1
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Ibne Shoukani H, Nisa S, Bibi Y, Zia M, Sajjad A, Ishfaq A, Ali H. Ciprofloxacin loaded PEG coated ZnO nanoparticles with enhanced antibacterial and wound healing effects. Sci Rep 2024; 14:4689. [PMID: 38409460 DOI: 10.1038/s41598-024-55306-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/22/2024] [Indexed: 02/28/2024] Open
Abstract
Antimicrobial resistance is a worldwide health problem that demands alternative antibacterial strategies. Modified nano-composites can be an effective strategy as compared to traditional medicine. The current study was designed to develop a biocompatible nano-drug delivery system with increased efficacy of current therapeutics for biomedical applications. Zinc oxide nanoparticles (ZnO-NPs) were synthesized by chemical and green methods by mediating with Moringa olifera root extract. The ZnO-NPs were further modified by drug conjugation and coating with PEG (CIP-PEG-ZnO-NPs) to enhance their therapeutic potential. PEGylated ZnO-ciprofloxacin nano-conjugates were characterized by Fourier Transform Infrared spectroscopy, X-ray diffractometry, and Scanning Electron Microscopy. During antibacterial screenings chemically and green synthesized CIP-PEG-ZnO-NPs revealed significant activity against clinically isolated Gram-positive and Gram-negative bacterial strains. The sustainable and prolonged release of antibiotics was noted from the CIP-PEG conjugated ZnO-NPs. The synthesized nanoparticles were found compatible with RBCs and Baby hamster kidney cell lines (BHK21) during hemolytic and MTT assays respectively. Based on initial findings a broad-spectrum nano-material was developed and tested for biomedical applications that eradicated Staphylococcus aureus from the infectious site and showed wound-healing effects during in vivo applications. ZnO-based nano-drug carrier can offer targeted drug delivery, and improved drug stability and efficacy resulting in better drug penetration.
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Affiliation(s)
| | - Sobia Nisa
- Department of Microbiology, The University of Haripur, Haripur, KPK, Pakistan.
| | - Yamin Bibi
- Department of Botany, Rawalpindi Women University, Rawalpindi, Pakistan
| | - Muhammad Zia
- Department of Biotechnology, Quaid-E-Azam University Islamabad, Islamabad, Pakistan
| | - Anila Sajjad
- Department of Biotechnology, Quaid-E-Azam University Islamabad, Islamabad, Pakistan
| | - Afsheen Ishfaq
- Department of Medicine, FRPMC/PAF Hospital Faisal, Karachi, Pakistan
| | - Hussain Ali
- National Institute of Health, Islamabad, Pakistan
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2
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Toyota Y, Sagawa M, Yamashita S, Okayasu Y, Nagai Y, Okada Y, Kobayashi Y. Effect of the bulkiness of alkyl ligands on the excited-state dynamics of ZnO nanocrystals. RSC Adv 2024; 14:2796-2803. [PMID: 38234874 PMCID: PMC10792356 DOI: 10.1039/d3ra05166h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 01/10/2024] [Indexed: 01/19/2024] Open
Abstract
Organic ligands on the surface of nanocrystals (NCs) are extremely important in influencing various physical properties, such as dispersibility, electrical properties, and optical properties. Recent studies have revealed that a slight difference in the molecular structure of aliphatic organic ligands significantly affects the dispersibility of the NCs. On the other hand, the effects of the difference in the molecular structure of ligands on the excited-state dynamics of NCs remain elusive. In this study, we synthesized a series of colloidal ZnO NCs capped with different alkyl phosphonic acids and investigated their photophysical properties using emission decay measurements and transient absorption spectroscopy. The spectral shape and lifetime of the emission originating from the surface oxygen defects of ZnO NCs are almost the same irrespective of the alkyl phosphonic ligands used, indicating that the electronic states of the surface oxygen defects are not affected by the bulkiness of the ligand. On the other hand, the emission quantum yield correlates with the rate of carrier trapping by oxygen defects, suggesting that the rate of carrier trapping reflects the number of oxygen defects. Revealing the detailed relationship between molecular structures of organic ligands and the optical properties of NCs is important for advanced photofunctional superstructures using semiconductor NCs.
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Affiliation(s)
- Yuto Toyota
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu Shiga 525-8577 Japan +81-77-561-3915
| | - Masahiko Sagawa
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology Tokyo 183-8509 Japan
| | - Shohei Yamashita
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology Tokyo 183-8509 Japan
| | - Yoshinori Okayasu
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu Shiga 525-8577 Japan +81-77-561-3915
| | - Yuki Nagai
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu Shiga 525-8577 Japan +81-77-561-3915
| | - Yohei Okada
- Department of Applied Biological Science, Tokyo University of Agriculture and Technology Tokyo 183-8509 Japan
| | - Yoichi Kobayashi
- Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University Kusatsu Shiga 525-8577 Japan +81-77-561-3915
- Precursory Research for Embryonic Science and Technology (PRESTO), Science and Technology Agency (JST) 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
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3
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Abdul Basit M, Aanish Ali M, Masroor Z, Tariq Z, Ho Bang J. Quantum dot-sensitized solar cells: a review on interfacial engineering strategies for boosting efficiency. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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4
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Thin Protective Coatings on Metals Formed by Organic Corrosion Inhibitors in Neutral Media. COATINGS 2022. [DOI: 10.3390/coatings12020149] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Protection of metals in neutral media with pH 5.0–9.0 (in humid atmospheres and various aqueous solutions) can be achieved by formation of thin coatings (up to several tens of nm) on their surfaces due to adsorption and more complex chemical interactions of organic corrosion inhibitors (OCIs) with the metal to be protected. The review contains three sections. The first section deals with coatings formed in aqueous solutions, while the second one, with those formed in organic and water-organic solvents. Here we consider metal protection by coatings mainly formed by the best-known classes of OCI (carboxylates, organophosphates and phosphonates) and estimation of its efficiency. The third section discusses the peculiarities of protection of metals in the vapor-gas phase, i.e., by volatile OCIs, and a relatively new type of metal protection against atmospheric corrosion by the so-called chamber inhibitors. OCIs with relatively low volatility under normal conditions can be used as chamber OCIs. To obtain a protective coating on the surfaces of metal items, they are placed in a chamber inside which an increased concentration of vapors of a chamber OCI is maintained by increasing the temperature. This review mainly focuses on the protection of iron, steels, copper and zinc.
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5
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Nakamura K, Takahashi T, Hosomi T, Yamaguchi Y, Tanaka W, Liu J, Kanai M, Nagashima K, Yanagida T. Surface Dissociation Effect on Phosphonic Acid Self-Assembled Monolayer Formation on ZnO Nanowires. ACS OMEGA 2022; 7:1462-1467. [PMID: 35036808 PMCID: PMC8756575 DOI: 10.1021/acsomega.1c06183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
Understanding the formation process of self-assembled monolayers (SAMs) of organophosphonic acids on ZnO surfaces is essential to designing their various applications, including solar cells, heterogeneous catalysts, and molecular sensors. Here, we report the significant effect of surface dissociation on SAM formation of organophosphonic acids on single-crystalline ZnO nanowire surfaces using infrared spectroscopy. When employing the most conventional solvent-methanol (relative permittivity εr = 32.6), the production of undesired byproducts (layered zinc compounds) on the surface was identified by infrared spectral data and microscopy. On the other hand, a well-defined SAM structure with a tridentate coordination of phosphonic acids on the surface was confirmed when employing toluene (εr = 2.379) or tert-butyl alcohol (εr = 11.22-11.50). The observation of layered zinc compounds as byproducts highlights that the degree of Zn2+ dissociation from the ZnO solid surface into a solvent significantly affects the surface coordination of phosphonic acids during the SAM formation process. Although the ZnO nanowire surface (m-plane) is hydrophilic, the present results suggest that a weaker solvent polarity is preferred to form well-defined phosphonic acid SAMs on ZnO nanowire surfaces without detrimental surface byproducts.
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Affiliation(s)
- Kentaro Nakamura
- Department
of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Institute
for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Tsunaki Takahashi
- Department
of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- JST,
PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takuro Hosomi
- Department
of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- JST,
PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Yu Yamaguchi
- Department
of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Wataru Tanaka
- Department
of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Jiangyang Liu
- Department
of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Masaki Kanai
- Institute
for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Kazuki Nagashima
- Department
of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- JST,
PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takeshi Yanagida
- Department
of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Institute
for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
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6
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Li M, Xie K, Wang G, Zheng J, Cao Y, Cheng X, Li Z, Wei F, Tu H, Tang J. An AIE-Active Ultrathin Polymeric Self-Assembled Monolayer Sensor for Trace Volatile Explosive Detection. Macromol Rapid Commun 2021; 42:e2100551. [PMID: 34610177 DOI: 10.1002/marc.202100551] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 09/23/2021] [Indexed: 12/23/2022]
Abstract
This work has prepared polymeric self-assembled monolayer (SAM) sensors for the detection of trace volatile nitroaromatic compound (NAC) explosives by fluorescence quenching. A typical aggregation-induced emission (AIE) luminogen 1,1,2,2-tetraphenylethene (TPE) polymerizes into PTPE to increase the fluorescence intensity in the SAMs, and the phosphoric acid acts as the anchor group to form stable covalent bonds with the Al2 O3 substrate. This design takes advantage of the high sensitivity and good stability of SAMs, and high fluorescence intensity, and "wire effect" of the conjugated polymers. The polymeric SAM sensors are prepared on the Al2 O3 silicon wafer and testing paper. Both of them show good response speed, reversibility, selectivity, and sensitivity. The detection limits down to 0.07, 0.35, and 4.11 ppm for TNT, DNB, and NB, respectively, are achieved on the inorganic testing paper. Furthermore, due to the higher fluorescence intensity by interlacing and overlapping of fibers, the detection of the paper can be distinguished by naked eyes even with a low-power handheld UV lamp, which provides an experimental basis for the development of cheap and easy trace NAC explosive sensors.
