Advanced Functional Materials

Cover image for Vol. 17 Issue 17

November, 2007

Volume 17, Issue 17

Pages 3393–3672

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Articles
    6. Full Papers
    7. Index
    1. Cover Picture: Excitonic and Vibrational Properties of Single-Walled Semiconducting Carbon Nanotubes (Adv. Funct. Mater. 17/2007)

      S. Kilina and S. Tretiak

      Version of Record online: 22 NOV 2007 | DOI: 10.1002/adfm.200790058

      Thumbnail image of graphical abstract

      Exciton–phonon dynamics govern the photophysics of carbon nanotubes. The excited-state electronic structure (see figure) of semiconducting single-walled carbon nanotubes is studied using a time-dependent Hartree–Fock approach. The results reveal intricate details of coupled excitonic and vibrational dynamics, and spectroscopic signatures of strongly bound and self-trapped excitons.

  2. Inside Front Cover

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Articles
    6. Full Papers
    7. Index
    1. Inside Front Cover: Surfactant-Assisted Preparation of Novel Layered Silver Bromide-Based Inorganic/Organic Nanosheets by Pulsed Laser Ablation in Aqueous Media (Adv. Funct. Mater. 17/2007)

      C. He, T. Sasaki, Y. Zhou, Y. Shimizu, M. Masuda and N. Koshizaki

      Version of Record online: 22 NOV 2007 | DOI: 10.1002/adfm.200790059

      Thumbnail image of graphical abstract

      A novel layered AgBr-based inorganic/organic nanocomposite was prepared by pulsed laser ablation of Ag in aqueous solution of cetyltrimethylammonium bromide (CTAB). The nanocomposite structure is composed of anionic bromine-rich AgBr inorganic layers and cationic surfactant layers (CTA+) with an interdigitated bilayer arrangement.

  3. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Articles
    6. Full Papers
    7. Index
  4. Feature Articles

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Articles
    6. Full Papers
    7. Index
    1. Excitonic and Vibrational Properties of Single-Walled Semiconducting Carbon Nanotubes (pages 3405–3420)

      S. Kilina and S. Tretiak

      Version of Record online: 4 OCT 2007 | DOI: 10.1002/adfm.200700314

      Thumbnail image of graphical abstract

      Exciton–phonon dynamics govern the photophysics of carbon nanotubes. The excited-state electronic structure (see figure) of semiconducting single-walled carbon nanotubes is studied using a time-dependent Hartree–Fock approach. The results reveal intricate details of coupled excitonic and vibrational dynamics, and spectroscopic signatures of strongly bound and self-trapped excitons.

    2. Organic Light Emitting Field Effect Transistors: Advances and Perspectives (pages 3421–3434)

      F. Cicoira and C. Santato

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700174

      Thumbnail image of graphical abstract

      Light emitting field effect transistors based on molecular and polymeric organic semiconductors are multifunctional devices that integrate light emission with the current modulating function of a transistor. Organic light emitting field effect transistors (OLEFETs, see figure) show great potential for technological applications such as active matrix full color electroluminescent displays. We review advances in OLEFETs since their first demonstration in 2003 and we highlight exciting challenges associated with their future development.

  5. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Articles
    6. Full Papers
    7. Index
    1. Direct Observation of Super-Plasticity of Beta-SiC Nanowires at Low Temperature (pages 3435–3440)

      Y. Zhang, X. Han, K. Zheng, Z. Zhang, X. Zhang, J. Fu, Y. Ji, Y. Hao, X. Guo and Z. L. Wang

      Version of Record online: 16 OCT 2007 | DOI: 10.1002/adfm.200700162

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      Super-plasticity of single-crystal β-SiC [111] nanowires for > 200 % elongation was observed by in situ axial-tensile experiments in a scanning electron microscope. The results of this study provide direct evidence of nanoscale super-plasticity and fracture processes occurring in individual SiC nanowires at low temperature. The results also provide information for further study of nanoscale brittle-ductile transformation, fracture, and strain induced charge-transportation changes of other semiconductor nanowires with large-strain plastic deformation.

