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You searched for: Journal ACS Applied Materials & Interfaces Remove constraint Journal: ACS Applied Materials & Interfaces Publication Year 2015 Remove constraint Publication Year: 2015 Source 2015 v.7 no.9 Remove constraint Source: 2015 v.7 no.9
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1. Achieving High Dielectric Constant and Low Loss Property in a Dipolar Glass Polymer Containing Strongly Dipolar and Small-Sized Sulfone Groups

Author:
Wei, Junji; Zhang, Zhongbo; Tseng, Jung-Kai; Treufeld, Imre; Liu, Xiaobo; Litt, Morton H.; Zhu, Lei
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5248-5257
ISSN:
1944-8252
Subject:
energy density; glass; glass transition; glass transition temperature; hysteresis; polymerization; polymethylmethacrylate
Abstract:
... In this report, a dipolar glass polymer, poly(2-(methylsulfonyl)ethyl methacrylate) (PMSEMA), was synthesized by free radical polymerization of the corresponding methacrylate monomer. Due to the large dipole moment (4.25 D) and small size of the side-chain sulfone groups, PMSEMA exhibited a strong γ transition at a temperature as low as −110 °C at 1 Hz, about 220 °C below its glass transition temp ...
DOI:
10.1021/am508488w

2. A FRET-based Ratiometric Fluorescent Probe for Nitroxyl Detection in Living Cells

Author:
Zhang, Huatang; Liu, Ruochuan; Tan, Yi; Xie, William Haowei; Lei, Haipeng; Cheung, Hon-Yeung; Sun, Hongyan
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5438-5443
ISSN:
1944-8252
Subject:
cell biology; color; energy transfer; fluorescent dyes; nitric oxide; synthesis
Abstract:
... HNO has recently been found to possess distinct biological functions from NO. Studying the biological functions of HNO calls for the development of sensitive and selective fluorescent probes. Herein, we designed and synthesized a FRET-based ratiometric probe to detect HNO in living cells. Our studies revealed that the probe is capable of detecting HNO in a rapid and ratiometric manner under physio ...
DOI:
10.1021/am508987v

3. Assessing the Potential Roles of Silicon and Germanium Phthalocyanines in Planar Heterojunction Organic Photovoltaic Devices and How Pentafluoro Phenoxylation Can Enhance π–π Interactions and Device Performance

Author:
Lessard, Benoît H.; White, Robin T.; AL-Amar, Mohammad; Plint, Trevor; Castrucci, Jeffrey S.; Josey, David S.; Lu, Zheng-Hong; Bender, Timothy P.
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5076-5088
ISSN:
1944-8252
Subject:
X-ray diffraction; energy; germanium; harvesting; heat treatment; photovoltaic cells; silicon
Abstract:
... In this study, we have assessed the potential application of dichloro silicon phthalocyanine (Cl₂-SiPc) and dichloro germanium phthalocyanine (Cl₂-GePc) in modern planar heterojunction organic photovoltaic (PHJ OPV) devices. We have determined that Cl₂-SiPc can act as an electron donating material when paired with C₆₀ and that Cl₂-SiPc or Cl₂-GePc can also act as an electron acceptor material when ...
DOI:
10.1021/am508491v

4. Atomic Layer Deposition of Undoped TiO2 Exhibiting p-Type Conductivity

Author:
Iancu, Andrei T.; Logar, Manca; Park, Joonsuk; Prinz, Fritz B.
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5134-5140
ISSN:
1944-8252
Subject:
electrical properties; oxygen; semiconductors; titanium dioxide
Abstract:
... With prominent photocatalytic applications and widespread use in semiconductor devices, TiO₂ is one of the most popular metal oxides. However, despite its popularity, it has yet to achieve its full potential due to a lack of effective methods for achieving p-type conductivity. Here, we show that undoped p-type TiO₂ films can be fabricated by atomic layer deposition (ALD) and that their electrical ...
DOI:
10.1021/am5072223

5. Bifunctional Magnetic-Fluorescent Nanoparticles: Synthesis, Characterization, and Cell Imaging

Author:
Lu, Yanjiao; Zheng, Yang; You, Shusen; Wang, Feng; Gao, Zhuo; Shen, Jie; Yang, Wantai; Yin, Meizhen
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5226-5232
ISSN:
1944-8252
Subject:
ambient temperature; biocompatibility; cell viability; coatings; fluorescence; image analysis; nanoparticles; polymers; spectroscopy; transmission electron microscopy
Abstract:
... A new type of bifunctional magnetic-fluorescent Fe₃O₄@SiO₂–PDI–PAA/Ca²⁺ nanoparticles has been prepared by coating PDI-cored star polymers (PDI–PAA) onto the surface of Fe₃O₄@SiO₂ core–shell nanostructures. The morphology and properties of the composite nanoparticles are investigated by transmission electron microscopy, ultraviolet–visible spectrometry, fluorescence spectrometry, and vibrating sam ...
DOI:
10.1021/am508266p

