51
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Chung PT, Chiou SH, Tseng CY, Chiang AST. Preparation and Evaluation of a Zirconia/Oligosiloxane Nanocomposite for LED Encapsulation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:9986-9993. [PMID: 27029544 DOI: 10.1021/acsami.6b02082] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A zirconia/oligosiloxane nanocomposite encapsulant has been developed and tested in a high-power LED package against commercial silicone resins. The composite was a marriage of zirconia nanocrystals modified with butyric acid (BA) and 3-methacryloxy propyl trimethoxysilane (MPTMS) and a high-index methacryloxy-oligosiloxanes resin made from MPTMS plus dimethyl, diphenyl, and triphenyl silanes. The modified zirconia had an index of 1.762 (@589 nm) and was dispersible in many solvents. The oligosiloxane resin, however, had an index of 1.5413 with good encapsulation properties and low viscosity allowing the incorporation of more zirconia. The final nanocomposite showed a refractive index of 1.625 with high transparency and a wavelength-independent scattering, both desirable for the light extraction from LED. When tested in a high-power LED package, the composite encapsulant resulted in 13% more light output compared to the commercial encapsulant (OE-6630, Dow Corning Corp.) and showed longer than 1000 h of lifetime (L70) under the steady-state Temperature Humidity Bias (THB) test.
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Affiliation(s)
- Pao-Tang Chung
- Department of Chemical & Materials Engineering, National Central University , JungLi, TaoYuan, Taiwan, 32054 ROC
| | - Shian-Hau Chiou
- Department of Chemical & Materials Engineering, National Central University , JungLi, TaoYuan, Taiwan, 32054 ROC
| | - Chin-Yao Tseng
- Department of Chemical & Materials Engineering, National Central University , JungLi, TaoYuan, Taiwan, 32054 ROC
| | - Anthony Shiaw-Tseh Chiang
- Department of Chemical & Materials Engineering, National Central University , JungLi, TaoYuan, Taiwan, 32054 ROC
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52
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Grisorio R, Debellis D, Suranna GP, Gigli G, Giansante C. The Dynamic Organic/Inorganic Interface of Colloidal PbS Quantum Dots. Angew Chem Int Ed Engl 2016; 55:6628-33. [DOI: 10.1002/anie.201511174] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 02/19/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Roberto Grisorio
- CNR NANOTEC-; Istituto di Nanotecnologia; Via Monteroni 73100 Lecce Italy
- DICATECh-Dipartimento di Ingegneria Civile; Ambientale, del Territorio; Edile e di Chimica; Politecnico di Bari; Via Orabona 4 70125 Bari Italy
| | - Doriana Debellis
- Dipartimento di Matematica e Fisica “E. De Giorgi”; Università del Salento; Via per Arnesano 73100 Lecce Italy
| | - Gian Paolo Suranna
- CNR NANOTEC-; Istituto di Nanotecnologia; Via Monteroni 73100 Lecce Italy
- DICATECh-Dipartimento di Ingegneria Civile; Ambientale, del Territorio; Edile e di Chimica; Politecnico di Bari; Via Orabona 4 70125 Bari Italy
| | - Giuseppe Gigli
- CNR NANOTEC-; Istituto di Nanotecnologia; Via Monteroni 73100 Lecce Italy
- Dipartimento di Matematica e Fisica “E. De Giorgi”; Università del Salento; Via per Arnesano 73100 Lecce Italy
| | - Carlo Giansante
- Center for Biomolecular Nanotechnologies@UNILE; Istituto Italiano di Tecnologia; Via Barsanti 73010 Arnesano Italy
- CNR NANOTEC-; Istituto di Nanotecnologia; Via Monteroni 73100 Lecce Italy
- Dipartimento di Matematica e Fisica “E. De Giorgi”; Università del Salento; Via per Arnesano 73100 Lecce Italy
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53
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Liu C, Hajagos TJ, Chen D, Chen Y, Kishpaugh D, Pei Q. Efficient One-Pot Synthesis of Colloidal Zirconium Oxide Nanoparticles for High-Refractive-Index Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2016; 8:4795-802. [PMID: 26824518 DOI: 10.1021/acsami.6b00743] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Zirconium oxide nanoparticles are promising candidates for optical engineering, photocatalysis, and high-κ dielectrics. However, reported synthetic methods for the colloidal zirconium oxide nanoparticles use unstable alkoxide precursors and have various other drawbacks, limiting their wide application. Here, we report a facile one-pot method for the synthesis of colloidally stable zirconium oxide nanoparticles. Using a simple solution of zirconium trifluoroacetate in oleylamine, highly stable zirconium oxide nanoparticles have been synthesized with high yield, following a proposed amidization-assisted sol-gel mechanism. The nanoparticles can be readily dispersed in nonpolar solvents, forming a long-term stable transparent solution, which can be further used to fabricate high-refractive-index nanocomposites in both monolith and thin-film forms. In addition, the same method has also been extended to the synthesis of titanium oxide nanoparticles, demonstrating its general applicability to all group IVB metal oxide nanoparticles.