    2. Optical Sensor Based on Nanomaterial for the Selective Detection of Toxic Metal Ions (pages 3441–3446)

      S. J. Lee, J.-E. Lee, J. Seo, I. Y. Jeong, S. S. Lee and J. H. Jung

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200601202

      Thumbnail image of graphical abstract

      A highly sensitive and selective chemical sensing system has been developed for the naked-eye detection of Hg2+ by the direct post grafting of an “azo-coupled macrocyclic chromophore” into silica nanotubes (see figure). This leads to reliable visual detection of Hg2+ even at very low concentration and in binary metal-ion systems. The sensor can be used in solution, as a solid, and as packing for column chromatography.

    3. Rational Design of Supramolecular Conjugated Polymers Displaying Unusual Colorimetric Stability upon Thermal Stress (pages 3447–3455)

      H. Park, J.-S. Lee, H. Choi, D. J. Ahn and J.-M. Kim

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700242

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      A headgroup interaction strategy is used to design conjugated polydiacetylene supramolecules that display unusual colorimetric stability upon thermal stimulation. Polydiacetylenes, derived from a disubstituted 10,12-docosadiyndioic acid derivative which contains carboxyphenylamido groups, show colorimetric stability up to 140 °C. The high thermal stability is attributed to strong headgroup interactions (hydrogen bonding and aromatic interaction) that are introduced during the self-assembling process.

    4. Combinatorial Development of Blue OLEDs Based on Star Shaped Molecules (pages 3456–3461)

      K. Kreger, M. Bäte, C. Neuber, H.-W. Schmidt and P. Strohriegl

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700223

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      Combinatorial vapor deposition has been used as an efficient tool for the optimization of blue emitting organic LEDs. Two novel fluorene-containing molecular glasses were used as light emitting and hole blocking layers. Combinatorial variation of the layer thickness leads to deep blue OLEDs with CIE coordinates of x = 0.15 and y = 0.15 and a luminous efficiency of 2 cd A–1.

    5. Bright Blue Photo- and Electroluminescence from Eu2+-Doped GaN/SiO2 Nanocomposites (pages 3462–3469)

      V. Mahalingam, M. Tan, P. Munusamy, J. B. Gilroy, M. Raudsepp and F. C. J. M. van Veggel

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200601236

      Thumbnail image of graphical abstract

      A Eu2+-doped GaN–SiO2 hybrid nanomaterial shows strong photo- and electroluminescence. The nanocomposite exhibits a bright blue luminescence when excited in the UV region (quantum yield = 23 %). The origin of the blue emission is attributed to the presence of europium ions in the +2 oxidation state in the GaN/SiO2 nanocomposites.

      Corrected by:

      Correction: Bright Blue Photo- and Electroluminescence from Eu2+-Doped GaN/SiO2 Nanocomposites

      Vol. 18, Issue 1, 9, Version of Record online: 4 JAN 2008

    6. Red–Yellow Fluorescence Patterning of a Polymer Film Containing Phthalimido Carbamate Groups (pages 3470–3476)

      K. H. Chae and Y. H. Kim

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700240

      Thumbnail image of graphical abstract

      A polymer film containing phthalimido carbamate groups is used as a bicolor fluorescent imaging material. This photopatterning method enables fluorescence images of different colors to be stored within the same film. The patterns are selectively observed by varying the excitation wavelength, as shown in the figure.

    7. Tuning the Emitting Color of Organic Light-Emitting Diodes Through Photochemically Induced Transformations: Towards Single-Layer, Patterned, Full-Color Displays and White-Lighting Applications (pages 3477–3485)

      M. Vasilopoulou, D. Georgiadou, G. Pistolis and P. Argitis

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200700231

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      Photochemically induced emission tuning for the definition of red–green–blue light-emitting areas in a single layer of poly(9-vinylcarbazole) (PVK), used in OLED technology, is proposed. The suggested approach is based on an acid-induced emission shift of the (1-[4-(dimethylamino)phenyl]-6-phenylhexatriene) (DMA-DPH) green emitter and acid-induced quenching of the red emitter (4-dimethylamino-4′-nitrostilbene) (DANS), which are both dispersed inside the PVK layer (see figure).