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Affiliation(s)
- Mingliang Li
- Department of Chemistry, The University of Hong Kong, Hong Kong, 999077, China
| | - Kefeng Xie
- School of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Guozhi Wang
- GRIMAT Engineering Institute Co., Ltd, Beijing, 101407, P. R. China.,State Key Laboratory of Advanced Materials for Smart Sensing, General Research Institute for Nonferrous Metals, Beijing, 100088, P. R. China
| | - Jing Zheng
- Department of Chemistry, The University of Hong Kong, Hong Kong, 999077, China
| | - Yingnan Cao
- Department of Chemistry, The University of Hong Kong, Hong Kong, 999077, China
| | - Xiang Cheng
- Department of Chemistry, The University of Hong Kong, Hong Kong, 999077, China
| | - Ziwei Li
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan, 410082, China
| | - Feng Wei
- GRIMAT Engineering Institute Co., Ltd, Beijing, 101407, P. R. China.,State Key Laboratory of Advanced Materials for Smart Sensing, General Research Institute for Nonferrous Metals, Beijing, 100088, P. R. China
| | - Hailing Tu
- GRIMAT Engineering Institute Co., Ltd, Beijing, 101407, P. R. China.,State Key Laboratory of Advanced Materials for Smart Sensing, General Research Institute for Nonferrous Metals, Beijing, 100088, P. R. China
| | - Jinyao Tang
- Department of Chemistry, The University of Hong Kong, Hong Kong, 999077, China.,State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong, 999077, China
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7
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Shokraiyan J, Jahed V, Rabbani M. Study of photocatalytic activity of
Bi
2
WO
6
tire‐like microstructure. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100176] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Javad Shokraiyan
- Department of Chemistry and Biochemistry Ohio University Athens Ohio USA
| | - Vahdat Jahed
- Department of Chemistry and Biochemistry Ohio University Athens Ohio USA
| | - Mahboubeh Rabbani
- Department of Chemistry Iran University of Science and Technology Tehran Iran
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8
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Wang G, Li M, Wei Q, Xiong Y, Li J, Li Z, Tang J, Wei F, Tu H. Design of an AIE-Active Flexible Self-Assembled Monolayer Probe for Trace Nitroaromatic Compound Explosive Detection. ACS Sens 2021; 6:1849-1856. [PMID: 33827212 DOI: 10.1021/acssensors.1c00047] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this work, a series of molecules TPE-PA-n (n = 3-11) were designed with classic aggregation-induced emission (AIE) 1,1,2,2-tetraphenylethene (TPE) for self-assembled monolayers (SAMs), which are applied for the detection of trace nitroaromatic compound (NAC) explosives. Phosphoric acid that acts as an anchor is used to connect with TPE through alkyl chains of various lengths. It is found that the alkyl chains play a role in pulling TPE luminogens to aggregate for light emission, which can affect the fluorescence and sensing performance of the SAMs. Ulteriorly, a model is built to explore the influence of the alkyl chain length on the device performance, which is determined by the three effects of the alkyl chain: flexibility, the coupling effect, and the odd-even effect. By comparison, the functional molecules with the chain length of 8 were finally selected and further applied for NAC sensors. By means of fluorescence spectra, the SAM sensor was proved to have good stability, reversibility, selectivity, and sensitivity, and its detection limits for trinitrotoluene, dinitrotoluene, and nitrobenzene were 1.2, 6.0, and 35.7 ppm, respectively. This work provides new ideas for the design and preparation of flexible sensors for trace NAC detection with high performance, low cost, and easy operation.
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Affiliation(s)
- Guozhi Wang
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- State Key Laboratory of Advanced Materials for Smart Sensing, GRINM Group Co., Ltd., Beijing 100088, China
- General Research Institute for Nonferrous Metals, Beijing 100088, China
| | - Mingliang Li
- Department of Chemistry, The University of Hong Kong, Hong Kong 999077, China
| | - Qianhui Wei
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- State Key Laboratory of Advanced Materials for Smart Sensing, GRINM Group Co., Ltd., Beijing 100088, China
| | - Yuhua Xiong
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- State Key Laboratory of Advanced Materials for Smart Sensing, GRINM Group Co., Ltd., Beijing 100088, China
| | - Jie Li
- Shenzhen Bay Laboratory, Shenzhen 518132, China
| | - Ziwei Li
- College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Jinyao Tang
- Department of Chemistry, The University of Hong Kong, Hong Kong 999077, China
- State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Hong Kong 999077, China
| | - Feng Wei
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- State Key Laboratory of Advanced Materials for Smart Sensing, GRINM Group Co., Ltd., Beijing 100088, China
| | - Hailing Tu
- GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China
- State Key Laboratory of Advanced Materials for Smart Sensing, GRINM Group Co., Ltd., Beijing 100088, China
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9
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Aydın EB, Sezgintürk MK. Ultrasensitive detection of interleukin 1α using 3-phosphonopropionic acid modified FTO surface as an effective platform for disposable biosensor fabrication. Bioelectrochemistry 2020; 138:107698. [PMID: 33254051 DOI: 10.1016/j.bioelechem.2020.107698] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/21/2020] [Accepted: 10/31/2020] [Indexed: 01/09/2023]
Abstract
In this study, we utilized a carboxyalkylphosphonic acid covered fluorine doped tin oxide (FTO) as an electrode material for fabrication of Interleukin 1α (IL-1α) immunosensor. For this aim, anti-IL-1α antibodies were attached on the 3-phosphonopropionic acid (PHP) modified FTO surface covalently. Electrochemical (electrochemical impedance spectroscopy and cyclic voltammetry) and morphological (scanning electron microscopy and atomic force microscopy) characterizations were performed to monitor the successful fabrication of immunoelectrodes. After incubation of anti-IL-1α antibody immobilized FTO electrodes in IL-1α antigen solutions, increases were seen in impedimetric responses. IL-1α antigen was determined in a linear detection range from 0.02 to 2 pg/mL by EIS. The detection limit of the suggested immunosensor was 6 fg/mL. The applicability of the designed biosensor was tested by using human serum and saliva samples and acceptable results were obtained. In addition, high sensitivity, good specificity, low detection limit made the proposed immunosensor a potential technique for IL-1α antigen determination in routine clinical analysis.
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Affiliation(s)
- Elif Burcu Aydın
- Tekirdağ Namık Kemal University, Scientific and Technological Research Center, Tekirdağ Turkey.
| | - Mustafa Kemal Sezgintürk
- Çanakkale Onsekiz Mart University, Faculty of Engineering, Bioengineering Department, Çanakkale, Turkey
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10
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Wang C, Hosomi T, Nagashima K, Takahashi T, Zhang G, Kanai M, Yoshida H, Yanagida T. Phosphonic Acid Modified ZnO Nanowire Sensors: Directing Reaction Pathway of Volatile Carbonyl Compounds. ACS APPLIED MATERIALS & INTERFACES 2020; 12:44265-44272. [PMID: 32867471 DOI: 10.1021/acsami.0c10332] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Surface molecular transformations on nanoscale metal oxides are inherently complex, and directing those reaction pathways is still challenging but important for designing their various applications, including molecular sensing, catalysts, and others. Here, a rational strategy to direct a reaction pathway of volatile carbonyl compounds (nonanal: biomarker) on single-crystalline ZnO nanowire surfaces via molecular modification is demonstrated. The introduction of a methylphosphonic acid modification on the ZnO nanowire surface significantly alters the surface reaction pathway of nonanal via suppressing the detrimental aldol condensation reaction. This is directed by intentionally decreasing the probability of two neighboring molecular activations on the nanowire surface. Spectrometric measurements reveal the correlation between the suppression of the aldol condensation surface reaction and the improvement in the sensor performance. This tailored surface reaction pathway effectively reduces the operating temperature from 200 to 100 °C while maintaining the sensitivity. This is because the aldol condensation product ((E)-2-heptyl-2-undecenal) requires a higher temperature to desorb from the surface. Thus, the proposed facile strategy offers an interesting approach not only for the rational design of metal oxide sensors for numerous volatile carbonyl compounds but also for tailoring various surface reaction pathways on complex nanoscale metal oxides.