6. Chelating Agent-Free, Vapor-Assisted Crystallization Method to Synthesize Hierarchical Microporous/Mesoporous MIL-125 (Ti)

Author:
McNamara, Nicholas D.; Hicks, Jason C.
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5338-5346
ISSN:
1944-8252
Subject:
active sites; adsorption; biomass; catalysts; catalytic activity; coordination polymers; crystallization; diameter; oxidation; petroleum; porous media; thiophene
Abstract:
... Titanium-based microporous heterogeneous catalysts are widely studied but are often limited by the accessibility of reactants to active sites. Metal–organic frameworks (MOFs), such as MIL-125 (Ti), exhibit enhanced surface areas due to their high intrinsic microporosity, but the pore diameters of most microporous MOFs are often too small to allow for the diffusion of larger reactants (>7 Å) releva ...
DOI:
10.1021/am508799d

7. Conjugation of Iron Oxide Nanoparticles with RGD-Modified Dendrimers for Targeted Tumor MR Imaging

Author:
Yang, Jia; Luo, Yu; Xu, Yanhong; Li, Jingchao; Zhang, Zaixian; Wang, Han; Shen, Mingwu; Shi, Xiangyang; Zhang, Guixiang
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5420-5428
ISSN:
1944-8252
Subject:
acetylation; amines; cell viability; hemolysis; image analysis; iron oxides; mice; nanoparticles; neoplasms; receptors
Abstract:
... This article reports a new approach for the synthesis of ultrasmall iron oxide nanoparticles (NPs) conjugated with Arg-Gly-Asp (RGD)-modified dendrimers (G5.NHAc-RGD-Fe₃O₄ NPs) as a platform for targeted magnetic resonance (MR) imaging of C6 glioma cells. Ultrasmall Fe₃O₄ NPs synthesized via a solvothermal route were conjugated with RGD peptide-modified generation-5 poly(amidoamine) dendrimers (G5 ...
DOI:
10.1021/am508983n

8. Controlled van der Waals Epitaxy of Monolayer MoS2 Triangular Domains on Graphene

Author:
Ago, Hiroki; Endo, Hiroko; Solís-Fernández, Pablo; Takizawa, Rina; Ohta, Yujiro; Fujita, Yusuke; Yamamoto, Kazuhiro; Tsuji, Masaharu
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5265-5273
ISSN:
1944-8252
Subject:
crystals; graphene; optical properties; photoluminescence; photons; silica; van der Waals forces; vapors
Abstract:
... Multilayered heterostructures of two-dimensional materials have recently attracted increased interest because of their unique electronic and optical properties. Here, we present chemical vapor deposition (CVD) growth of triangular crystals of monolayer MoS₂ on single-crystalline hexagonal graphene domains which are also grown by CVD. We found that MoS₂ grows selectively on the graphene domains rat ...
DOI:
10.1021/am508569m

9. Cosensitization of D-A-π-A Quinoxaline Organic Dye: Efficiently Filling the Absorption Valley with High Photovoltaic Efficiency

Author:
Pei, Kai; Wu, Yongzhen; Li, Hui; Geng, Zhiyuan; Tian, He; Zhu, Wei-Hong
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5296-5304
ISSN:
1944-8252
Subject:
absorption; chemical structure; dyes; thiophene; volatile organic compounds; wavelengths
Abstract:
... In the efficient cosensitization, the pure organic sensitizers with high molecular extinction coefficients and long wavelength response are highly preferable since the dye loading amount for each dye in cosensitization is decreased with respect to single dye sensitization. A D-A-π-A featured quinoxaline organic sensitizer IQ21 is specifically designed. The high conjugation building block of 4H-cyc ...
DOI:
10.1021/am508623e

10. Designed Fabrication and Characterization of Three-Dimensionally Ordered Arrays of Core–Shell Magnetic Mesoporous Carbon Microspheres

Author:
Yuan, Kaiping; Che, Renchao; Cao, Qi; Sun, Zhenkun; Yue, Qin; Deng, Yonghui
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5312-5319
ISSN:
1944-8252
Subject:
absorption; carbon; iron oxides; porous media; silica
Abstract:
... A confined interface coassembly coating strategy based on three-dimensional (3-D) ordered macroporous silica as the nanoreactor was demonstrated for the designed fabrication of novel 3-D ordered arrays of core–shell microspheres consisting of Fe₃O₄ cores and ordered mesoporous carbon shells. The obtained 3-D ordered arrays of Fe₃O₄@mesoporous carbon materials possess two sets of periodic structure ...
DOI:
10.1021/am508683p