    8. Photoinduced Chiral Nematic Organization in an Achiral Glassy Nematic Azopolymer (pages 3486–3492)

      R. M. Tejedor, L. Oriol, J. L. Serrano, F. Partal Ureña and J. J. López González

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200700202

      Thumbnail image of graphical abstract

      A liquid crystalline homopolymer that has photoisomerizable methoxyazobenzene groups in the side chain exhibits a selective reflection (see figure). The transfer of chirality from chiral radiation to the azopolymer through chiral conformations is proposed as a model for explaining, in a manner similar to chiral dopants in a nematic phase inducing a chiral nematic organization, the photoinduced helix.

    9. Simple Route to Hydrophilic Microfluidic Chip Fabrication Using an Ultraviolet (UV)-Cured Polymer (pages 3493–3498)

      S. H. Kim, Y. Yang, M. Kim, S.-W. Nam, K.-M. Lee, N. Y. Lee, Y. S. Kim and S. Park

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200601203

      Thumbnail image of graphical abstract

      Capillary forces can be used to fill this commercially available UV-cured photopolymer with aqueous solutions (see figure) as opposed to the more commonly used polydimethylsiloxane. The beauty of this is that microfluidic chips created from this material can easily be produced by a simple oxygen-plasma treatment. The chips in their turn can then be used for assays and other optical detection systems.

    10. Monodisperse Thermoresponsive Microgels with Tunable Volume-Phase Transition Kinetics (pages 3499–3504)

      L.-Y. Chu, J.-W. Kim, R. K. Shah and D. A. Weitz

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200700379

      Thumbnail image of graphical abstract

      A facile method to control the volume-phase transition kinetics of thermo-sensitive microgels is presented. The flexibility and control over the response kinetics offered by this method should make these microgels more useful for a wide range of applications.

    11. Poly(vinyl alcohol) Scaffolds with Tailored Morphologies for Drug Delivery and Controlled Release (pages 3505–3513)

      M. C. Gutiérrez, Z. Y. García-Carvajal, M. Jobbágy, F. Rubio, L. Yuste, F. Rojo, M. L. Ferrer and F. del Monte

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200700093

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      A unidirectional freezing process, named ISISA (ice segregation induced self-assembly), is applied for the preparation of monolithic poly(vinyl alcohol) scaffolds with a well-defined microchanneled structure (see figure; scale bar: 10 μm). The scaffolds can be used for drug delivery purposes: the drug kinetic release being controlled by its structural morphology.

    12. A Novel Fluorene-Triphenylamine Hybrid That is a Highly Efficient Host Material for Blue-, Green-, and Red-Light-Emitting Electrophosphorescent Devices (pages 3514–3520)

      P.-I Shih, C.-H. Chien, F.-I. Wu and C.-F. Shu

      Version of Record online: 28 AUG 2007 | DOI: 10.1002/adfm.200700191

      Thumbnail image of graphical abstract

      Electrophosphorescent devices based on the readily synthesized, morphologically and electrochemically stable host material TFTPA, which contains a triphenylamine core and three 9-phenyl-9-fluorenyl peripheries, exhibit superior performance relative to devices based on conventional carbazole derivatives.

    13. Density Functional Theoretical Studies on Polyaniline/HNb3O8 Layered Nanocomposites (pages 3521–3529)

      G. Yang, W. Hou, X. Feng, X. Jiang and J. Guo

      Version of Record online: 16 OCT 2007 | DOI: 10.1002/adfm.200700135

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      The interaction between a Nb3O8 inorganic slab and the backbone polyaniline (PANI) is closely related to the conformation of the interlayered PANI molecule. The relatively wider interlayer space in PaniHNb-V allows favorable hydrogen bonds to be formed, and a good electron transfer channel is created between the PANI molecule and the inorganic slab.

    14. Enhanced Photoluminescence of Oxygen Sensing Films through Doping with High Dielectric Constant Particles (pages 3530–3537)

      Z. Zhou, R. Shinar, A. J. Allison and J. Shinar

      Version of Record online: 4 OCT 2007 | DOI: 10.1002/adfm.200700324

      Thumbnail image of graphical abstract

      A uniquely simple approach to enhance the photoluminescence of dye-doped sensor films, up to ∼10 fold, is achieved by embedding titania (nano)particles in the films. The enhancement is attributed to light scattering by the particles and, possibly, voids in the film.