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Affiliation(s)
- Chen Wang
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - Takuro Hosomi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Kazuki Nagashima
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tsunaki Takahashi
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
- Japan Science and Technology Agency (JST)-PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Guozhu Zhang
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Masaki Kanai
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Hideto Yoshida
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - Takeshi Yanagida
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
- Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
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11
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Li M, Chen H, Li S, Wang G, Wei F, Guo X, Tu H. Active Self-Assembled Monolayer Sensors for Trace Explosive Detection. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1462-1466. [PMID: 31986886 DOI: 10.1021/acs.langmuir.9b03742] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Trace explosives can be detected with the help of a portable device using a flexible active self-assembled monolayer (SAM). 9,10-diphenyl anthracene with aggregation-induced emission enhancement (AIEE) properties is selected as the fluorophore. Phosphoric acid as the anchor group is linked to the fluorophore through an alkyl chain and able to self-assemble into a dense monolayer on the HfO2 adhesion layer on a flexible substrate. The dense SAMs show high fluorescence intensity, which can be quenched by nitroaromatic compounds (NACs), and have advantages of high response rate, sensitivity, reversibility, and selectivity.
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Affiliation(s)
- Mingliang Li
- GRIMAT Engineering Institute Co., Ltd , Beijing 101407 , P. R. China
- State Key Laboratory of Advanced Materials for Smart Sensing , General Research Institute for Nonferrous Metals , Beijing 100088 , P. R. China
| | - Hongliang Chen
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Shuo Li
- GRIMAT Engineering Institute Co., Ltd , Beijing 101407 , P. R. China
- State Key Laboratory of Advanced Materials for Smart Sensing , General Research Institute for Nonferrous Metals , Beijing 100088 , P. R. China
| | - Guozhi Wang
- GRIMAT Engineering Institute Co., Ltd , Beijing 101407 , P. R. China
- State Key Laboratory of Advanced Materials for Smart Sensing , General Research Institute for Nonferrous Metals , Beijing 100088 , P. R. China
| | - Feng Wei
- GRIMAT Engineering Institute Co., Ltd , Beijing 101407 , P. R. China
- State Key Laboratory of Advanced Materials for Smart Sensing , General Research Institute for Nonferrous Metals , Beijing 100088 , P. R. China
| | - Xuefeng Guo
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , P. R. China
- Department of Materials Science and Engineering, College of Engineering , Peking University , Beijing 100871 , P. R. China
| | - Hailing Tu
- GRIMAT Engineering Institute Co., Ltd , Beijing 101407 , P. R. China
- State Key Laboratory of Advanced Materials for Smart Sensing , General Research Institute for Nonferrous Metals , Beijing 100088 , P. R. China
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12
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Zhang J, Yeromonahos C, Léonard D, Géhin T, Botella C, Grenet G, Benamrouche A, Penuelas J, Monfray S, Chevolot Y, Cloarec JP. Oxidized Titanium Tungsten Surface Functionalization by Silane-, Phosphonic Acid-, or Ortho-dihydroxyaryl-Based Organolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9554-9563. [PMID: 31290675 DOI: 10.1021/acs.langmuir.8b04150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Titanium tungsten (TiW) films (200 nm thick) were cleaned by oxygen plasma, and the resulting oxidized surfaces were functionalized by 3-aminopropylphosphonic acid (APPA), 3-ethoxydimethylsilylpropylamine (APDMES), or dopamine (DA) to form three different organolayers. The three resulting organolayers were characterized by X-ray photoelectron spectroscopy, time-of-flight secondary ion mass spectrometry, and Fourier transform infrared spectroscopy analyses. The stability of each organolayer was investigated. Our results suggested that the Si-O-Ti or Si-O-W bonds formed by the reactions of APDMES with surface-oxidized TiW were rather labile, whereas the catechol layer was less labile. The APPA layer was the most stable of all tested surface modifications.
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Affiliation(s)
- Jian Zhang
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
| | - Christelle Yeromonahos
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
| | - Didier Léonard
- Univ Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Institut des Sciences Analytiques, UMR 5280 , 5, rue de la Doua , F-69100 Villeurbanne , France
| | - Thomas Géhin
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
| | - Claude Botella
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
| | - Geneviève Grenet
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
| | - Aziz Benamrouche
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
| | - José Penuelas
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
| | - Stéphane Monfray
- STMicroelectronics SA , 850, rue Jean Monnet , 38926 Crolles , France
| | - Yann Chevolot
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
| | - Jean-Pierre Cloarec
- Université de Lyon, Institut des Nanotechnologies de Lyon (INL)-UMR CNRS 5270, Ecole Centrale de Lyon , 36 Avenue Guy de Collongue , 69134 Ecully cedex, France
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13
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Yuan X, Wolf N, Mayer D, Offenha Usser A, Wo Rdenweber R. Vapor-Phase Deposition and Electronic Characterization of 3-Aminopropyltriethoxysilane Self-Assembled Monolayers on Silicon Dioxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8183-8190. [PMID: 31144819 DOI: 10.1021/acs.langmuir.8b03832] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Although organosilanes, especially 3-aminopropyltriethoxysilane (APTES), are commonly used to functionalize oxide substrates for a variety of applications ranging from molecular/biosensors and electronics to protective layers, reliable and controlled deposition of these molecules remains a major obstacle. In this study, we use surface potential analyses to record and optimize the gas-phase deposition of APTES self-assembled monolayers (SAMs) and to determine the resulting change of the electrokinetic potential and charge at the solid?liquid interface when the system is exposed to an electrolyte. Using a gas-phase molecular layer deposition setup with an in situ molecule deposition sensor, APTES is deposited at room temperature onto ozone-activated SiO2. The resulting layers are characterized using various techniques ranging from contact angle analysis, ellipsometry, fluorescence microscopy, X-ray photoelectron spectroscopy, and electrokinetic analysis to AFM. It turns out that adequate postdeposition treatment is crucial to the formation of perfect molecular SAMs. We demonstrate how a thick layer of APTES molecules is initially adsorbed at the surface; however, the molecules do not bind to SiO2 and are removed if the film is exposed to an electrolyte. Only if the film is kept in a gaseous environment (preferable at low pressure) for a long enough time do APTES molecules start to bind to the surface and form the SAM layer. During this time, superfluous molecules are removed. The resulting modification of the electrokinetic potential at the surface is analyzed in detail for different states.
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Affiliation(s)
- Xiaobo Yuan
- Institute of Complex Systems?Bioelectronics (ICS-8) , Forschungszentrum Ju?lich , Ju?lich 52428 , Germany
| | - Nikolaus Wolf
- Institute of Complex Systems?Bioelectronics (ICS-8) , Forschungszentrum Ju?lich , Ju?lich 52428 , Germany
| | - Dirk Mayer
- Institute of Complex Systems?Bioelectronics (ICS-8) , Forschungszentrum Ju?lich , Ju?lich 52428 , Germany
| | - Andreas Offenha Usser
- Institute of Complex Systems?Bioelectronics (ICS-8) , Forschungszentrum Ju?lich , Ju?lich 52428 , Germany
| | - Roger Wo Rdenweber
- Institute of Complex Systems?Bioelectronics (ICS-8) , Forschungszentrum Ju?lich , Ju?lich 52428 , Germany
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14
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Nojiri T, Chen CY, Kim DM, Da Silva J, Lee C, Maeno M, McClelland AA, Tse B, Ishikawa-Nagai S, Hatakeyama W, Kondo H, Nagai M. Establishment of perpendicular protrusion of type I collagen on TiO 2 nanotube surface as a priming site of peri-implant connective fibers. J Nanobiotechnology 2019; 17:34. [PMID: 30823919 PMCID: PMC6396481 DOI: 10.1186/s12951-019-0467-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 02/13/2019] [Indexed: 01/29/2023] Open
Abstract
Natural teeth are supported by connective tissue collagen fibers that insert perpendicularly in the tooth cementum. Perpendicular insertion plays an important role in the maintenance of the junction between the oral epithelium and the periodontal connective tissue. Most titanium dental implant surfaces have no micro or macro structure to support perpendicularly oriented collagen attachment. Without this tight biologic seal to resist bacterial invasion and epithelial downgrowth, progressive bone loss in peri-implantitis is seen around dental implants. The purpose of this study was to establish the perpendicularly oriented collagen attachment to titanium oxide nanotube (TNT), and to assess its binding stability. TNT was prepared on the titanium-surface by anodization. Scanning electron microscopy (SEM) showed a regularly aligned TNT with an average 67 nm-diameter when anodized at 30 V for 3 h. Subsequently, collagen type I (CoI) was electrophoretically fused to anodic TNT in native polyacrylamide gel system where negatively charged CoI-C term was perpendicularly navigated to TNT. SEM and atomic force microscopy (AFM) were used to analyze CoI on the TiO2 and TNT surface. Several tens of nanometers of CoI protrusion were recorded by AFM. These protrusions may be long enough to be priming sites for cell-secreted CoI. CoI laid parallel to the titanium surface when fused by a chemical linker. Binding resistance of CoI against drastic ultrasonication was measured by Fourier-transform infrared spectroscopy attenuated total reflection (FTIR-ATR). The electrophoretically fused CoI in the titanium nanotube (TNT-CoIEPF) showed the significantly greatest binding resistance than the other groups (P < 0.01, a 1-way ANOVA and Tukey HSD post hoc test). Furthermore, TNT-CoIEPF surface rejected epithelial cell stretching and epithelial sheet formation. Chemically linked horizontal CoI on titanium oxide (TiO2) facilitated epithelial cell stretching and sheet formation.
