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ACS Applied Materials & Interfaces

Kai Guo, Xianfu Wang, Lintong Hu, Tianyou Zhai, Huiqiao Li, Neng Yu
Fiber supercapacitors have attracted tremendous attention as promising power source candidates for next generation of wearable electronics, which are flexible, stretchable, and washable. Although asymmetric fiber supercapacitors with a high energy density have been achieved, their stretchability is no more than 200%, and they still face mechanical instability and unreliable waterproof structure. This work develops a highly integrated structure for waterproof, highly stretchable and asymmetric fiber-shaped supercapacitor, which is assembled by integrating a helix-shaped asymmetric fiber supercapacitor into a bifunctional polymer...
May 18, 2018: ACS Applied Materials & Interfaces
Pingsheng Huang, Weisheng Guo, Guang Yang, Huijuan Song, Yuqing Wang, Chun Wang, Deling Kong, Weiwei Wang
19F MRI is of great significance for non-invasive imaging and detection of various diseases. However, the main obstacle in the application of 19F MRI agents stems from the unmet signal sensitivity, due to the poor water-solubility and restricted mobility of segments with high numbers of fluorine atoms. Herein, we report a kind of intracellular reducing microenvironment-induced amino-activatable 19F MRI nanoprobe, which can be used for specific imaging of bio-thiols. In principle, the nanoprobe has an initial architecture of hydrophobic core, where the trifluoromethyl-containing segments are compactly packed and 19F NMR/MRI signals are quenched ("OFF" state)...
May 18, 2018: ACS Applied Materials & Interfaces
Canlin Ou, Abhijeet Laxman Sangle, Anuja Datta, Qingshen Jing, Tommaso Busolo, Thomas Chalklen, Vijay Narayan, Sohini Kar-Narayan
Thermoelectric materials, capable of interconverting heat and electricity, are attractive for applications in thermal energy harvesting as a means to power wireless sensors, wearable devices and portable electronics. However, traditional inorganic thermoelectric materials pose significant challenges due to high cost, toxicity, scarcity, as well as brittleness particularly when it comes to applications requiring flexibility. Here, we investigate organic-inorganic nanocomposites that have been developed from bespoke inks which are printed via an aerosol jet printing method onto flexible substrates...
May 18, 2018: ACS Applied Materials & Interfaces
Yisi Liu, Qian Sun, Xiaofei Yang, Jianneng Liang, Biqiong Wang, Alicia Koo, Ruying Li, Jie Li, Xueliang Sun
Aluminum-air batteries are a promising power supply for electronics due to its low cost and high energy density. However, portable coin-type Al-air batteries operating under ambient air condition for small electronic appliances have rarely been reported. Herein, coin cell-type Al-air batteries using cost-effective and eco-friendly chitosan hydrogel membranes modified by SiO2, SnO2, and ZnO have been prepared and assembled. The Al-air coin cell employing chitosan hydrogel membrane containing 10 wt.% SiO2 as a separator exhibits better discharge performance with a higher flat voltage plateau, longer discharge duration, and higher power density than the cells using a chitosan hydrogel membrane containing SnO2 or ZnO...
May 18, 2018: ACS Applied Materials & Interfaces
Kousuke Noi, Yuka Nagata, Takashi Hakari, Kenji Suzuki, So Yubuchi, Yusuke Ito, Atsushi Sakuda, Akitoshi Hayashi, Masahiro Tatsumisago
All-solid-state sodium batteries using Na3Zr2Si2PO12 (NASICON) solid electrolytes are promising candidates for safe and low-cost advanced rechargeable battery systems. Although NASICON electrolytes have intrinsically high sodium ion conductivities, their high sintering temperatures interfere with the immediate development of high-performance batteries. In this work, sintering-free NASICON-based composites with Na3PS4 (NPS) glass-ceramics were prepared to combine the high grain-bulk conductivity of NASICON and the interfacial formation ability of NPS...
May 18, 2018: ACS Applied Materials & Interfaces
Jixin Yao, Kang Zhang, Wen Wang, Xueqin Zuo, Qun Yang, Huaibao Tang, Mingzai Wu, Guang Li
The porous structure and excellent specific surface area are superior for use as a counter electrode (CE) material. In addition, N-doped graphene possesses a remarkable electron-transfer pathway and many active sites. Therefore, a novel idea is to wrap uniform flower-like mesoporous Fe3O4 (Fe3O4UFM) in a N-doped graphene (N-RGO) network structure to enhance the power conversion efficiency (PCE). The hybrid materials of Fe3O4UFM@N-RGO are first used as a CE in dye-sensitized solar cells (DSSCs), showing a preeminent conductive interconnected 3D porous structure with more catalytic activity sites and a better ability for and a faster reaction rate of charge transfer, resulting in quicker reduction of I_3^- than Pt...