    15. Steady-State and Transient Behavior of Organic Electrochemical Transistors (pages 3538–3544)

      D. A. Bernards and G. G. Malliaras

      Version of Record online: 16 OCT 2007 | DOI: 10.1002/adfm.200601239

      Thumbnail image of graphical abstract

      A model for the steady-state and transient behavior of organic electrochemical transistors (see figure) is developed. Comparison with experimental results allows an estimate of the hole mobility in PEDOT:PSS, which was found to be in the range of 10-2–10-3 cm2 / V s. The model enables the rational design of design of devices based on electrochemical transistors, including sensors.

    16. Selective Nucleation of Organic Single Crystals from Vapor Phase on Nanoscopically Rough Surfaces (pages 3545–3553)

      S. C. B. Mannsfeld, A. L. Briseno, S. Liu, C. Reese, M. E. Roberts and Z. Bao

      Version of Record online: 16 OCT 2007 | DOI: 10.1002/adfm.200700330

      Thumbnail image of graphical abstract

      Nanoscopically rough octadecyltriethoxysilane film domains printed on an inert, smooth substrates act as single crystal nucleation sites for a variety of organic semiconductor materials (see figure). The mechanism driving the preferential nucleation is elucidated.

    17. Surfactant-Assisted Preparation of Novel Layered Silver Bromide-Based Inorganic/Organic Nanosheets by Pulsed Laser Ablation in Aqueous Media (pages 3554–3561)

      C. He, T. Sasaki, Y. Zhou, Y. Shimizu, M. Masuda and N. Koshizaki

      Version of Record online: 16 OCT 2007 | DOI: 10.1002/adfm.200700081

      Thumbnail image of graphical abstract

      A novel layered AgBr-based inorganic/organic nanocomposite was prepared by pulsed laser ablation of Ag in aqueous solution of cetyltrimethylammonium bromide (CTAB). The nanocomposite structure is composed of anionic bromine-rich AgBr inorganic layers and cationic surfactant layers (CTA+) with an interdigitated bilayer arrangement.

    18. Nanoparticles Prepared by Salt Vapor-Solvent Vapor Cocondensation and Controlled Nucleation: Metal Sulfides (ZnS, CdS, CdSe, PbS), and Metal Halide (LiF). Size, Aggregates, Structures, Digestive Ripening, Superlattices, and Impregnations (pages 3562–3568)

      D. Heroux, A. Ponce, S. Cingarapu and K. J. Klabunde

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700373

      Thumbnail image of graphical abstract

      Vaporization of bulk metal sulfides, selenides, tellurides, and halides, followed by controlled aggregation of molecular species at low temperature, yields nanoparticles in large amounts. This approach worked well with ZnS, CdS, CdSe, CdTe, SnS, PbS, and LiF. Trapping ligands can be added as desired at low or higher temperatures.

    19. Thermally Stable and Solvent Resistant Mesoporous Honeycomb Films from a Crosslinkable Polymer (pages 3569–3573)

      T. Kabuto, Y. Hashimoto and O. Karthaus

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700249

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      Regular microporous films, so-called ‘honeycomb films' were prepared from a commercial maleic anhydride copolymer, which can be chemically crosslinked. Crosslinked films show increased stability to up to 350 °C. The mild crosslinking reaction prevents excessive shrinkage that plagued other reactions using polyimides or azide-containing polymers in the past.

    20. Benzodithiophene Copolymer—A Low-Temperature, Solution-Processed High-Performance Semiconductor for Thin-Film Transistors (pages 3574–3579)

      H. Pan, Y. Wu, Y. Li, P. Liu, B. S. Ong, S. Zhu and G. Xu

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200601242

      Thumbnail image of graphical abstract

      Poly(4,8-didodecyl-2,6-bis-(3-methylthiophen-2-yl)-benzo[1,2-b:4,5-b']dithiophene) self-assembled on appropriate substrates from solution and formed highly structured thin films at low temperatures. As an as-prepared thin-film semiconductor without thermal annealing, it exhibited excellent field-effect transistor properties with mobility of ∼ 0.15 cm2 V-1s-1 in thin-film transistors.

