Resolving the Structure of Ti3C2Tx MXenes through Multilevel Structural Modeling of the Atomic Pair Distribution Function

Chemistry of Materials

DOI: 10.1021/acs.chemmater.5b04250

Hsiu-Wen Wang, Michael Naguib, Katharine Page, David J. Wesolowski and Yury Gogotsi
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Correction to Coinage-Metal-Stuffed Eu9Cd4Sb9: Metallic Compounds with Anomalous Low Thermal Conductivities

Chemistry of Materials

DOI: 10.1021/acs.chemmater.5b04808

Nasrin Kazem, Julia V. Zaikina, Saneyuki Ohno, G. Jeffrey Snyder and Susan M. Kauzlarich
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Interface Stability in Solid-State Batteries

Chemistry of Materials

DOI: 10.1021/acs.chemmater.5b04082

William D. Richards, Lincoln J. Miara, Yan Wang, Jae Chul Kim and Gerbrand Ceder
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Hybrid, Gate-Tunable, van der Waals p–n Heterojunctions from Pentacene and MoS2

Nano Letters

DOI: 10.1021/acs.nanolett.5b04141

Deep Jariwala, Sarah L. Howell, Kan-Sheng Chen, Junmo Kang, Vinod K. Sangwan, Stephen A. Filippone, Riccardo Turrisi, Tobin J. Marks, Lincoln J. Lauhon and Mark C. Hersam
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Correction to High-Efficiency Colloidal Quantum Dot Photovoltaics via Robust Self-Assembled Monolayers

Nano Letters

DOI: 10.1021/acs.nanolett.5b04797

Gi-Hwan Kim, F. Pelayo García de Arquer, Yung Jin Yoon, Xinzheng Lan, Mengxia Liu, Oleksandr Voznyy, Lethy Krishnan Jagadamma, Abdullah Saud Abbas, Zhenyu Yang, Fengjia Fan, Alexander H. Ip, Pongsakorn Kanjanaboos, Sjoerd Hoogland, Aram Amassian, Jin Young Kim and Edward H. Sargent
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Room-Temperature Solution-Processed n-Doped Zirconium Oxide Cathode Buffer Layer for Efficient and Stable Organic and Hybrid Perovskite Solar Cells

Chemistry of Materials

DOI: 10.1021/acs.chemmater.5b03991

Chih-Yu Chang, Wen-Kuan Huang, Jhao-Lin Wu, Yu-Chia Chang, Kuan-Ting Lee and Chin-Ti Chen
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Nanoporous Polyurea from a Triisocyanate and Boric Acid: A Paradigm of a General Reaction Pathway for Isocyanates and Mineral Acids

Chemistry of Materials

DOI: 10.1021/acs.chemmater.5b03117

Nicholas Leventis, Chariklia Sotiriou-Leventis, Adnan M. Saeed, Suraj Donthula, Hojat Majedi Far, Parwani M. Rewatkar, Helmut Kaiser, J. David Robertson, Hongbing Lu and Gitogo Churu
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Carbon nanotubes reinforced poly(L-lactide) scaffolds fabricated by thermally induced phase separation

In tissue engineering, porous nanocomposite scaffolds can potentially mimic aspects of the nanoscale architecture of the extra-cellular matrix, as well as enhance the mechanical properties required for successful weight-bearing implants. In this paper, we demonstrate that highly porous thermoplastic poly(L-lactide) nanocomposite scaffolds containing different types of functionalized multi-walled carbon nanotubes (CNTs). The nanocomposite scaffolds were manufactured by a thermally induced phase separation method. This experiment produced an uniform distribution of CNTs throughout the scaffold without obvious aggregations for funtionalized CNTs filled scaffolds by scanning electron microscope observation. The CNTs were frequently located on the pore surface, forming rough, hairy nano-textures. The pore size was reduced with the increasing of CNT loading. Parts of PLLA matrix was induced into nanofibrous structures from solid-walled state, which reduced the crystallinity of the PLLA...

Haiyun Ma and Li Xue

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Gas sensing properties and p-type response of ALD TiO 2 coated carbon nanotubes

Amorphous titanium dioxide-coated carbon nanotubes (CNTs) were prepared by atomic layer deposition (ALD) and investigated as sensing layers for resistive NO 2 and O 2 gas sensors. By varying ALD process conditions and CNT structure, heterostructures with different metal oxide grain size, morphology and coating thickness were synthesized. Higher responses were observed with homogeneous and continuous 5.5 nm thick films onto CNTs at an operating temperature of 150 °C, while CNTs decorated with either discontinuous film or TiO 2 nanoparticles showed a weak response close to the one of device made of bare CNTs. An unexpected p-type behavior in presence of the target gas was also noticed, independently of the metal oxide morphology and thickness. Based on previous works, hypotheses were made in order to explain the p-type behavior of TiO 2 /CNT sensors.

Catherine Marichy, Nicola Donato, Mariangela Latino, Marc Georg Willinger, Jean-Philippe Tessonnier, Giovanni Neri and Nicola Pinna

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Fluorescent polymeric assemblies as stimuli-responsive vehicles for drug controlled release and cell/tissue imaging

Polymer assemblies with good biocompatibility, stimuli-responsive properties and clinical imaging capability are desirable carriers for future biomedical applications. Herein, we report on the synthesis of a novel anthracenecarboxaldehyde-decorated poly(N-(4-aminophenyl) methacryl amide-oligoethyleneglycolmonomethylether methacrylate) (P(MAAPAC-MAAP-MAPEG)) copolymer, comprising fluorescent chromophore and acid-labile moiety. This copolymer can assemble into micelles in aqueous solution and shows a spherical shape with well-defined particle size and narrow particle size distribution. The pH-responsive property of the micelles has been evaluated by the change of particle size and the controlled release of guest molecules. The intrinsic fluorescence property endows the micelles with excellent cell/tissue imaging capability. Cell viability evaluation with human hepatocellular carcinoma BEL-7402 cells demonstrates that the micelles are nontoxic. The cellular uptake of the micelles in...