May 18, 2018: ACS Applied Materials & Interfaces
Yen-Jang Huang, Kun-Che Hung, Huey-Shan Hung, Shan-Hui Hsu
Nanomaterials with surface functionalized by different chemical groups can either provoke or attenuate the immune responses of the nanomaterials, which is critical to their biomedical efficacies. In this study we demonstrate that synthetic waterborne polyurethane nanoparticles (PU NPs) can inhibit the macrophage polarization towards the M1 phenotype, but not M2 phenotype. The surface-functionalized PU NPs decrease the secretion levels of proinflammatory cytokines (TNF-α and IL-1β) for M1 macrophages. Specifically, PU NPs with carboxyl groups on the surface exhibit a greater extent of inhibition on M1 polarization than those with amine groups...
May 18, 2018: ACS Applied Materials & Interfaces
Shouzhi Wang, Fukun Ma, Hehe Jiang, Yongliang Shao, Yongzhong Wu, Xiaopeng Hao
Bandgap tunable porous borocarbonitride (BCN) nanosheets were successfully fabricated with cheap and readily available precursors by annealing and exfoliating. The bandgap of the as-prepared BCN materials ranges from 5.5 eV to 1.0 eV, these samples exhibit beneficial structural features suitable for the application in supercapacitors (SCs). Especially, the BCN material with a bandgap of 1.0 eV exhibits great specific surface area (600.9 m2 g‒1), massive active sites and excellent conductivity (10.8 S m‒1)...
May 18, 2018: ACS Applied Materials & Interfaces
Anushree Dutta, Upashi Goswami, Arun Chattopadhyay
pH responsive luminescent copper nanoclusters (Cu NCs) with aggregation induced emission (AIE) characteristics have been synthesized. Upon internalization into living cells, the NCs displayed cellular pH environment dependent luminescence change with orange-red emission at pHi 4.5 while bright green emission was observed over time at pHi 7.4, through their AIE attributes. Further, the intracellular AIE kinetics of the NC probe was measured in MCF-7 cells and compared with HEK-293 cells. Intriguingly, intracellular rate constant value derived for AIE kinetics in MCF-7 cells was found 3-fold higher than that in HEK-293 cell lines, whereas the value was 2-fold higher than that observed in the aqueous medium...
May 18, 2018: ACS Applied Materials & Interfaces
Lin Wang, Baiquan Liu, Xin Zhao, Hilmi Volkan Demir, Haoshuang Gu, Handong Sun
All-inorganic cesium halide perovskite nanocrystals have attracted booming interests in optoelectronic applications for the sake of the readily adjustable bandgaps, high photoluminescence quantum yield, pure color emission and affordable cost. However, due to the ineluctable utilization of organic surfactants during the synthesis, the structural and optical properties of CsPbBr3 nanocrystals degrade upon transforming from colloidal solutions to solid thin films, which plagues the device operation. Here, we develop a novel solvent-assisted surface engineering strategy, producing high quality CsPbBr3 thin films for device applications...
May 18, 2018: ACS Applied Materials & Interfaces
Mohammad R Momeni, Christopher J Cramer
Recent experimental studies on ZrIV-based metal-organic frameworks (MOFs) have shown the extraordinary effective-ness of these porous materials for the detoxification of phos-phorus-based chemical warfare agents (CWAs). However, pressing challenges remain with respect to characterizing these catalytic processes both at the molecular and crystalline lev-els. We here use theory to compare the reactivity of different zirconium-based MOFs for the catalytic hydrolysis of the CWA sarin, using both periodic and cluster modeling...
May 18, 2018: ACS Applied Materials & Interfaces
Guifang Ge, Xinwen Guo, Chunshan Song, Zhongkui Zhao
Developing a facile method to overcome the intrinsic shortcomings of g-C3N4 photocatalyst concerning its insufficient visible-light absorption and dissatisfactory separation efficiency of charge carriers is of great significance but remains a challenge. In this work, we report, for the first time, a sapiential strategy for preparing highly-efficient nitrogen deficient g-C3N4 featuring bunchy microtubes (R-TCN) via a KOH-assisted hydrothermal treatment of rodlike melamine-cyanuric acid supramolecular aggregates (RMCA) followed by heating the reconstructed RMCA, in which KOH serves as an all-rounder for breaking hydrogen bonds, accelerating hydrolysis of melamine and nitrogen defects forming...
May 18, 2018: ACS Applied Materials & Interfaces
Rong Wang, Donglian Zhang, You Xiong, Xuehong Zhou, Cao Liu, Weifeng Chen, Weijing Wu, Lei Zhou, Miao Xu, Lei Wang, Linlin Liu, Junbiao Peng, Yuguang Ma, Yong Cao
The thin-film transistor (TFT) driving circuit is a separate electronic component embedded within the panel itself to switch the current for each pixel in active-matrix organic light-emitting diode displays. We reported a TFT-directed dye electroplating method to fabricate pixels; this would be a new method to deposit films on prepatterned electrode for organic full-color display, where TFT driving circuit provide a switching current signal to drive and direct dye depositing on selected RGB pixels. A prototype patterned color pixel matrix was achieved, as high-quality light-emitting films with uniform morphology, pure RGB chromaticity, and stable output...