    21. High-Efficiency Red Phosphorescent Iridium Dendrimers with Charge- Transporting Dendrons: Synthesis and Electroluminescent Properties (pages 3580–3589)

      B. Liang, L. Wang, Y. H. Xu, H. H. Shi and Y. Cao

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700222

      Thumbnail image of graphical abstract

      A series of red-emitting dendritic iridium complexes (see figure) with encapsulated 1-phenylisoquinoline derivatives with peripheral arylamines as dendrons are synthesized. Devices from such dendrimers with 4,4′-bis(N-carbazolyl)biphenyl (CBP) as host fabricated by using solution processing in a device configuration of ITO/(dendrimer:CBP (2:8))/TPBI/LiF/Al (TPBI = 1,3,5-tris(2-N-phenylbenzimidazolyl)benzene) show high external quantum efficiencies.

    22. 3D Microstructured Surfaces Obtained by Soft-Lithography Using Fast-Crosslinking Elastomeric Precursors and 2D Masters (pages 3590–3597)

      A. del Campo, I. Álvarez, S. Filipe and M. Wilhelm

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700132

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      Retarded micromoulding using masters with 2D topographies and fluid elastomeric precursors with various initial viscosities and fast crosslinking kinetics has been exploited to easily create homogeneously 3D microstructured surfaces possessing tubes and concave and convex hemispheres with defined dimensions.

    23. Novel Multi-functional Mixed-oxide Catalysts for Effective NOx Capture, Decomposition, and Reduction (pages 3598–3606)

      J. J. Yu, X. P. Wang, L. D. Li, Z. P. Hao, Z. P. Xu and G. Q. Lu

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700334

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      Novel multi-functional mixed-oxide catalysts made of normal transition metals from hydrotalcite-like precursors exhibit excellent performance in NO decomposition, capture, and reduction in the presence of oxygen, with activities comparable or superior to noble metal-containing catalysts.

    24. Multifunctional Nanocrystalline Thin Films of Er2O3: Interplay between Nucleation Kinetics and Film Characteristics (pages 3607–3612)

      M. Losurdo, M. M. Giangregorio, P. Capezzuto, G. Bruno, R. G. Toro, G. Malandrino, I. L. Fragalà, L. Armelao, D. Barreca, E. Tondello, A. A. Suvorova, D. Yang and E. A. Irene

      Version of Record online: 4 OCT 2007 | DOI: 10.1002/adfm.200700524

      Thumbnail image of graphical abstract

      Thin films of Er2O3 are deposited by low-pressure metal–organic chemical vapor deposition (MOCVD) on various substrates, including p-type Si(100), Si(111), Corning glass, and α-Al2O3(0001). The high dielectric values determined (see figure) confirm the high quality of the prepared films. The applicability of the prepared films as antireflective and protective coatings and as a high-k gate dielectrics in CMOS devices is demonstrated.

      Corrected by:

      Correction: Multifunctional Nanocrystalline Thin Films of Er2O3: Interplay between Nucleation Kinetics and Film Characteristics

      Vol. 18, Issue 1, 10, Version of Record online: 4 JAN 2008

    25. Preparation of Short Carbon Nanotubes and Application as an Electrode Material in Li-Ion Batteries (pages 3613–3618)

      X. X. Wang, J. N. Wang, H. Chang and Y. F. Zhang

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700319

      Thumbnail image of graphical abstract

      Long multiwalled carbon nanotubes are diced into short ca. 200 nm long segments (see figure) by a novel solid-state cutting method. The short nanotubes exhibit far superior performance as anode materials in Li-ion batteries as compared to their longer counterparts. The improvement in performance arises from the ease of intercalation/deintercalation of Li ions into/from the shorter tubes.

    26. Control of Specular and Diffuse Reflection of Light Using Particle Self-Assembly at the Polymer and Metal Interface (pages 3619–3625)

      J. S. Ahn, T. R. Hendricks and I. Lee

      Version of Record online: 23 OCT 2007 | DOI: 10.1002/adfm.200700251

      Thumbnail image of graphical abstract

      A novel method of fabricating diffusive light reflectors by the electrostatic deposition of a spherical particle monolayer followed by electroless plating is presented. By simply changing the particle size, the amount of specular and diffuse reflected can be controlled (see figure).