11. Diamond Network: Template-Free Fabrication and Properties

Author:
Zhuang, Hao; Yang, Nianjun; Fu, Haiyuan; Zhang, Lei; Wang, Chun; Huang, Nan; Jiang, Xin
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5384-5390
ISSN:
1944-8252
Subject:
batteries; electrochemistry; energy conversion; films (materials); fuel cells; nanocomposites; nanocrystals; porosity; water treatment
Abstract:
... A porous diamond network with three-dimensionally interconnected pores is of technical importance but difficult to be produced. In this contribution, we demonstrate a simple, controllable, and “template-free” approach to fabricate diamond networks. It combines the deposition of diamond/β-SiC nanocomposite film with a wet-chemical selective etching of the β-SiC phase. The porosity of these networks ...
DOI:
10.1021/am508851r

12. Direct Visualization of Lead Corona and Its Nanomolar Colorimetric Detection Using Anisotropic Gold Nanoparticles

Author:
Dwivedi, Charu; Chaudhary, Abhishek; Gupta, Abhishek; Nandi, Chayan K.
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5039-5044
ISSN:
1944-8252
Subject:
nanogold; detection limit; colorimetry; heavy metals; dithiothreitol; toxicity; metal ions
Abstract:
... The study presents dithiothreitol (DTT) functionalized anisotropic gold nanoparticles (GNP) based colorimetric sensor for detection of toxic lead ions in water. Our results demonstrate the selectivity and sensitivity of the developed sensor over various heavy metal ions with detection limit of ∼9 nM. The mechanism of sensing is explained on the basis of unique corona formation around the DTT funct ...
DOI:
10.1021/am507495j

13. Dual-Emissive Nanohybrid for Ratiometric Luminescence and Lifetime Imaging of Intracellular Hydrogen Sulfide

Author:
Yu, Qi; Zhang, Kenneth Yin; Liang, Hua; Zhao, Qiang; Yang, Tianshe; Liu, Shujuan; Zhang, Chuanqi; Shi, Zhengjian; Xu, Wenjuan; Huang, Wei
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5462-5470
ISSN:
1944-8252
Subject:
hydrogen sulfide; image analysis; iridium; microscopy; nanoparticles; phosphorescence; photoluminescence; porous media; silica
Abstract:
... We design a nanohybrid for the detection of hydrogen sulfide (H₂S) based on mesoporous silica nanoparticles (MSNs). A phosphorescent iridium(III) complex and a specific H₂S-sensitive merocyanine derivative are embedded into the nanohybrid. It exhibits a unique dual emission that is ascribed to the iridium(III) complex and the merocyanine derivative, respectively. Upon addition of sodium hydrogen s ...
DOI:
10.1021/am5091534

14. Effects of Hydroxylation and Silanization on the Surface Properties of ZnO Nanowires

Author:
García Núñez, C.; Sachsenhauser, M.; Blashcke, B.; García Marín, A.; Garrido, Jose A.; Pau, Jose L.
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5331-5337
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; biochemical compounds; biosensors; contact angle; electrical properties; energy; hydrophobicity; hydroxylation; irradiation; nanowires; ultraviolet radiation; zinc oxide
Abstract:
... Silanization is commonly used to form bonds between inorganic materials and biomolecules as a step in the surface preparation of solid-state biosensors. This work investigates the effects of silanization with amino-propyldiethoxymethylsilane on hydroxylated sidewalls of zinc oxide (ZnO) nanowires (NWs). The surface properties and electrical characteristics of NWs are analyzed by different techniqu ...
DOI:
10.1021/am508752m

15. Efficient CO2 Capture by Functionalized Graphene Oxide Nanosheets as Fillers To Fabricate Multi-Permselective Mixed Matrix Membranes

Author:
Li, Xueqin; Cheng, Youdong; Zhang, Haiyang; Wang, Shaofei; Jiang, Zhongyi; Guo, Ruili; Wu, Hong
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5528-5537
ISSN:
1944-8252
Subject:
carbon dioxide; diffusivity; ethylene oxide; graphene oxide; mercury; nanosheets; permeability; polyethylene; solubility
Abstract:
... A novel multi-permselective mixed matrix membrane (MP-MMM) is developed by incorporating versatile fillers functionalized with ethylene oxide (EO) groups and an amine carrier into a polymer matrix. The as-prepared MP-MMMs can separate CO₂ efficiently because of the simultaneous enhancement of diffusivity selectivity, solubility selectivity, and reactivity selectivity. To be specific, MP-MMMs were ...
DOI:
10.1021/acsami.5b00106