May 18, 2018: ACS Applied Materials & Interfaces
Shivkant Singh, Shahab Shervin, Haiding Sun, Milad Yarali, Jie Chen, Ronghui Lin, Kuang-Hui Li, Xiaohang Li, Jae-Hyun Ryou, Anastassios Mavrokefalos
The effect of controlling the c-axis alignment (mosaicity) to the cross-plane thermal transport in textured polycrystalline aluminum nitride (AlN) thin films is experimentally and theoretically investigated. We show that by controlling the sputtering conditions we are able to deposit AlN thin films with varying c-axis grain tilt (mosaicity) from 10° to 0°. Microstructural characterization shows that the films are nearly identical in thickness and grain size, and the difference in mosaicity alters the grain interface quality...
May 17, 2018: ACS Applied Materials & Interfaces
Yunfeng Wang, Wenfei Zhang, Chao-Nan Lin, Pengpeng Ren, Ying-Jie Lu, Chongxin Shan, Siu Fung Yu
Room-temperature up-conversion emission up to eight-photon absorption is demonstrated from diamond single crystals under femtosecond laser excitation for the first time. The low concentration of defects and impurities is attributed to the support of free excitons emission at 235 nm. Nonlinear optical properties are also investigated by using an open aperture Z-scan technique. The corresponding three-, five- and eight-photon absorption coefficients of the diamonds are found to be 1.8×10-2 cm3/GW2, 5×10-9 cm7/GW4 and 1...
May 17, 2018: ACS Applied Materials & Interfaces
Ming Wu, Xinyi Lin, Xionghong Tan, Jiong Li, Zuwu Wei, Da Zhang, Youshi Zheng, Ai-Xian Zheng, Bixing Zhao, Yongyi Zeng, Xiaolong Liu, Jingfeng Liu
Pre-release of RNA molecules than chemotherapeutic drugs with a sufficient interval is a vital prerequisite for RNA/drug co-delivery strategy to overcome multidrug resistance (MDR) of cancer cells, but how to precisely control their release at different time points is still a grand challenge up to now. This study aims to on-demand remotely manipulate RNA and drug release in real time through single delivery system to sequentially play their respective roles for optimizing and enhancing their synergistic antitumor effects...
May 17, 2018: ACS Applied Materials & Interfaces
Jing Fang, Jiajun Gu, Qinglei Liu, Wang Zhang, Huilan Su, Di Zhang
Localized surface plasmon resonance (LSPR) of plasmonic metals (e.g. Au) can help semiconductors improve their photocatalytic hydrogen (H2) production performance. However, artificial synthesis of hierarchical plasmonic structures down to nanoscales is usually difficult. Here, we adopt butterfly wing scales from Morpho didius to fabricate three dimensional (3D) CdS/Au butterfly wing scales for plasmonic photocatalysis. The as-prepared materials well inherit the pristine hierarchical bio-structures. The 3D CdS/Au butterfly wing scales exhibit high H2 production rate (221...
May 17, 2018: ACS Applied Materials & Interfaces
Peiyun Yi, Weixin Zhang, Feifei Bi, Linfa Peng, Xinmin Lai
Proton exchange membrane fuel cells (PEMFCs) are renewable and clean energy conversion device, of which the metallic bipolar plates are one of the key components. However, high interfacial contact resistance and poor corrosion resistance are still great challenges for the commercialization of metallic bipolar plates. In this study, we demonstrated a novel strategy for depositing TiCx /a-C nanolayered coatings by synergy of 60 V and 300 V bias voltage to enhance corrosion resistance and interfacial conductivity...
May 17, 2018: ACS Applied Materials & Interfaces
Zhuang Lv, Liang Zou, Huanjie Wei, Shujuan Liu, Wei Huang, Qiang Zhao
It is very meaningful to develop bifunctional therapeutic agents which can monitor the tumor hypoxia in real time as well as maintain good photodynamic therapy (PDT) effect under hypoxia. To achieve it, herein, a series of hydrophilic phosphorescent starburst Pt(II) porphyrins as bifunctional therapeutic agents for simultaneous tumor hypoxia imaging and highly efficient PDT have been rationally designed and synthesized. They have been obtained by using Pt(II) porphyrins as the functional core and cationic oligofluorenes as the arms...
May 17, 2018: ACS Applied Materials & Interfaces
Roujin Ghaffari, Niloofar Eslahi, Elnaz Tamjid, Abdolreza Arash Simchi
Novel hydrogel nanoparticles with dual triggerable release properties based on fibrous structural proteins (Keratin) and thermoresponsive copolymers (Pluronic) is introduced. The nanoparticle was used for Curcumin delivery, as an effective and safe anticancer agent, hydrophobicity of which has limited its clinical application. The drug was loaded into hydrogel nanoparticles by a single-step nanoprecipitation method. The drug-loaded nanoparticles had an average dimeter of 165 nm and 66 nm at 25ºC and 37ºC, respectively...
May 17, 2018: ACS Applied Materials & Interfaces
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