Advanced Functional Materials

Cover image for Vol. 24 Issue 4

January 29, 2014

Volume 24, Issue 4

Pages 417–562

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      Ion Gating: Light-Gating Titania/Alumina Heterogeneous Nanochannels with Regulatable Ion Rectification Characteristic (Adv. Funct. Mater. 4/2014) (page 417)

      Qianqian Zhang, Ziying Hu, Zhaoyue Liu, Jin Zhai and Lei Jiang

      Version of Record online: 23 JAN 2014 | DOI: 10.1002/adfm.201470020

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      Artificial heterogeneous nanochannels with lightresponsive ion transport properties are demonstrated by Z. Liu, J. Zhai, and co-workers on page 424. Their fabrication includes coating an anatase TiO2 porous layer onto an alumina porous supporter, followed by chemical modification with octadecyltrimethoxysilane (OTS) molecules. The decomposition of OTS molecules by TiO2 photocatalysis under UV light contributes to a change of surface wettability and an asymmetric distribution of surface negative charges, which realize the ion gating and regulatable ion rectification characteristics simultaneously.

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      Drug Delivery: On-Chip Fabrication of Paclitaxel-Loaded Chitosan Nanoparticles for Cancer Therapeutics (Adv. Funct. Mater. 4/2014) (page 418)

      Fatemeh Sadat Majedi, Mohammad Mahdi Hasani-Sadrabadi, Jules John VanDersarl, Nassir Mokarram, Shahirar Hojjati-Emami, Erfan Dashtimoghadam, Shahin Bonakdar, Mohammad Ali Shokrgozar, Arnaud Bertsch and Philippe Renaud

      Version of Record online: 23 JAN 2014 | DOI: 10.1002/adfm.201470021

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      The use of solvent-free microfluidics to fine-tune the physical and chemical properties of chitosan nanoparticles for drug delivery is demonstrated by J. J. VanDersarl, P. Renaud, and co-workers on page 432. Controlling the time of mixing to within milliseconds during nanoparticle self-assembly enables the adjustment of nanoparticle size, surface charge, and compactness, as well as drug-loading efficiency. These drug-loaded nanoparticles can be passively targeted to tumors, benefiting from enhanced permeability and retention, along with pH-responsive release characteristics.

  3. Masthead

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      Masthead: (Adv. Funct. Mater. 4/2014)

      Version of Record online: 23 JAN 2014 | DOI: 10.1002/adfm.201470024

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Full Papers
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  5. Full Papers

    1. Top of page
    2. Cover Picture
    3. Inside Front Cover
    4. Masthead
    5. Contents
    6. Full Papers
    1. Light-Gating Titania/Alumina Heterogeneous Nanochannels with Regulatable Ion Rectification Characteristic (pages 424–431)

      Qianqian Zhang, Ziying Hu, Zhaoyue Liu, Jin Zhai and Lei Jiang

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/adfm.201301426

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      Artificial nanochannels based on chemically modified TiO2/Al2O3 heterogeneous porous membranes are described. The irreversible decomposition of octadecyltrimethoxysilane (OTS) molecules by TiO2 photocatalysis under ultraviolet light results in a change of surface wettability and an asymmetric distribution of surface negative charges simultaneously, which contributes to the ion gating and regulatable ion rectification.

    2. On-Chip Fabrication of Paclitaxel-Loaded Chitosan Nanoparticles for Cancer Therapeutics (pages 432–441)

      Fatemeh Sadat Majedi, Mohammad Mahdi Hasani-Sadrabadi, Jules John VanDersarl, Nassir Mokarram, Shahirar Hojjati-Emami, Erfan Dashtimoghadam, Shahin Bonakdar, Mohammad Ali Shokrgozar, Arnaud Bertsch and Philippe Renaud

      Version of Record online: 5 AUG 2013 | DOI: 10.1002/adfm.201301628

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      Using microfluidics to precisely regulate self-assembly conditions, a number of nanoparticle properties are tuned to optimize drug-delivery efficacy. These parameters include size, zeta potential, and pH responsiveness. These nanoparticles are stable during circulation at physiological pH, but if they encounter a tumor cell, where the pH is lower, they rapidly release their anti-cancer drug cargo

    3. Biofunctional Micropatterning of Thermoformed 3D Substrates (pages 442–450)

      Björn Waterkotte, Florence Bally, Pavel M. Nikolov, Ansgar Waldbaur, Bastian E. Rapp, Roman Truckenmüller, Jörg Lahann, Katja Schmitz and Stefan Giselbrecht

      Version of Record online: 22 JUL 2013 | DOI: 10.1002/adfm.201301093

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      Chemical vapor deposition polymerization and maskless projection lithography with protein adsorption by photobleaching (MPL-PAP) in combination with microscale thermoforming are presented as two versatile technologies to create patterned biofunctionalized 3D substrates. These technologies provide new perspectives for bioanalytical applications and 3D cell culture platforms.