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Affiliation(s)
- Chao Liu
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California , Los Angeles, California 90095, United States
| | - Tibor Jacob Hajagos
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California , Los Angeles, California 90095, United States
| | - Dustin Chen
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California , Los Angeles, California 90095, United States
| | - Yi Chen
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California , Los Angeles, California 90095, United States
- School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, China
| | - David Kishpaugh
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California , Los Angeles, California 90095, United States
| | - Qibing Pei
- Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California , Los Angeles, California 90095, United States
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54
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Ferrier RC, Koski J, Riggleman RA, Composto RJ. Engineering the Assembly of Gold Nanorods in Polymer Matrices. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02317] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Robert C. Ferrier
- Department
of Chemical and Biomolecular Engineering and ‡Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jason Koski
- Department
of Chemical and Biomolecular Engineering and ‡Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Robert A. Riggleman
- Department
of Chemical and Biomolecular Engineering and ‡Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Russell J. Composto
- Department
of Chemical and Biomolecular Engineering and ‡Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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55
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Qiao Y, Yin X, Wang L, Islam MS, Benicewicz BC, Ploehn HJ, Tang C. Bimodal Polymer Brush Core–Shell Barium Titanate Nanoparticles: A Strategy for High-Permittivity Polymer Nanocomposites. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b02018] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Yali Qiao
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Xiaodong Yin
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Lei Wang
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Md. Sayful Islam
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Brian C. Benicewicz
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Harry J. Ploehn
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Chuanbing Tang
- Department of Chemistry and Biochemistry and ‡Department of
Chemical Engineering, University of South Carolina, Columbia, South Carolina 29208, United States
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56
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Cobo Sánchez C, Wåhlander M, Taylor N, Fogelström L, Malmström E. Novel Nanocomposites of Poly(lauryl methacrylate)-Grafted Al2O3 Nanoparticles in LDPE. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25669-78. [PMID: 26468765 DOI: 10.1021/acsami.5b06427] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Aluminum oxide nanoparticles (NPs) were surface-modified by poly(lauryl methacrylate) (PLMA) using surface-initiated atom-transfer radical polymerization (SI-ATRP) of lauryl methacrylate. Nanocomposites were obtained by mixing the grafted NPs in a low-density polyethylene (LDPE) matrix in different ratios. First, the NPs were silanized with different aminosilanes, (3-aminopropyl)triethoxysilane, and 3-aminopropyl(diethoxy)methylsilane (APDMS). Subsequently, α-BiB, an initiator for SI-ATRP, was attached to the amino groups, showing higher immobilization ratios for APDMS and confirming that fewer self-condensation reactions between silanes took place. In a third step SI-ATRP of LMA at different times was performed to render PLMA-grafted NPs (NP-PLMAs), showing good control of the polymerization. Reactions were conducted for 20 to 60 min, obtaining a range of molecular weights between 23 000 and 83 000 g/mol, as confirmed by size-exclusion chromoatography of the cleaved grafts. Nanocomposites of NP-PLMAs at low loadings in LDPE were prepared by extrusion. At low loadings, 0.5 wt % of inorganic content, the second yield point, storage, and loss moduli increased significantly, suggesting an improved interphase as an effect of the PLMA grafts. These observations were also confirmed by an increase in transparency of the nanocomposite films. At higher loadings, 1 wt % of inorganics, the increasing amount of PLMA gave rise to the formation of small aggregates, which may explain the loss of mechanical properties. Finally, dielectric measurements were performed, showing a decrease in tan δ values for LDPE-NP-PLMAs, as compared to the nanocomposites containing unmodified NP, thus indicating an improved interphase between the NPs and LDPE.