Ying Chang, Yang Li, Shirong Yu, Jie Mao, Cheng Liu, Qi Li, Conghui Yuan, Ning He, Weiang Luo and Lizong Dai

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Influence of the oxygen plasma parameters on the atomic layer deposition of titanium dioxide

The influence of the oxygen plasma parameters on the morphology and optical properties of TiO 2 thin films has been extensively analyzed in plasma enhanced atomic layer deposition (PEALD) processes. Crystalline aggregates with the anatase phase have been identified on the film surface at a low deposition temperature (down to 70 °C) under specific plasma conditions. Up to 70% surface coverage by anatase crystallites is obtained at low oxygen gas flow rates and high plasma power. The hillocks abundance is correlated with high ion flux and electron density and with the resulting enhanced ion bombardment of the surface. Altering the plasma conditions is an important parameter besides temperature to control the morphology of the titania film for specific applications such as photocatalysis or functional optical coatings. Specifically, photocatalytic titania coatings on polymer substrates could benefit of such low temperature PEALD processes with abundant anatase crystallites...

Stephan Ratzsch, Ernst-Bernhard Kley, Andreas Tünnermann and Adriana Szeghalmi

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High integrity interconnection of silver submicron/nanoparticles on silicon wafer by femtosecond laser irradiation

Welding of nanomaterials is a promising technique for constructing nanodevices with robust mechanical properties. To date, fabrication of these devices is limited because of difficulties in restricting damage to the nanomaterials during the welding process. In this work, by utilizing very low fluence (∼900 μ J cm −2 ) femtosecond (fs) laser irradiation, we have produced a metallic interconnection between two adjacent silver (Ag) submicron/nanoparticles which were fixed on a silicon (Si) wafer after fs laser deposition. No additional filler material was used, and the connected particles remain almost damage free. Observation of the morphology before and after joining and finite difference time domain simulations indicate that the interconnection can be attributed to plasmonic excitation in the Ag submicron/nanoparticles. Concentration of energy between the particles leads to local ablation followed by re-deposition of the ablated material to form a bridging link tha...

H Huang, M Sivayoganathan, W W Duley and Y Zhou

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Thermal conductivity of ordered-disordered material: a case study of superionic Ag 2 Te

Thermoelectric devices, which can generate electricity from waste heat, offer an attractive pathway for addressing an important niche in the globally growing landscape of energy demand. In the past few decades, the search for high-efficiency thermoelectrics has been guided by the concept of ‘phonon-glass electron-crystal’ (PGEC), i.e. an ideal thermoelectric material should have high carrier mobility and low thermal conductivity. Although remarkable progress has already been made along this line, the efficiency of thermoelectrics is still too poor to compete with other electricity producing methods. Ordered-disordered material, an emerging trend of high performance thermoelectrics under the concept of PGEC, is a new hot topic in the current thermoelectric research community. Taking superionic phase silver telluride ( α -Ag 2 Te) as an example, we performed a comprehensive study of the thermal transport properties and of its physical mechanism by means of equilibrium...

Tao Ouyang, Xiaoliang Zhang and Ming Hu

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Self-Organization of Nanorods into Ultra-Long Range Two-Dimensional Monolayer End-to-End Network

Nano Letters

DOI: 10.1021/nl504259v

Dahin Kim, Whi Dong Kim, Moon Sung Kang, Shin-Hyun Kim and Doh C. Lee

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High-Speed AFM Images of Thermal Motion Provide Stiffness Map of Interfacial Membrane Protein Moieties

Nano Letters

DOI: 10.1021/nl504478f

Johannes Preiner, Andreas Horner, Andreas Karner, Nicole Ollinger, Christine Siligan, Peter Pohl and Peter Hinterdorfer

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Nearly Exclusive Growth of Small Diameter Semiconducting Single-Wall Carbon Nanotubes from Organic Chemistry Synthetic End-Cap Molecules

Nano Letters

DOI: 10.1021/nl504066f

Bilu Liu, Jia Liu, Hai-Bei Li, Radha Bhola, Edward A. Jackson, Lawrence T. Scott, Alister Page, Stephan Irle, Keiji Morokuma and Chongwu Zhou

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Directionally-Controlled Periodic Collimated Beams of Surface Plasmon Polaritons on Metal Film in Ag Nanowire/Al2O3/Ag Film Composite Structure

Nano Letters

DOI: 10.1021/nl504018q

Hong Wei, Xiaorui Tian, Deng Pan, Li Chen, Zhili Jia and Hongxing Xu

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Preparation and Size Control of Sub-100 nm Pure Nanodrugs

Nano Letters

DOI: 10.1021/nl503598u

Jinfeng Zhang, Yanan Li, Fei-Fei An, Xiaohong Zhang, Xianfeng Chen and Chun-Sing Lee

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In Situ Studies of Carbon Monoxide Oxidation on Platinum and Platinum–Rhenium Alloy Surfaces

The Journal of Physical Chemistry C

DOI: 10.1021/jp509725n

Audrey S. Duke, Randima P. Galhenage, Samuel A. Tenney, Peter Sutter and Donna A. Chen

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Size-Dependent Chemical Reactivity of Silicon Nanocrystals with Water and Oxygen

The Journal of Physical Chemistry C

DOI: 10.1021/jp510592j

Melanie L. Mastronardi, Kenneth K. Chen, Kristine Liao, Gilberto Casillas and Geoffrey A. Ozin

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