realizing iridium based phosphorescent polymers. Full article

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