16. Electric Field-Induced Giant Strain and Photoluminescence-Enhancement Effect in Rare-Earth Modified Lead-Free Piezoelectric Ceramics

Author:
Yao, Qirong; Wang, Feifei; Xu, Feng; Leung, Chung Ming; Wang, Tao; Tang, Yanxue; Ye, Xiang; Xie, Yiqun; Sun, Dazhi; Shi, Wangzhou
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5066-5075
ISSN:
1944-8252
Subject:
ceramics; electric field; photoluminescence; physical phases
Abstract:
... In this work, an electric field-induced giant strain response and excellent photoluminescence-enhancement effect was obtained in a rare-earth ion modified lead-free piezoelectric system. Pr³⁺-modified 0.93(Bi₀.₅Na₀.₅)TiO₃-0.07BaTiO₃ ceramics were designed and fabricated by a conventional fabrication process. The ferroelectric, dielectric, piezoelectric, and photoluminescence performances were syst ...
DOI:
10.1021/acsami.5b00420

17. Electrospun Amplified Fiber Optics

Author:
Morello, Giovanni; Camposeo, Andrea; Moffa, Maria; Pisignano, Dario
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5213-5218
ISSN:
1944-8252
Subject:
ambient temperature; dyes; fiber optics; fiber quality; polymers
Abstract:
... All-optical signal processing is the focus of much research aiming to obtain effective alternatives to existing data transmission platforms. Amplification of light in fiber optics, such as in Erbium-doped fiber amplifiers, is especially important for efficient signal transmission. However, the complex fabrication methods involving high-temperature processes performed in a highly pure environment s ...
DOI:
10.1021/am508046g

18. Electrospun Fibrous Mats with Conjugated Tetraphenylethylene and Mannose for Sensitive Turn-On Fluorescent Sensing of Escherichia coli

Author:
Zhao, Long; Chen, Yufei; Yuan, Jiang; Chen, Maohua; Zhang, Hong; Li, Xiaohong
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5177-5186
ISSN:
1944-8252
Subject:
1,6-hexanediamine; Escherichia coli; bacteria; bovine serum albumin; environmental monitoring; equations; ethylene; ethylene glycol; fimbriae; fluorescence; food safety; glucose; hydrophilicity; mannose; microbial detection; polyethylene glycol
Abstract:
... A rapid and sensitive detection of microbes in water and biological fluids is a key requirement in water and food safety, environmental monitoring, and clinical diagnosis and treatment. In the current study, electrospun polystyrene-co-maleic anhydride (PSMA) fibers with conjugated mannose and tetraphenylethylene (TPE) were developed for Escherichia coli (E. coli) detection, taking advantage of the ...
DOI:
10.1021/am507593p

19. Enhanced Performance Using an SU-8 Dielectric Interlayer in a Bulk Heterojunction Organic Solar Cell

Author:
Pang, Christina; Chellappan, Vijila; Yim, Jong Hyuk; Tan, Mein Jin; Goh, Glen Tai Wei; Lee, Soonil; Zhang, Jie; de Mello, John
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5219-5225
ISSN:
1944-8252
Subject:
electron transfer; photovoltaic cells; zinc oxide
Abstract:
... The effect of inserting an SU-8 dielectric interlayer into inverted bulk heterojunction (BHJ) organic solar cells (OSCs) was studied. Insertion of an ultrathin layer of SU-8 between the zinc oxide (ZnO) electron transport layer and the photoactive layer resulted in a smoother interface and a 14% enhancement in power conversion efficiency. The properties of devices with and without an SU-8 interlay ...
DOI:
10.1021/am508177p

20. Enzyme-Specific Sensors via Aggregation of Charged p-Phenylene Ethynylenes

Author:
Hill, Eric H.; Zhang, Yue; Evans, Deborah G.; Whitten, David G.
Source:
ACS Applied Materials & Interfaces 2015 v.7 no.9 pp. 5550-5560
ISSN:
1944-8252
Subject:
acetylcholinesterase; biomarkers; enzyme activity; enzyme kinetics; fluorescence; heart; molecular dynamics; nerve agents; pesticides; phospholipase A1; phospholipase A2; phospholipase C; phospholipases; pollutants
Abstract:
... Chemical and biological sensors are sought for their ability to detect enzymes as biomarkers for symptoms of various disorders, or the presence of chemical pollutants or poisons. p-Phenylene ethynylene oligomers with pendant charged groups have been recently shown to have ideal photophysical properties for sensing. In this study, one anionic and one cationic oligomer are combined with substrates t ...
DOI:
10.1021/acsami.5b00185