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Affiliation(s)
- Carmen Cobo Sánchez
- School of Chemical Science and Engineering, Department of Fibre and Polymer Technology and ‡School of Electrical Engineering, Department of Electromagnetic Engineering, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Martin Wåhlander
- School of Chemical Science and Engineering, Department of Fibre and Polymer Technology and ‡School of Electrical Engineering, Department of Electromagnetic Engineering, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Nathaniel Taylor
- School of Chemical Science and Engineering, Department of Fibre and Polymer Technology and ‡School of Electrical Engineering, Department of Electromagnetic Engineering, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Linda Fogelström
- School of Chemical Science and Engineering, Department of Fibre and Polymer Technology and ‡School of Electrical Engineering, Department of Electromagnetic Engineering, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - Eva Malmström
- School of Chemical Science and Engineering, Department of Fibre and Polymer Technology and ‡School of Electrical Engineering, Department of Electromagnetic Engineering, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
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57
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Affiliation(s)
- Daniel F. Sunday
- Department
of Chemical Engineering, University of Virginia, 102 Engineers Way, Charlottesville, Virginia 22904, United States
| | - David L. Green
- Department
of Chemical Engineering, University of Virginia, 102 Engineers Way, Charlottesville, Virginia 22904, United States
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58
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Yan J, Kristufek T, Schmitt M, Wang Z, Xie G, Dang A, Hui CM, Pietrasik J, Bockstaller MR, Matyjaszewski K. Matrix-free Particle Brush System with Bimodal Molecular Weight Distribution Prepared by SI-ATRP. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01905] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Tyler Kristufek
- Department
of Chemical Engineering, University of Pittsburgh, Benedum Hall, 3700 O’Hara
Street, Pittsburgh, Pennsylvania 15261, United States
| | | | | | | | - Alei Dang
- School
of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, People’s Republic of China
| | | | - Joanna Pietrasik
- Institute
of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego
12/16, 90-924 Lodz, Poland
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59
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Chen X, Pang J, Zhou G, Sun B. Synthesis and characterization of SiO2–PMMA–POEOMA structures and SiO2–TiO2 pomegranate-like hybrid microspheres for the photodecomposition of methyl orange. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.04.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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60
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Hauser AW, Hayward RC. Random photografting of polymers to nanoparticles for well-dispersed nanocomposites. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23803] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Adam W. Hauser
- Department of Polymer Science and Engineering; University of Massachusetts Amherst; Amherst Massachusetts 01003
| | - Ryan C. Hayward
- Department of Polymer Science and Engineering; University of Massachusetts Amherst; Amherst Massachusetts 01003
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61
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Tang S, Fox TL, Lo TY, Horton JM, Ho RM, Zhao B, Stewart PL, Zhu L. Environmentally responsive self-assembly of mixed poly(tert-butyl acrylate)-polystyrene brush-grafted silica nanoparticles in selective polymer matrices. SOFT MATTER 2015; 11:5501-5512. [PMID: 26061172 DOI: 10.1039/c5sm00193e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Environmentally responsive self-assembly of nearly symmetric mixed poly(tert-butyl acrylate) (PtBA, 22.2 kDa)/polystyrene (PS, 23.4 kDa) brushes grafted onto 67 nm silica nanoparticles in selective homopolymer matrices [PtBA for the grafted PtBA chains and poly(cyclohexyl methacrylate) (PCHMA) for the grafted PS chains] was investigated using both conventional transmission electron microscopy (TEM) and electron tomography (i.e., 3D TEM). A variety of self-assembled phase morphologies were observed for the mixed brushes in selective polymer matrices with different molecular weights, and these can be explained by entropy-driven wet- and dry-brush theories. In a low molecular weight selective matrix, the wet-brush regime was formed with the miscible chains stretching out and the immiscible chains collapsing into isolated domains. In contrast, when the molecular weight of the selective matrix was higher than that of the compatible grafted polymer chains, the dry-brush regime was formed with the mixed brushes exhibiting the unperturbed morphology. In addition to the molecular weight, the size of nanoparticles (or the substrate curvature) was also observed to play an important role. For small particles (core size less than 50 nm), the wet brush-like morphology with a surface-tethered micellar structure was observed. Finally, the wet- and dry-brush regimes also significantly affected the dispersion of mixed brush particles in selective polymer matrices.