    27. A Pt–Fe Carbon Nitride Nano-electrocatalyst for Polymer Electrolyte Membrane Fuel Cells and Direct-Methanol Fuel Cells: Synthesis, Characterization, and Electrochemical Studies (pages 3626–3638)

      V. Di Noto, E. Negro, R. Gliubizzi, S. Lavina, G. Pace, S. Gross and C. Maccato

      Version of Record online: 30 OCT 2007 | DOI: 10.1002/adfm.200601003

      Thumbnail image of graphical abstract

      A new bi-metal Pt–Fe carbon nitride nano-electrocatalyst for the oxygen- reduction reaction (ORR) and the hydrogen-oxidation reaction in polymer electrolyte membrane fuel cells is prepared and studied. The product (see figure) is synthesized by thermal decomposition of a metallorganic precursor obtained through a sol–gel process. The nano-electrocatalyst presents a higher mass activity and a lower overpotential for the ORR with respect to the platinum reference.

    28. Thickness-Dependent Structural Evolutions and Growth Models in Relation to Carrier Transport Properties in Polycrystalline Pentacene Thin Films (pages 3639–3649)

      H.-L. Cheng, Y.-S. Mai, W.-Y. Chou, L.-R. Chang and X.-W. Liang

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200700207

      Thumbnail image of graphical abstract

      A growth model that rationalizes the thickness-driven phase transformations in polycrystalline pentacene films in terms of crystal structure, grain size, surface energy, and molecular structure and microstructure is proposed (see figure). The thickness-dependent carrier transport properties of the corresponding films are also discussed.

    29. Electrospinning: A Facile Method to Disperse Fluorescent Quantum Dots in Nanofibers without Förster Resonance Energy Transfer (pages 3650–3656)

      M. Li, J. Zhang, H. Zhang, Y. Liu, C. Wang, X. Xu, Y. Tang and B. Yang

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200700241

      Thumbnail image of graphical abstract

      Fluorescent CdTe quantum dots (QDs) dispersed into poly(vinyl alcohol) (PVA) can easily be integrated into nanofibers by electrospinning of the QD–PVA blending solution. The QDs are well separated in the nanofibers, and no Förster resonance energy transfer occurs even when multi-color QDs are incorporated (see figure). The method described here is applicable to all kinds of QDs and polymers and may lead to a wide range of applications in the fields of optical modulation and optical communication.

    30. All-Optical Operation Cycle on Molecular Bits with 250-GHz Clock-Rate Based on Photochromic Fulgides (pages 3657–3662)

      S. Malkmus, F. O. Koller, S. Draxler, T. E. Schrader, W. J. Schreier, T. Brust, J. A. DiGirolamo, W. J. Lees, W. Zinth and M. Braun

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200700553

      Thumbnail image of graphical abstract

      Trifluoromethyl-substituted indolylfulgide acts as a molecular bit in an all-optical ultrafast write–readout–erase–readout operation cycle. Information is coded in the isomeric state of the molecular switch and the bit state is toggled in the picosecond range using ultrashort optical pulses. Optical pulses in the mid-IR spectroscopic range implement an ultrafast and non-destructive readout of the bit state.

    31. A Europium Complex With Excellent Two-Photon-Sensitized Luminescence Properties (pages 3663–3669)

      R. Hao, M. Li, Y. Wang, J. Zhang, Y. Ma, L. Fu, X. Wen, Y. Wu, X. Ai, S. Zhang and Y. Wei

      Version of Record online: 31 OCT 2007 | DOI: 10.1002/adfm.200700413

      Thumbnail image of graphical abstract

      The europium complex [Eu(tta)3dmbpt] (tta: thenoyltrifluoroacetonato; dmbpt: 2-(N,N-diethyl-2,6-dimethylanilin-4-yl)-4,6-bis(3,5-dimethylpyrazol-1-yl)-1,3,5-triazine) exhibits a broad two-photon excitation window with large two-photon absorption action cross sections in the near IR region (see figure), which may serve as an applicable luminescent material in developing new probes for bioanalysis.

  6. Index

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Contents
    5. Feature Articles
    6. Full Papers
    7. Index

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