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Affiliation(s)
- Toshiki Nojiri
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA
| | - Chia-Yu Chen
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA
| | - David M Kim
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA
| | - John Da Silva
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA
| | - Cliff Lee
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA
| | - Masahiko Maeno
- Department of Adhesive Dentistry, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo, Japan
| | - Arthur A McClelland
- Center for Nanoscale Systems, Harvard University, 11 Oxford St, Cambridge, MA, USA
| | - Bryan Tse
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA
| | - Shigemi Ishikawa-Nagai
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA
| | - Wataru Hatakeyama
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA
| | - Hisatomo Kondo
- Department of Prosthodontics and Oral Implantology, School of Dental Medicine, Iwate Medical University, 19-1 Uchimaru, Morioka, Iwate, Japan
| | - Masazumi Nagai
- Department of Oral Medicine, Infection and Immunity, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA, USA.
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15
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Sun Q, Li J, Le T. Zinc Oxide Nanoparticle as a Novel Class of Antifungal Agents: Current Advances and Future Perspectives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11209-11220. [PMID: 30299956 DOI: 10.1021/acs.jafc.8b03210] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Certain types of nanoparticles, especially zinc oxide nanoparticles (ZnONPs), are widely reported to be capable of the inhibition of harmful bacteria, yeasts, and filamentous fungi. The unique physicochemical and biological properties of ZnONPs also make them attractive to the food industry for use as a promising antifungal agent. This Review thoroughly introduces the preparation methods and antifungal properties of ZnONPs and analyzes their possible antifungal mechanisms. The applicability of ZnONPs in food packaging and nutritional supplements and as an antimicrobial additive is also documented. Moreover, evaluations for biological safety of ZnONPs are objectively reviewed in this paper. The discussions addressed in this Review not only have theoretical significance but also are conducive to the development of food safety, nutrition, and human health. The summarized knowledge and future perspectives outlined here are expected to promote and guide new research toward developing and optimizing the application of ZnONPs as a novel class of antifungal agents to help improve food quality as well as food safety in the near future.
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Affiliation(s)
- Qi Sun
- College of Life Sciences , Chongqing Normal University , No. 37 Chengzhong Road , Chongqing 401331 , People's Republic of China
| | - Jianmei Li
- College of Life Sciences , Chongqing Normal University , No. 37 Chengzhong Road , Chongqing 401331 , People's Republic of China
| | - Tao Le
- College of Life Sciences , Chongqing Normal University , No. 37 Chengzhong Road , Chongqing 401331 , People's Republic of China
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16
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Javedani Bafekr J, Jalal R. In vitro antibacterial activity of ceftazidime, unlike ciprofloxacin, improves in the presence of ZnO nanofluids under acidic conditions. IET Nanobiotechnol 2018; 12:640-646. [PMID: 30095426 DOI: 10.1049/iet-nbt.2017.0119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The development of antibiotic resistance among hospital pathogens has provided a great need for new antimicrobial agents. Zinc oxide nanoparticles (ZnO NPs) in combination with various antibiotics can act as a reducing agent for antibiotic resistance. The aim of this study was to investigate the influence and the mechanism of ZnO NPs on the antimicrobial activity of ciprofloxacin (CP) and ceftazidime (CAZ) against Enterococcus faecalis (E. faecalis) and Acinetobacter baumannii (A. baumannii) bacteria in acidic conditions (pH 5.5). ZnO NPs were synthesised using the solvothermal method and characterised. The MIC90 value of ZnO NPs against A. baumannii was 0.25 mg ml-1 and its highest growth-inhibitory activity was observed at 0.125 mg ml-1 for E. faecalis. The Fourier transform infrared spectroscopy spectra of ZnO NPs treated with antibiotics showed the interaction between ZnO NPs and each of the two antibiotics. ZnO NPs at a sub-inhibitory concentration had no effect on the antibacterial activity of CP and CAZ against E. faecalis and CP against A. baumannii. The action mechanism of ZnO NPs for enhancing the antibacterial efficacy of CAZ against A. baumannii was evaluated. ZnO NPs caused to increase in the antibacterial activity of CAZ against A. baumannii, possibly through the release of Zn2+ and increasing of membrane permeability.
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Affiliation(s)
- Jalil Javedani Bafekr
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Razieh Jalal
- Cell and Molecular Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran.
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17
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Singh V, Kaul S, Singla P, Kumar V, Sandhir R, Chung JH, Garg P, Singhal NK. Xylanase immobilization on magnetite and magnetite core/shell nanocomposites using two different flexible alkyl length organophosphonates: Linker length and shell effect on enzyme catalytic activity. Int J Biol Macromol 2018; 115:590-599. [DOI: 10.1016/j.ijbiomac.2018.04.097] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 04/14/2018] [Accepted: 04/18/2018] [Indexed: 01/01/2023]
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18
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Ishida N, Matsuo K, Imamura K, Craig VSJ. Hydrophobic Attraction Measured between Asymmetric Hydrophobic Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3588-3596. [PMID: 29489375 DOI: 10.1021/acs.langmuir.7b04246] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The interaction forces between silica surfaces modified to different degrees of hydrophobicity were measured using colloidal probe atomic force microscopy (AFM). A highly hydrophobic silica particle was prepared with octadecyltrichlorosilane (OTS), and the interaction forces were measured against silica substrates modified to produce surfaces of varying hydrophobicity. The interaction forces between the highly hydrophobic particle and a completely hydrophilic silicon wafer surface fitted well to the DLVO theory, indicating that no additional (non-DLVO) forces act between the surfaces. When the silicon wafer surface was treated to produce a contact angle of water on surface of 40°, an additional attractive force that is longer ranged than the van der Waals force was observed between the surfaces. The range and magnitude of the attractive force increase with the contact angle of water on the substrate. Beyond the effect on the contact angle, the hydrocarbon chain length and the terminal groups of hydrophobic layer on the substrate only have a minor effect on the magnitude of the force, even when the substrate is terminated with polar carboxyl groups, provided the hydrophobicity of the other surface is high.
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Affiliation(s)
- Naoyuki Ishida
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530 , Japan
| | - Kohei Matsuo
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530 , Japan
| | - Koreyoshi Imamura
- Division of Applied Chemistry, Graduate School of Natural Science and Technology , Okayama University , 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530 , Japan
| | - Vincent S J Craig
- Department of Applied Mathematics, Research School of Physics and Engineering , The Australian National University , Canberra ACT 2601 , Australia
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19
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Holt BA, Gregory SA, Sulchek T, Yee S, Losego MD. Aqueous Zinc Compounds as Residual Antimicrobial Agents for Textiles. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7709-7716. [PMID: 29433308 DOI: 10.1021/acsami.7b15871] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Textiles, especially those worn by patients and medical professionals, serve as vectors for proliferating pathogens. Upstream manufacturing techniques and end-user practices, such as transition-metal embedment in textile fibers or alcohol-based disinfectants, can mitigate pathogen growth, but both techniques have their shortcomings. Fiber embedment requires complete replacement of all fabrics in a facility, and the effects of embedded nanoparticles on human health remain unknown. Alcohol-based, end-user disinfectants are short-lived because they quickly volatilize. In this work, common zinc salts are explored as an end-user residual antimicrobial agent. Zinc salts show cost-effective and long-lasting antimicrobial efficacy when solution-deposited on common textiles, such as nylon, polyester, and cotton. Unlike common alcohol-based disinfectants, these zinc salt-treated textiles mitigate microbial growth for more than 30 days and withstand commercial drying. Polyester fabrics treated with ZnO and ZnCl2 were further explored because of their commercial ubiquity and likelihood for rapid commercialization. ZnCl2-treated textiles were found to retain their antimicrobial coating through abrasive testing, whereas ZnO-treated textiles did not. Scanning electron microscopy, Fourier transform infrared spectroscopy, and differential scanning calorimetry analyses suggest that ZnCl2 likely hydrolyzes and reacts with portions of the polyester fiber, chemically attaching to the fiber, whereas colloidal ZnO simply sediments and binds with weaker physical interactions.