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Affiliation(s)
- Saide Tang
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, USA.
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62
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Burdyńska J, Daniel W, Li Y, Robertson B, Sheiko SS, Matyjaszewski K. Molecular Bottlebrushes with Bimodal Length Distribution of Side Chains. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00795] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Joanna Burdyńska
- Department
of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - William Daniel
- Department
of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Yuanchao Li
- Department
of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Brittany Robertson
- Department
of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Sergei S. Sheiko
- Department
of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Krzysztof Matyjaszewski
- Department
of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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63
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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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64
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Khabibullin A, Mastan E, Matyjaszewski K, Zhu S. Surface-Initiated Atom Transfer Radical Polymerization. CONTROLLED RADICAL POLYMERIZATION AT AND FROM SOLID SURFACES 2015. [DOI: 10.1007/12_2015_311] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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65
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Matyjaszewski K. Controlled Radical Polymerization: State-of-the-Art in 2014. ACS SYMPOSIUM SERIES 2015. [DOI: 10.1021/bk-2015-1187.ch001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Krzysztof Matyjaszewski
- Center for Macromolecular Engineering, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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66
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Dang A, Ojha S, Hui CM, Mahoney C, Matyjaszewski K, Bockstaller MR. High-transparency polymer nanocomposites enabled by polymer-graft modification of particle fillers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14434-42. [PMID: 25398014 DOI: 10.1021/la5037037] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The role of polymeric ligands on the optical transparency of polymer-matrix composites is analyzed by evaluating the effect of surface modification on the scattering cross-section of particle fillers in uniform particle dispersions. For the particular case of poly(styrene-r-acrylonitrile)-grafted silica particles embedded in poly(methyl methacrylate), it is shown that the tethering of polymeric chains with appropriate optical properties (such as to match the effective refractive index of the brush particle to the embedding matrix) facilitates the reduction of the particle scattering cross-section by several orders of magnitude as compared to pristine particle analogues. The conditions for minimizing the scattering cross-section of particle fillers by polymer-graft modification are established on the basis of effective medium as well as core-shell Mie theory and validated against experimental data on uniform liquid and solid particle dispersions. Effective medium theory is demonstrated to provide robust estimates of the "optimum polymer-graft composition" to minimize the scattering cross-section of particle fillers even in the limit of large particle dimensions (comparable to the wavelength of light). The application of polymer-graft modification to the design of large (500 nm diameter) silica particle composites with reduced scattering cross-section is demonstrated.
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Affiliation(s)
- Alei Dang
- Department of Materials Science and Engineering, Carnegie Mellon University , 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, United States
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67
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Viswanath A, Shen Y, Green AN, Tan R, Greytak AB, Benicewicz BC. Copolymerization and Synthesis of Multiply Binding Histamine Ligands for the Robust Functionalization of Quantum Dots. Macromolecules 2014. [DOI: 10.1021/ma501955t] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Anand Viswanath
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Yi Shen
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Alexandra N. Green
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Rui Tan
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Andrew B. Greytak
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Brian C. Benicewicz
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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68
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Nap RJ, Park SH, Szleifer I. On the stability of nanoparticles coated with polyelectrolytes in high salinity solutions. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/polb.23613] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rikkert J. Nap
- Department of Biomedical Engineering; Northwestern University; Evanston Illinois
- Department of Chemistry; Northwestern University; Evanston Illinois
- Chemistry of Life Processes Institute; Northwestern University; Evanston Illinois
| | - Sung Hyun Park
- Department of Biomedical Engineering; Northwestern University; Evanston Illinois
- Department of Chemistry; Northwestern University; Evanston Illinois
- Chemistry of Life Processes Institute; Northwestern University; Evanston Illinois
| | - Igal Szleifer
- Department of Biomedical Engineering; Northwestern University; Evanston Illinois
- Department of Chemistry; Northwestern University; Evanston Illinois
- Chemistry of Life Processes Institute; Northwestern University; Evanston Illinois
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69
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Rapid charging of thermal energy storage materials through plasmonic heating. Sci Rep 2014; 4:6246. [PMID: 25175717 PMCID: PMC4150109 DOI: 10.1038/srep06246] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 08/11/2014] [Indexed: 11/08/2022] Open
Abstract
Direct collection, conversion and storage of solar radiation as thermal energy are crucial to the efficient utilization of renewable solar energy and the reduction of global carbon footprint. This work reports a facile approach for rapid and efficient charging of thermal energy storage materials by the instant and intense photothermal effect of uniformly distributed plasmonic nanoparticles. Upon illumination with both green laser light and sunlight, the prepared plasmonic nanocomposites with volumetric ppm level of filler concentration demonstrated a faster heating rate, a higher heating temperature and a larger heating area than the conventional thermal diffusion based approach. With controlled dispersion, we further demonstrated that the light-to-heat conversion and thermal storage properties of the plasmonic nanocomposites can be fine-tuned by engineering the composition of the nanocomposites.