    4. NIR-Triggered Synergic Photo-chemothermal Therapy Delivered by Reduced Graphene Oxide/Carbon/Mesoporous Silica Nanocookies (pages 451–459)

      Yu-Wei Chen, Po-Jung Chen, Shang-Hsiu Hu, I-Wei Chen and San-Yuan Chen

      Version of Record online: 23 AUG 2013 | DOI: 10.1002/adfm.201301763

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      Formed by a one-pot, scalable emulsion method and triggered by near infrared irradiation, photosensitive nanoparticles with a silica/carbon nanostructure supported on a reduced graphene oxide substrate can control release of hydrophobic chemotherapy drugs with synergistic hyperthermia effects, eradicating tumor cells in vivo and in vitro on demand.

    5. Amorphous Si3B3N7 Ceramic as a Versatile Host for Inorganic Phosphor Activators (pages 460–464)

      Hasan Cakmak and Martin Jansen

      Version of Record online: 3 SEP 2013 | DOI: 10.1002/adfm.201301743

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      An amorphous Si3B3N7 network serves as a universal host for various activator ions to be used as inorganic phosphors, particularly for LED-based lighting devices. This solution-based synthesis route provides significant advantages, e.g., tuning the emission color of the phosphors via codoping with more than one activator ion in high purity and homogeneity.

    6. A Pyrenylpropyl Phosphonic Acid Surface Modifier for Mitigating the Thermal Resistance of Carbon Nanotube Contacts (pages 465–471)

      John H. Taphouse, O'Neil L. Smith, Seth R. Marder and Baratunde A. Cola

      Version of Record online: 4 SEP 2013 | DOI: 10.1002/adfm.201301714

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      A pyrenylpropyl phosphonic acid surface modifier is developed for coupling carbon nanotubes to metal oxide surfaces to reduce the thermal contact resistance. The modifier is demonstrated through experiment to reduce the thermal contact resistance between vertically aligned carbon nanotube forests and Cu oxide surfaces by roughly 9-fold, enabling carbon nanotube-based thermal interface materials with thermal resistances comparable to conventional metallic solders

    7. Cell-Tethered Ligands Modulate Bone Remodeling by Osteoblasts and Osteoclasts (pages 472–479)

      Rebecca S. Hayden, Jean-Philippe Fortin, Benjamin Harwood, Balajikarthick Subramanian, Kyle P. Quinn, Irene Georgakoudi, Alan S. Kopin and David L. Kaplan

      Version of Record online: 6 SEP 2013 | DOI: 10.1002/adfm.201302210

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      A method for modulating bone remodeling by osteoblasts and osteoclasts using cell-tethered parathyroid hormone (tPTH) and glucose-dependent insulinotropic peptide (tGIP) is described. Cell-modified silk film biomaterial surfaces are reconstructed from scanning electron microscope images into three-dimensional surface models using image processing for quantitative measurement of surface characteristics. tPTH increases remodeled surface roughness while tGIP has the opposite effect.

    8. Enzymatic Writing to Soft Films: Potential to Filter, Store, and Analyze Biologically Relevant Chemical Information (pages 480–491)

      Yi Liu, Eunkyoung Kim, Morgan E. Lee, Boce Zhang, Yossef A. Elabd, Qin Wang, Ian M. White, William E. Bentley and Gregory F. Payne

      Version of Record online: 16 AUG 2013 | DOI: 10.1002/adfm.201301434

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      An enzyme is used to “filter” chemical information and write this information to a hydrogel film, which then serves as a permanent storage medium that can be ‘read’ repeatedly, interactively, and by multiple sensor modalities. Potentially, this approach will be applicable for problems such as analysis of the health benefits of dietary phenols.

    9. Spray-Layer-by-Layer Carbon Nanotube/Electrospun Fiber Electrodes for Flexible Chemiresistive Sensor Applications (pages 492–502)

      Kittipong Saetia, Jan M. Schnorr, Matthew M. Mannarino, Sung Yeol Kim, Gregory C. Rutledge, Timothy M. Swager and Paula T. Hammond

      Version of Record online: 20 SEP 2013 | DOI: 10.1002/adfm.201302344

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      Flexible sensory material based on conformal multi-walled carbon nanotube (MWNT) films on a porous electrospun polymeric fiber mat is constructed using a vacuum-assisted spray layer-by-layer assembly. The resulting thin MWNT films coat individual electrospun fibers with controlled loading and electrical conductivity. The MWNT/electrospun fiber electrodes display reversible responses and high sensitivity for detecting DMMP in aqueous and vapor phases.

    10. Photostable Iodinated Silica/Porphyrin Hybrid Nanoparticles with Heavy-Atom Effect for Wide-Field Photodynamic/Photothermal Therapy Using Single Light Source (pages 503–513)

      Koichiro Hayashi, Michihiro Nakamura, Hirokazu Miki, Shuji Ozaki, Masahiro Abe, Toshio Matsumoto, Toshinari Kori and Kazunori Ishimura

      Version of Record online: 19 AUG 2013 | DOI: 10.1002/adfm.201301771

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      Photodynamic/photothermal combination therapy using iodinated silica/porphyrin hybrid nanoparticles (ISP HNPs) inhibits tumor growth. The ISP HNPs have high photostability, and they efficiently generate both 1O2 and heat with irradiation from an LED because of the external heavy-atom effect. The surface-modified ISP HNPs accumulate in tumor tissue. Light irradiation to the tumor leads to the death of tumor cells.