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Affiliation(s)
- Brandon Alexander Holt
- Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University , Atlanta , Georgia 30332 , United States
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20
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Trino LD, Bronze-Uhle ES, Ramachandran A, Lisboa-Filho PN, Mathew MT, George A. Titanium surface bio-functionalization using osteogenic peptides: Surface chemistry, biocompatibility, corrosion and tribocorrosion aspects. J Mech Behav Biomed Mater 2018; 81:26-38. [PMID: 29477893 DOI: 10.1016/j.jmbbm.2018.02.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 02/17/2018] [Accepted: 02/17/2018] [Indexed: 11/24/2022]
Abstract
Titanium (Ti) is widely used in biomedical devices due to its recognized biocompatibility. However, implant failures and subsequent clinical side effects are still recurrent. In this context, improvements can be achieved by designing biomaterials where the bulk and the surface of Ti are independently tailored. The conjugation of biomolecules onto the Ti surface can improve its bioactivity, thus accelerating the osteointegration process. Ti was modified with TiO2, two different spacers, 3-(4-aminophenyl) propionic acid (APPA) or 3-mercaptopropionic acid (MPA) and dentin matrix protein 1 (DMP1) peptides. X-ray photoelectron spectroscopy analysis revealed the presence of carbon and nitrogen for all samples, indicating a success in the functionalization process. Furthermore, DMP1 peptides showed an improved coverage area for the samples with APPA and MPA spacers. Biological tests indicated that the peptides could modulate cell affinity, proliferation, and differentiation. Enhanced results were observed in the presence of MPA. Moreover, the immobilization of DMP1 peptides through the spacers led to the formation of calcium phosphate minerals with a Ca/P ratio near to that of hydroxyapatite. Corrosion and tribocorrosion results indicated an increased resistance to corrosion and lower mass loss in the functionalized materials, showing that this new type of functional material has attractive properties for biomaterials application.
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Affiliation(s)
- Luciana D Trino
- São Paulo State University (Unesp), School of Sciences, Bauru, SP 17033-360, Brazil
| | - Erika S Bronze-Uhle
- São Paulo State University (Unesp), School of Sciences, Bauru, SP 17033-360, Brazil
| | - Amsaveni Ramachandran
- Department of Oral Biology, College of Dentistry, University of Illinois at Chicago, Chicago, IL, 60612, USA
| | - Paulo N Lisboa-Filho
- São Paulo State University (Unesp), School of Sciences, Bauru, SP 17033-360, Brazil.
| | - Mathew T Mathew
- Department of Biomedical Sciences, College of Medicine at Rockford, University of Illinois-School of Medicine at Rockford, Rockford, IL, 61107-1897, USA
| | - Anne George
- Department of Oral Biology, College of Dentistry, University of Illinois at Chicago, Chicago, IL, 60612, USA
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21
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Tudisco C, Cambria MT, Giuffrida AE, Sinatra F, Anfuso CD, Lupo G, Caporarello N, Falanga A, Galdiero S, Oliveri V, Satriano C, Condorelli GG. Comparison Between Folic Acid and gH625 Peptide-Based Functionalization of Fe 3O 4 Magnetic Nanoparticles for Enhanced Cell Internalization. NANOSCALE RESEARCH LETTERS 2018; 13:45. [PMID: 29417388 PMCID: PMC5803153 DOI: 10.1186/s11671-018-2459-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/26/2018] [Indexed: 05/20/2023]
Abstract
A versatile synthetic route based on magnetic Fe3O4 nanoparticle (MNP) prefunctionalization with a phosphonic acid monolayer has been used to covalently bind the gH625 peptide on the nanoparticle surface. gH625 is a membranotropic peptide capable of easily crossing the membranes of various cells including the typical human blood-brain barrier components. A similar synthetic route was used to prepare another class of MNPs having a functional coating based on PEG, rhodamine, and folic acid, a well-known target molecule, to compare the performance of the two cell-penetrating systems (i.e., gH625 and folic acid). Our results demonstrate that the uptake of gH625-decorated MNPs in immortalized human brain microvascular endothelial cells after 24 h is more evident compared to folic acid-functionalized MNPs as evidenced by confocal laser scanning microscopy. On the other hand, both functionalized systems proved capable of being internalized in a brain tumor cell line (i.e., glioblastoma A-172). These findings indicate that the functionalization of MNPs with gH625 improves their endothelial cell internalization, suggesting a viable strategy in designing functional nanostructures capable of first crossing the BBB and, then, of reaching specific tumor brain cells.
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Affiliation(s)
- C Tudisco
- Dipartimento di Scienze Chimiche, Università di Catania, 95125, Catania, Italy
- INSTM UdR di Catania, 95125, Catania, Italy
| | - M T Cambria
- Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania, 95100, Catania, Italy
| | - A E Giuffrida
- Dipartimento di Scienze Chimiche, Università di Catania, 95125, Catania, Italy
- INSTM UdR di Catania, 95125, Catania, Italy
| | - F Sinatra
- Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania, 95100, Catania, Italy
| | - C D Anfuso
- Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania, 95100, Catania, Italy
| | - G Lupo
- Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania, 95100, Catania, Italy
| | - N Caporarello
- Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania, 95100, Catania, Italy
| | - A Falanga
- Dipartimento di Farmacia, Università di Napoli "Federico II", 80134, Napoli, Italy
| | - S Galdiero
- Dipartimento di Farmacia, Università di Napoli "Federico II", 80134, Napoli, Italy
| | - V Oliveri
- Dipartimento di Scienze Chimiche, Università di Catania, 95125, Catania, Italy
| | - C Satriano
- Dipartimento di Scienze Chimiche, Università di Catania, 95125, Catania, Italy
| | - G G Condorelli
- Dipartimento di Scienze Chimiche, Università di Catania, 95125, Catania, Italy.
- INSTM UdR di Catania, 95125, Catania, Italy.
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22
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Ulku I, Morlet-Savary F, Lalevée J, Yagci Acar H. Homogenous photopolymerization of acrylic monomers initiated with ZnO-methacrylate in non-aqueous medium and production of luminescent nanocomposites. Polym Chem 2018. [DOI: 10.1039/c7py02030a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Luminescent ZnO quantum dots coated with methacrylic acid initiate photopolymerization of methylmethacrylate in the absence of hole-scavengers producing luminescent nanocomposites.
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Affiliation(s)
- Irem Ulku
- Koc University
- Chemistry Department
- Istanbul
- Turkey
| | - Fabrice Morlet-Savary
- Institut de Science des Matériaux de Mulhouse IS2 M
- UMR CNRS 7361
- UHA
- 68057 Mulhouse Cedex
- France
| | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse IS2 M
- UMR CNRS 7361
- UHA
- 68057 Mulhouse Cedex
- France
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23
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Characterization of Rose Petals and Fabrication and Characterization of Superhydrophobic Surfaces with High and Low Adhesion. Biomimetics (Basel) 2018. [DOI: 10.1007/978-3-319-71676-3_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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24
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Shanmugam NR, Muthukumar S, Prasad S. A review on ZnO-based electrical biosensors for cardiac biomarker detection. Future Sci OA 2017; 3:FSO196. [PMID: 29134112 PMCID: PMC5674214 DOI: 10.4155/fsoa-2017-0006] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 03/10/2017] [Indexed: 12/20/2022] Open
Abstract
Over the past few decades zinc oxide (ZnO)-based thin films and nanostructures have shown unprecedented performance in a wide range of applications. In particular, owing to high isoelectric point, biocompatibility and other multifunctional characteristics, ZnO has extensively been studied as a transduction material for biosensor development. The fascinating properties of ZnO help retain biological activity of the immobilized biomolecule and help in achieving enhanced sensing performance. As a consequence of recent advancements in this multidisciplinary field, diagnostic biosensors are expanding beyond traditional clinical labs to point-of-care and home settings. Label-free electrical detection of biomarkers has been demonstrated using ZnO-sensing platforms. In this review we highlight the characteristics of ZnO that enable realization of its use in development of point-of-care biosensors toward disease diagnosis, in particular cardiovascular diseases.
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Affiliation(s)
- Nandhinee R Shanmugam
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
| | | | - Shalini Prasad
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA
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25
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Cattani-Scholz A. Functional Organophosphonate Interfaces for Nanotechnology: A Review. ACS APPLIED MATERIALS & INTERFACES 2017; 9:25643-25655. [PMID: 28671811 DOI: 10.1021/acsami.7b04382] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Optimization of interfaces in inorganic-organic device systems depends strongly on understanding both the molecular processes that are involved in surface modification and the effects that such modifications have on the electronic states of the material. In particular, the last several years have seen passivation and functionalization of semiconductor surfaces to be strategies by which to realize devices with superior function by controlling Fermi level energies, band-gap magnitudes, and work functions of semiconducting substrates. Among all of the synthetic routes and deposition methods available for the optimization of functional interfaces in hybrid systems, organophosphonate chemistry has been found to be a powerful tool to control at the molecular level the properties of materials in many different applications. In this Review, we focus on the relevance of organophosphonate chemistry in nanotechnology, giving an overview about some recent advances in surface modification, interface engineering, nanostructure optimization, and biointegration.
