Advanced Functional Materials

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  1. Confinement of Long-Lived Triplet Excitons in Organic Semiconducting Host–Guest Systems

    Naoto Notsuka, Ryota Kabe, Kenichi Goushi and Chihaya Adachi

    Version of Record online: 20 SEP 2017 | DOI: 10.1002/adfm.201703902

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    The nonradiative deactivation pathway of long-lived room-temperature phosphorescence is strongly affected by the triplet energy gap between the guest emitting molecules and the host matrices in organic semiconducting host–guest systems. The triplet energy gap required to confine the long-lived triplet excitons (≈0.5 eV) is much larger than that of conventional triplet exciton harvesting host–guest systems.

  2. Sonication-Assisted Synthesis of Gallium Oxide Suspensions Featuring Trap State Absorption: Test of Photochemistry

    Nitu Syed, Ali Zavabeti, Md Mohiuddin, Baoyue Zhang, Yichao Wang, Robi S. Datta, Paul Atkin, Benjamin J. Carey, Cheng Tan, Joel van Embden, Anthony S. R. Chesman, Jian Zhen Ou, Torben Daeneke and Kourosh Kalantar-zadeh

    Version of Record online: 20 SEP 2017 | DOI: 10.1002/adfm.201702295

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    Sonication-assisted route employed on liquid metal gallium is presented as a new route for synthesizing gallium oxide (Ga2O3) nanoflakes. The suspension of Ga2O3 is used for dye degradation, showing a remarkable efficiency, which is ascribed to the presence of trap bands.

  3. A Dual-Layered Microfluidic System for Long-Term Controlled In Situ Delivery of Multiple Anti-Inflammatory Factors for Chronic Neural Applications

    Laura Frey, Praveen Bandaru, Yu Shrike Zhang, Kevin O'Kelly, Ali Khademhosseini and Su Ryon Shin

    Version of Record online: 20 SEP 2017 | DOI: 10.1002/adfm.201702009

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    A dual-layered microfluidic coating for neural probes is developed, consisting of a hydrogel and a porous membrane to allow for sustained, steady diffusion of multiple anti-inflammatory factors into the surrounding brain tissue. In vitro models indicate that repeated infusions of interleukin-4 through such a system increase anti-inflammatory M2 macrophage phenotypes and decrease pro-inflammatory markers in astrocytes over a 3-week culture.

  4. Multifunctional Glyco-Nanofibers: siRNA Induced Supermolecular Assembly for Codelivery In Vivo

    Yincheng Chang, Yinghua Lv, Peng Wei, Pengfei Zhang, Liang Pu, Xiaoxu Chen, Kui Yang, Xueliang Li, Yuchao Lu, Chenxi Hou, Yuxin Pei, Wenxian Zeng and Zhichao Pei

    Version of Record online: 20 SEP 2017 | DOI: 10.1002/adfm.201703083

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    Glyco-nanofibers (GNFs) are synthesized via supermolecular assembly of polyanionic small interfering RNA (siRNA) and cationic vesicles assembled by an amphiphilic lactose derivative capped with cationic ferrocenium. The obtained GNFs display excellent biocompatibility, enhanced cell-penetrating ability, and hepatoma targetability, enabling highly efficient codelivery of drug/siRNA to reduce adverse side effects and overcome multidrug resistance of cancer in vitro and in vivo.

  5. A Textile Dressing for Temporal and Dosage Controlled Drug Delivery

    Pooria Mostafalu, Gita Kiaee, Giorgio Giatsidis, Akbar Khalilpour, Mahboobeh Nabavinia, Mehmet R. Dokmeci, Sameer Sonkusale, Dennis P. Orgill, Ali Tamayol and Ali Khademhosseini

    Version of Record online: 19 SEP 2017 | DOI: 10.1002/adfm.201702399

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    A smart textile dressing is fabricated using composite fibers with a core electrical heater covered by a layer of hydrogel containing thermoresponsive drug carriers. The fibers are assembled into fabrics using textile processes in which each thread operates as an independent functional unit that can be individually triggered to allow the on-demand release of a specific drug.