    11. Transparent, Flexible Films Based on Layered Double Hydroxide/Cellulose Acetate with Excellent Oxygen Barrier Property (pages 514–521)

      Yibo Dou, Simin Xu, Xiaoxi Liu, Jingbin Han, Hong Yan, Min Wei, David G. Evans and Xue Duan

      Version of Record online: 21 AUG 2013 | DOI: 10.1002/adfm.201301775

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      Transparent, flexible films with excellent oxygen barrier behavior are fabricated by spin-coating of cellulose acetate (CA) and layered double hydroxide (LDH) nanoplatelets alternately, followed by thermal annealing treatment. The resulting (CA/LDH)20 film exhibits extraordinarily enhanced oxygene barrier property, superior to the previously reported inorganic-filled films.

    12. A Multi-synergistic Platform for Sequential Irradiation-Activated High-Performance Apoptotic Cancer Therapy (pages 522–529)

      Zhaowei Chen, Zhenhua Li, Jiasi Wang, Enguo Ju, Li Zhou, Jinsong Ren and Xiaogang Qu

      Version of Record online: 22 OCT 2013 | DOI: 10.1002/adfm.201301951

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      With the aid of sequential irradiation, highly integrated reduced graphene oxide–ZnO nanoparticle–hyaluronic acid nanoassemblies can serve as a multi-synergistic platform for targeted high-performance apoptotic cancer therapy. The reactive oxygen species generated by ZnO/rGo under light irradiation can effectively sensitize cancer cells to the subsequent NIR laser-induced apoptotic hyperthermia.

    13. Self-Assembly of Multiple Stacked Nanorings by Vertically Correlated Droplet Epitaxy (pages 530–535)

      Jiang Wu, Yusuke Hirono, Xinlei Li, Zhiming M. Wang, Jihoon Lee, Mourad Benamara, Siyuan Luo, Yuriy I. Mazur, Eun Soo Kim and Gregory J. Salamo

      Version of Record online: 12 AUG 2013 | DOI: 10.1002/adfm.201302032

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      The nanodroplets preferably form on pre-existing nanorings, which enables fabrication of vertically aligned nanostructures by droplet epitaxy. Nucleation thermodynamics and growth kinetics are proposed to explain the vertically correlated droplet epitaxy. Heterojunctions can be realized at the nanoscale by this method. In addition, the nucleation thermodynamics of these nanodroplets will allow site-controlled fabrication of nanostructures.

    14. Phototunable Underwater Oil Adhesion of Micro/Nanoscale Hierarchical-Structured ZnO Mesh Films with Switchable Contact Mode (pages 536–542)

      Dongliang Tian, Zhenyan Guo, Yiliang Wang, Wenxian Li, Xiaofang Zhang, Jin Zhai and Lei Jiang

      Version of Record online: 27 OCT 2013 | DOI: 10.1002/adfm.201301799

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      Phototunable oil adhesion underwater on micro/nanoscale hierarchical structured ZnO mesh films with switchable contact mode between UV irradiation and storage in the dark is demonstrated. This work is promising for photocontrollable underwater oil adhesion, and may also provide interesting insight into the design of novel materials and functional devices based on the controllable adhesion of oil at surfaces.

    15. π-Conjugated Molecules Crosslinked Graphene-Based Ultrathin Films and Their Tunable Performances in Organic Nanoelectronics (pages 543–554)

      Xiaowei Ou, Penglei Chen, Lang Jiang, Yunfan Shen, Wenping Hu and Minghua Liu

      Version of Record online: 3 SEP 2013 | DOI: 10.1002/adfm.201302153

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      Graphene-based ultrathin films simultaneously featured with tunable performance, controlled thickness, and high stability, are integrated using π-conjugated molecules as cross-linkages. The use of dual functional linkage endows our new protocol with broad opportunities for desired motives in terms of using elaborately-designed linkages of desired functions.

    16. Highly Efficient Yellow Organic Light Emitting Diode with a Novel Wet- and Dry-Process Feasible Iridium Complex Emitter (pages 555–562)

      Jwo-Huei Jou, You-Xing Lin, Shiang-Hau Peng, Chieh-Ju Li, Yu-Min Yang, Chih-Lung Chin, Jing-Jong Shyue, Shih-Sheng Sun, Mandy Lee, Chien-Tien Chen, Ming-Chung Liu, Cheng-Chang Chen, Guan-Yu Chen, Jin-Han Wu, Cheng-Hung Li, Chao-Feng Sung, Mei-Ju Lee and Je-Ping Hu

      Version of Record online: 5 AUG 2013 | DOI: 10.1002/adfm.201302013

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      A highly efficient, iridium-based, yellow emitter with both dry- and wet-process feasibility is presented. The yellow OLED device exhibits, at 1000 cd m−2, an efficacy of 75 lm W−1 via evaporation deposition, the highest among all reported dry-processed yellow OLEDs, and 52 lm W−1 via spin-coating, the highest among all wet-processed counterparts.

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