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Affiliation(s)
- Anna Cattani-Scholz
- Walter Schottky Institut and Technische Universität München , 85748 Garching, Germany
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26
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Bonvin D, Aschauer UJ, Bastiaansen JAM, Stuber M, Hofmann H, Mionić Ebersold M. Versatility of Pyridoxal Phosphate as a Coating of Iron Oxide Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E202. [PMID: 28758913 PMCID: PMC5575684 DOI: 10.3390/nano7080202] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/21/2017] [Accepted: 07/26/2017] [Indexed: 12/18/2022]
Abstract
Pyridoxal 5'-phosphate (PLP) is the most important cofactor of vitamin B₆-dependent enzymes, which catalyses a wide range of essential body functions (e.g., metabolism) that could be exploited to specifically target highly metabolic cells, such as tumour metastatic cells. However, the use of PLP as a simultaneous coating and targeting molecule, which at once provides colloidal stability and specific biological effects has not been exploited so far. Therefore, in this work iron oxide nanoparticles (IONPs) were coated by PLP at two different pH values to tune PLP bonding (e.g., orientation) at the IONP surface. The surface study, as well as calculations, confirmed different PLP bonding to the IONP surface at these two pH values. Moreover, the obtained PLP-IONPs showed different zeta potential, hydrodynamic radius and agglomeration state, and consequently different uptake by two metastatic-prostate-cancer cell lines (LnCaP and PC3). In LnCaP cells, PLP modified the morphology of IONP-containing intracellular vesicles, while in PC3 cells PLP impacted the amount of IONPs taken up by cells. Moreover, PLP-IONPs displayed high magnetic resonance imaging (MRI) r₂ relaxivity and were not toxic for the two studied cell lines, rendering PLP promising for biomedical applications. We here report the use of PLP simultaneously as a coating and targeting molecule, directly bound to the IONP surface, with the additional high potential for MRI detection.
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Affiliation(s)
- Debora Bonvin
- Powder Technology Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland.
| | - Ulrich J Aschauer
- Department of Chemistry and Biochemistry, University of Bern, Bern 3012, Switzerland.
| | - Jessica A M Bastiaansen
- Department of Radiology, University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne 1011, Switzerland.
- Center of Biomedical Imaging (CIBM), Lausanne 1011, Switzerland.
| | - Matthias Stuber
- Department of Radiology, University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne 1011, Switzerland.
- Center of Biomedical Imaging (CIBM), Lausanne 1011, Switzerland.
| | - Heinrich Hofmann
- Powder Technology Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland.
| | - Marijana Mionić Ebersold
- Powder Technology Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland.
- Department of Radiology, University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne 1011, Switzerland.
- Center of Biomedical Imaging (CIBM), Lausanne 1011, Switzerland.
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27
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Gao F, Aminane S, Bai S, Teplyakov AV. Chemical Protection of Material Morphology: Robust and Gentle Gas-Phase Surface Functionalization of ZnO with Propiolic Acid. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2017; 29:4063-4071. [PMID: 29151674 PMCID: PMC5690571 DOI: 10.1021/acs.chemmater.7b00747] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Chemical functionalization of ZnO surface with an alkyne functional group was successfully achieved by exposing ZnO nanopowder to gas-phase propiolic acid in vacuum, which left the alkyne group available for subsequent chemical modification via the azide-alkyne cycloaddition "click" reaction with benzyl azide. The highly selective formation of a bidentate carboxylate linkage and the reaction of benzyl azide were confirmed by solid-state nuclear magnetic resonance spectroscopy, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Most importantly, scanning electron microscopy revealed that the surface morphology was perfectly preserved by this gas-phase modification, as opposed to the alternative protocols based on liquid phase processing. This simple and precise design can serve as a universal method for the modular functionalization of zinc oxide surface following the initial surface preparation and be further applied to thin films, nanostructures, and powders, where preserving surface morphology during chemical modification is especially important.
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Affiliation(s)
- Fei Gao
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Soraya Aminane
- Université Pierre et Marie Curie, Paris Cedex 05 75005, France
| | - Shi Bai
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Andrew V. Teplyakov
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
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28
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Mohammadpour A, Wiltshire BD, Zhang Y, Farsinezhad S, Askar AM, Kisslinger R, Ren Y, Kar P, Shankar K. 100-fold improvement in carrier drift mobilities in alkanephosphonate-passivated monocrystalline TiO 2 nanowire arrays. NANOTECHNOLOGY 2017; 28:144001. [PMID: 28273048 DOI: 10.1088/1361-6528/aa628e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Single crystal rutile titania nanowires grown by solvothermal synthesis are actively being researched for use as electron transporting scaffolds in perovskite solar cells, in low detection limit ultraviolet photodetectors, in photoelectrochemical water-splitting, and in chemiresistive and electrochemical sensing. The electron drift mobility (μ n ) in solution-grown TiO2 nanowires is very low due to a high density of deep traps, and reduces performance in optoelectronic devices. In this study, the effects of molecular passivation of the nanowire surface by octadecylphosphonic acid (ODPA), on carrier transport in TiO2 nanowire ensembles, were investigated using transient space charge limited current measurements. Infrared spectroscopy indicated the formation of a highly ordered phosphonate monolayer with a high likelihood of bidentate binding of ODPA to the rutile surface. We report the hole drift mobility (μ p ) for the first time in unpassivated solvothermal rutile nanowires to be 8.2 × 10-5 cm2 V-1 s-1 and the use of ODPA passivation resulted in μ p improving by nearly two orders of magnitude to 7.1 × 10-3 cm2 V-1 s-1. Likewise, ODPA passivation produced between a 2 and 3 order of magnitude improvement in μ n from ∼10-5-10-6 cm2 V-1 s-1 to ∼10-3 cm2 V-1 s-1. The bias dependence of the post-transit photocurrent decays in ODPA-passivated nanowires indicated that minority carriers were lost to trapping and/or monomolecular recombination for small values of bias (<5 V). Bimolecular recombination was indicated to be the dominant recombination mechanism at higher bias values.
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Affiliation(s)
- A Mohammadpour
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St, Edmonton, AB T6G 1H9, Canada
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29
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Xiong W, Yu L, Shi H, Phillips DL, Chan WK. Study of Photoinduced Electron Transfer Process in Ruthenium Complex Modified Zinc Oxide Nanoparticles by Ultrafast Time-Resolved Transient Absorption Spectroscopy. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0522-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Oehrlein AN, Sanchez-Diaz A, Goff PC, Ziegler GM, Pappenfus TM, Mann KR, Blank DA, Gladfelter WL. Effects of a phosphonate anchoring group on the excited state electron transfer rates from a terthiophene chromophore to a ZnO nanocrystal. Phys Chem Chem Phys 2017; 19:24294-24303. [DOI: 10.1039/c7cp03784h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Relative to carboxyl-anchored chromophores, phosphonate-anchored dyes are bound more strongly but slow the excited state electron transfer to ZnO nanocrystals.
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Affiliation(s)
- Amanda N. Oehrlein
- Department of Chemistry
- University of Minnesota-Twin Cities
- Minneapolis
- USA
| | | | - Philip C. Goff
- Department of Chemistry
- University of Minnesota-Twin Cities
- Minneapolis
- USA
| | | | - Ted M. Pappenfus
- Division of Science and Mathematics
- University of Minnesota-Morris
- Morris
- USA
| | - Kent R. Mann
- Department of Chemistry
- University of Minnesota-Twin Cities
- Minneapolis
- USA
| | - David A. Blank
- Department of Chemistry
- University of Minnesota-Twin Cities
- Minneapolis
- USA
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31
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Chen C, Karshalev E, Li J, Soto F, Castillo R, Campos I, Mou F, Guan J, Wang J. Transient Micromotors That Disappear When No Longer Needed. ACS NANO 2016; 10:10389-10396. [PMID: 27783486 DOI: 10.1021/acsnano.6b06256] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Transient self-destroyed micromotors that autonomously disappear in biological media at controlled rates upon completing their task, without leaving a toxic residue, are presented. The propulsion and degradation characteristics of the self-destroyed Mg/ZnO, Mg/Si, and Zn/Fe Janus micromotors and single-component Zn micromotors are described. The degradation of the Janus micromotors relies on the different corrosion rates of their core-shell components. Inductively coupled plasma optical emission spectrometry measurements are used to probe the time-dependent degradation of the different constituents of the micromotors. The toxicity of the transient micromotors is discussed toward their potential use in biomedical applications. This concept of transient micromotors offers considerable potential for diverse practical applications in the near future.
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Affiliation(s)
- Chuanrui Chen
- Department of Nanoengineering, University of California, San Diego , La Jolla, California 92093, United States
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, People's Republic of China
| | - Emil Karshalev
- Department of Nanoengineering, University of California, San Diego , La Jolla, California 92093, United States
| | - Jinxing Li
- Department of Nanoengineering, University of California, San Diego , La Jolla, California 92093, United States
| | - Fernando Soto
- Department of Nanoengineering, University of California, San Diego , La Jolla, California 92093, United States
| | - Roxanne Castillo
- Department of Nanoengineering, University of California, San Diego , La Jolla, California 92093, United States
| | - Isaac Campos
- Department of Nanoengineering, University of California, San Diego , La Jolla, California 92093, United States
| | - Fangzhi Mou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, People's Republic of China
| | - Jianguo Guan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology , Wuhan 430070, People's Republic of China
| | - Joseph Wang
- Department of Nanoengineering, University of California, San Diego , La Jolla, California 92093, United States
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32
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McNeill AR, Hyndman AR, Reeves RJ, Downard AJ, Allen MW. Tuning the Band Bending and Controlling the Surface Reactivity at Polar and Nonpolar Surfaces of ZnO through Phosphonic Acid Binding. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31392-31402. [PMID: 27768292 DOI: 10.1021/acsami.6b10309] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
ZnO is a prime candidate for future use in transparent electronics; however, development of practical materials requires attention to factors including control of its unusual surface band bending and surface reactivity. In this work, we have modified the O-polar (0001̅), Zn-polar (0001), and m-plane (101̅0) surfaces of ZnO with phosphonic acid (PA) derivatives and measured the effect on the surface band bending and surface sensitivity to atmospheric oxygen. Core level and valence band synchrotron X-ray photoemission spectroscopy was used to measure the surface band bending introduced by PA modifiers with substituents of opposite polarity dipole moment: octadecylphosphonic acid (ODPA) and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctylphosphonic acid (F13OPA). Both PAs act as surface electron donors, increasing the downward band bending and the strength of the two-dimensional surface electron accumulation layer on all of the ZnO surfaces investigated. On the O-polar (0001̅) and m-plane (101̅0) surfaces, the ODPA modifier produced the largest increase in downward band bending relative to the hydroxyl-terminated unmodified surface of 0.55 and 0.35 eV, respectively. On the Zn-polar (0001) face, the F13OPA modifier gave the largest increase (by 0.50 eV) producing a total downward band bending of 1.00 eV, representing ∼30% of the ZnO band gap. Ultraviolet (UV) photoinduced surface wettability and photoconductivity measurements demonstrated that the PA modifiers are effective at decreasing the sensitivity of the surface toward atmospheric oxygen. Modification with PA derivatives produced a large increase in the persistence of UV-induced photoconductivity and a large reduction in UV-induced changes in surface wettability.
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Affiliation(s)
- Alexandra R McNeill
- MacDiarmid Institute for Advanced Materials and Nanotechnology , Wellington 6140, New Zealand
| | - Adam R Hyndman
- MacDiarmid Institute for Advanced Materials and Nanotechnology , Wellington 6140, New Zealand
| | - Roger J Reeves
- MacDiarmid Institute for Advanced Materials and Nanotechnology , Wellington 6140, New Zealand
| | - Alison J Downard
- MacDiarmid Institute for Advanced Materials and Nanotechnology , Wellington 6140, New Zealand
| | - Martin W Allen
- MacDiarmid Institute for Advanced Materials and Nanotechnology , Wellington 6140, New Zealand
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33
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Park CS, Lee HJ, Lee D, Jamison AC, Galstyan E, Zagozdzon-Wosik W, Freyhardt HC, Jacobson AJ, Lee TR. Semifluorinated Alkylphosphonic Acids Form High-Quality Self-Assembled Monolayers on Ag-Coated Yttrium Barium Copper Oxide Tapes and Enable Filamentization of the Tapes by Microcontact Printing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8623-8630. [PMID: 27482760 DOI: 10.1021/acs.langmuir.6b02368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A custom-designed semifluorinated phosphonic acid, (9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,16-heptadecafluorohexadecyl)phosphonic acid (F8H8PA), and a normal hexadecylphosphonic acid (H16PA) were synthesized and used to generate self-assembled monolayers (SAMs) on commercially available yttrium barium copper oxide (YBCO) tapes. In this study, we wished to evaluate the effectiveness of these monolayer films as coatings for selectively etching YBCO. Initial films formed by solution deposition and manual stamping using a non-patterned polydimethylsiloxane stamp allowed for a comparison of the film-formation characteristics. The resulting monolayers were characterized by X-ray photoelectron spectroscopy (XPS), contact angle goniometry, and polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS). To prepare line-patterned (filamentized) YBCO tapes, standard microcontact printing (μ-CP) procedures were used. The stamped patterns on the YBCO tapes were characterized by scanning electron microscopy (SEM) before and after etching to confirm the effectiveness of the patterning process on the YBCO surface and energy-dispersive X-ray spectroscopy (EDX) to obtain the atomic composition of the exposed interface.
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Affiliation(s)
| | | | - Dahye Lee
- Materials Science and Engineering Program, University of Houston , Houston, Texas 77204, United States
| | | | | | - Wanda Zagozdzon-Wosik
- Department of Electrical and Computer Engineering, University of Houston , Houston, Texas 77004-4005, United States
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34
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Ostapenko A, Klöffel T, Eußner J, Harms K, Dehnen S, Meyer B, Witte G. Etching of Crystalline ZnO Surfaces upon Phosphonic Acid Adsorption: Guidelines for the Realization of Well-Engineered Functional Self-Assembled Monolayers. ACS APPLIED MATERIALS & INTERFACES 2016; 8:13472-13483. [PMID: 27159837 DOI: 10.1021/acsami.6b02190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Functionalization of metal oxides by means of covalently bound self-assembled monolayers (SAMs) offers a tailoring of surface electronic properties such as their work function and, in combination with its large charge carrier mobility, renders ZnO a promising conductive oxide for use as transparent electrode material in optoelectronic devices. In this study, we show that the formation of phosphonic acid-anchored SAMs on ZnO competes with an unwanted chemical side reaction, leading to the formation of surface precipitates and severe surface damage at prolonged immersion times of several days. Combining atomic force microscopy (AFM), X-ray diffraction (XRD), and thermal desorption spectroscopy (TDS), the stability and structure of the aggregates formed upon immersion of ZnO single crystal surfaces of different orientations [(0001̅), (0001), and (101̅0)] in phenylphosphonic acid (PPA) solution were studied. By intentionally increasing the immersion time to more than 1 week, large crystalline precipitates are formed, which are identified as zinc phosphonate. Moreover, the energetics and the reaction pathway of this transformation have been evaluated using density functional theory (DFT), showing that zinc phosphonate is thermodynamically more favorable than phosphonic acid SAMs on ZnO. Precipitation is also found for phosphonic acids with fluorinated aromatic backbones, while less precipitation occurs upon formation of SAMs with phenylphosphinic anchoring units. By contrast, no precipitates are formed when PPA monolayer films are prepared by sublimation under vacuum conditions, yielding smooth surfaces without noticeable etching.
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Affiliation(s)
- Alexandra Ostapenko
- Fachbereich Physik, Molekulare Festkörperphysik and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Renthof 7, 35032 Marburg, Germany
| | - Tobias Klöffel
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer-Chemistry-Center (CCC), Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg , Nägelsbachstrasse 25, 91052 Erlangen, Germany
| | - Jens Eußner
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Klaus Harms
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Stefanie Dehnen
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Bernd Meyer
- Interdisciplinary Center for Molecular Materials (ICMM) and Computer-Chemistry-Center (CCC), Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg , Nägelsbachstrasse 25, 91052 Erlangen, Germany
| | - Gregor Witte
- Fachbereich Physik, Molekulare Festkörperphysik and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg , Renthof 7, 35032 Marburg, Germany
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35
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Hewlett RM, McLachlan MA. Surface Structure Modification of ZnO and the Impact on Electronic Properties. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:3893-3921. [PMID: 26936217 DOI: 10.1002/adma.201503404] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/03/2015] [Indexed: 06/05/2023]
Abstract
Zinc oxide (ZnO) is a widely utilized, versatile material implemented in a diverse range of technological applications, particularly in optoelectronic devices, where its inherent transparency, tunable electronic properties, and accessible nanostructures can be combined to confer superior device properties. ZnO is a complex material with a rich and intricate defect chemistry, and its properties can be extremely sensitive to processing methods and conditions; consequently, surface modification of ZnO using both inorganic and organic species has been explored to control and regulate its surface properties, particularly at heterointerfaces in electronic devices. Here, the properties of ZnO are described in detail, particularly its surface chemistry, along with the role of defects in governing its electronic properties, and methods employed to modulate the behavior of as-grown ZnO. An outline is also given on how the native and modified oxide interact with molecular materials. To illustrate the diverse range of surface modification methods and their subsequent influence on electronic properties, a comprehensive review of the modification of ZnO surfaces at molecular interfaces in hybrid photovoltaic (hPV) and organic photovoltaic (OPV) devices is presented. This is a case study rather than a progress report, aiming to highlight the progress made toward controlling and altering the surface properties of ZnO, and to bring attention to the ways in which this may be achieved by using various interfacial modifiers (IMs).
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Affiliation(s)
- Robert M Hewlett
- Department of Materials & Centre for Plastic Electronics, Royal School of Mines, Imperial College London, Prince Consort Road, London, SW7 2BP, UK
| | - Martyn A McLachlan
- Department of Materials & Centre for Plastic Electronics, Royal School of Mines, Imperial College London, Prince Consort Road, London, SW7 2BP, UK
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36
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Intense visible emission from ZnO/PAAX (X = H or Na) nanocomposite synthesized via a simple and scalable sol-gel method. Sci Rep 2016; 6:23557. [PMID: 27010427 PMCID: PMC4806374 DOI: 10.1038/srep23557] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 03/09/2016] [Indexed: 11/08/2022] Open
Abstract
Intense visible nano-emitters are key objects for many technologies such as single photon source, bio-labels or energy convertors. Chalcogenide nanocrystals have ruled this domain for several decades. However, there is a demand for cheaper and less toxic materials. In this scheme, ZnO nanoparticles have appeared as potential candidates. At the nanoscale, they exhibit crystalline defects which can generate intense visible emission. However, even though photoluminescence quantum yields as high as 60% have been reported, it still remains to get quantum yield of that order of magnitude which remains stable over a long period. In this purpose, we present hybrid ZnO/polyacrylic acid (PAAH) nanocomposites, obtained from the hydrolysis of diethylzinc in presence of PAAH, exhibiting quantum yield systematically larger than 20%. By optimizing the nature and properties of the polymeric acid, the quantum yield is increased up to 70% and remains stable over months. This enhancement is explained by a model based on the hybrid type II heterostructure formed by ZnO/PAAH. The addition of PAAX (X = H or Na) during the hydrolysis of ZnEt2 represents a cost effective method to synthesize scalable amounts of highly luminescent ZnO/PAAX nanocomposites.
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37
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Chen H, Cheng N, Ma W, Li M, Hu S, Gu L, Meng S, Guo X. Design of a Photoactive Hybrid Bilayer Dielectric for Flexible Nonvolatile Organic Memory Transistors. ACS NANO 2016; 10:436-45. [PMID: 26673624 DOI: 10.1021/acsnano.5b05313] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Organic field-effect transistors (OFETs) featuring a photoactive hybrid bilayer dielectric (PHBD) that comprises a self-assembled monolayer (SAM) of photochromic diarylethenes (DAEs) and an ultrathin solution-processed hafnium oxide layer are described here. We photoengineer the energy levels of DAE SAMs to facilitate the charging and discharging of the interface of the two dielectrics, thus yielding an OFET that functions as a nonvolatile memory device. The transistors use light signals for programming and electrical signals for erasing (≤3 V) to produce a large, reversible threshold-voltage shift with long retention times and good nondestructive signal processing ability. The memory effect can be exercised by more than 10(4) memory cycles. Furthermore, these memory cells have demonstrated the capacity to be arrayed into a photosensor matrix on flexible plastic substrates to detect the spatial distribution of a confined light and then store the analog sensor input as a two-dimensional image with high precision over a long period of time.
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Affiliation(s)
- Hongliang Chen
- Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, People's Republic of China
| | - Nongyi Cheng
- Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, People's Republic of China
| | - Wei Ma
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Mingliang Li
- Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, People's Republic of China
| | - Shuxin Hu
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Lin Gu
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Sheng Meng
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Xuefeng Guo
- Center for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, People's Republic of China
- Department of Materials Science and Engineering, College of Engineering, Peking University , Beijing 100871, People's Republic of China
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38
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Bhushan B. Characterization of Rose Petals and Fabrication and Characterization of Superhydrophobic Surfaces with High and Low Adhesion. Biomimetics (Basel) 2016. [DOI: 10.1007/978-3-319-28284-8_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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39
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Li Z, Yuan Y. Preparation and characterization of superhydrophobic composite coatings on a magnesium–lithium alloy. RSC Adv 2016. [DOI: 10.1039/c6ra13194h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report a superhydrophobic organophosphonate composite coating on a magnesium–lithium alloy surface, which exhibits excellent water-repellent and corrosion resistance properties.
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Affiliation(s)
- Zhijun Li
- Department of Chemistry
- Queen's University
- Kingston
- Canada
| | - Yi Yuan
- Department of Chemistry
- Zhejiang University
- Hangzhou
- P. R. China
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40
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Simonelli G, Arancibia E. Effects of size and surface functionalization of zinc oxide (ZnO) particles on interactions with bovine serum albumin (BSA). J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.07.075] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Effects of interface modification with self-assembled monolayers on the photovoltaic performance of CdS quantum dots sensitized solar cells. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.190] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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42
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Kim Y, Choi SS, Bae JW, Kim JS. Effects of ZnO content on microstructure and properties of maleated EPDM/zinc oxide composites. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1330-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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43
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Li Y, Wang L, Natarajan B, Tao P, Benicewicz BC, Ullal C, Schadler LS. Bimodal “matrix-free” polymer nanocomposites. RSC Adv 2015. [DOI: 10.1039/c4ra16939e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
“Matrix-free” nanocomposites with a bimodal population of polymer brushes for optimizing filler loading while maintaining controlled dispersion.
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Affiliation(s)
- Ying Li
- Department of Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
| | - Lei Wang
- Department of Chemistry and Biochemistry
- University of South Carolina
- Columbia
- USA
| | - Bharath Natarajan
- Department of Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
| | - Peng Tao
- Department of Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
- State Key Laboratory of Metal Matrix Composites
| | - Brian C. Benicewicz
- Department of Chemistry and Biochemistry
- University of South Carolina
- Columbia
- USA
| | - Chaitanya Ullal
- Department of Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
| | - Linda S. Schadler
- Department of Materials Science and Engineering
- Rensselaer Polytechnic Institute
- Troy
- USA
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44
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Effects of ZnO nanohexagons and nanorods on the fluorescence behavior of metallophthalocyanines. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Braid JL, Koldemir U, Sellinger A, Collins RT, Furtak TE, Olson DC. Conjugated phosphonic acid modified zinc oxide electron transport layers for improved performance in organic solar cells. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19229-19234. [PMID: 25329245 DOI: 10.1021/am505182c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Phosphonic acid modification of zinc oxide (ZnO) electron transport layers in inverted P3HT:ICBA solar cells was studied to determine the effect of conjugated linkages between the aromatic and phosphonic acid attachment groups. For example, zinc oxide treated with 2,6-difluorophenylvinylphosphonic acid, having a conjugated vinyl group connecting the aromatic moiety to the phosphonic acid group, showed a 0.78 eV decrease in the effective work function versus unmodified ZnO, whereas nonconjugated 2,6-difluorophenylethylphosphonic acid resulted in a 0.57 eV decrease, as measured by Kelvin probe. This resulted in an average power conversion efficiency of 5.89% for conjugated 2,6-difluorophenyvinylphosphonic acid modified solar cells, an improvement over unmodified (5.24%) and nonconjugated phosphonic acid modified devices (5.64%), indicating the importance of the conjugated linkage.
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Affiliation(s)
- Jennifer L Braid
- Department of Physics and §Department of Chemistry and Geochemistry, Colorado School of Mines , Golden, Colorado 80401, United States
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Characterization of impedance biosensing performance of single and nanopore arrays of anodic porous alumina fabricated by focused ion beam (FIB) milling. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.07.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Pouran HM, Martin FL, Zhang H. Measurement of ZnO Nanoparticles Using Diffusive Gradients in Thin Films: Binding and Diffusional Characteristics. Anal Chem 2014; 86:5906-13. [DOI: 10.1021/ac500730s] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Hamid M. Pouran
- Lancaster Environment Centre and ‡Centre for Biophotonics, Lancaster University, Bailrigg, Lancaster, LA1 4YQ, United Kingdom
| | - Francis L. Martin
- Lancaster Environment Centre and ‡Centre for Biophotonics, Lancaster University, Bailrigg, Lancaster, LA1 4YQ, United Kingdom
| | - Hao Zhang
- Lancaster Environment Centre and ‡Centre for Biophotonics, Lancaster University, Bailrigg, Lancaster, LA1 4YQ, United Kingdom
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Pal S, Sharma MK, Danielsson B, Willander M, Chatterjee R, Bhand S. A miniaturized nanobiosensor for choline analysis. Biosens Bioelectron 2014; 54:558-64. [DOI: 10.1016/j.bios.2013.11.057] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 11/08/2013] [Accepted: 11/20/2013] [Indexed: 11/27/2022]
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Jayaraman S, Kumar PS, Mangalaraj D, Rajarathnam D, Ramakrishna S, Srinivasan MP. Enhanced luminescence and charge separation in polythiophene-grafted, gold nanoparticle-decorated, 1-D ZnO nanorods. RSC Adv 2014. [DOI: 10.1039/c3ra45953e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Kalska-Szostko B, Rogowska M, Satuła D. Organophosphorous functionalization of magnetite nanoparticles. Colloids Surf B Biointerfaces 2013; 111:656-62. [DOI: 10.1016/j.colsurfb.2013.07.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 07/01/2013] [Accepted: 07/02/2013] [Indexed: 11/26/2022]
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