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70
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Wang Z, Liu Y, Tao P, Shen Q, Yi N, Zhang F, Liu Q, Song C, Zhang D, Shang W, Deng T. Bio-inspired evaporation through plasmonic film of nanoparticles at the air-water interface. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:3234-9. [PMID: 24821378 DOI: 10.1002/smll.201401071] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Indexed: 05/03/2023]
Abstract
Plasmonic gold nanoparticles self-assembled at the air-water interface to produce an evaporative surface with local control inspired by skins and plant leaves. Fast and efficient evaporation is realized due to the instant and localized plasmonic heating at the evaporative surface. The bio-inspired evaporation process provides an alternative promising approach for evaporation, and has potential applications in sterilization, distillation, and heat transfer.
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Affiliation(s)
- Zhenhui Wang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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71
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Jouault N, Lee D, Zhao D, Kumar SK. Block-copolymer-mediated nanoparticle dispersion and assembly in polymer nanocomposites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4031-4036. [PMID: 24711123 DOI: 10.1002/adma.201305641] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 02/21/2014] [Indexed: 06/03/2023]
Abstract
A individual nanoparticle (NP) dispersion in polymer nanocomposites has been obtained through the adsorption of PSbP2VP block copolymer (BCP) at the NPs' surface in solution. The adsorbed block increases the minimum inter-NP distance, while the non-adsorbed block has favourable entropy of mixing with the matrix polymer with the same chemical structure. Physical adsorption of BCP provides a simple, robust means of organizing NPs in a chemically unfavourable polymer.
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Affiliation(s)
- Nicolas Jouault
- Department of Chemical Engineering, Columbia University, 500 W. 120th St, New York, NY, 10027, USA
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72
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Horechyy A, Nandan B, Zafeiropoulos NE, Jehnichen D, Göbel M, Stamm M, Pospiech D. Nanoparticle directed domain orientation in thin films of asymmetric block copolymers. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3251-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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73
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Li Y, Krentz TM, Wang L, Benicewicz BC, Schadler LS. Ligand engineering of polymer nanocomposites: from the simple to the complex. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6005-6021. [PMID: 24476387 DOI: 10.1021/am405332a] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
One key to optimizing the performance of polymer nanocomposites for high-tech applications is surface ligand engineering of the nanofiller, which has been used to either tune the nanofiller morphology or introduce additional functionalities. Ligand engineering can be relatively simple such as a single population of short molecules on the nanoparticle surface designed for matrix compatibility. It can also have complexity that includes bimodal (or multimodal) populations of ligands that enable relatively independent control of enthalpic and entropic interactions between the nanofiller and matrix as well as introduce additional functionality and dynamic control. In this Spotlight on Applications, we provide a brief review into the use of brush ligands to tune the thermodynamic interactions between nanofiller and matrix and then focus on the potential for surface ligand engineering to create exciting nanocomposites properties for optoelectronic and dielectric applications.
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Affiliation(s)
- Ying Li
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute , Troy, New York 12180, United States
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74
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Estridge CE, Jayaraman A. Assembly of diblock copolymer functionalized spherical nanoparticles as a function of copolymer composition. J Chem Phys 2014; 140:144905. [DOI: 10.1063/1.4870592] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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75
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Francis R, Joy N, Aparna EP, Vijayan R. Polymer Grafted Inorganic Nanoparticles, Preparation, Properties, and Applications: A Review. POLYM REV 2014. [DOI: 10.1080/15583724.2013.870573] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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76
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Wåhlander M, Nilsson F, Larsson E, Tsai WC, Hillborg H, Carlmark A, Gedde UW, Malmström E. Polymer-grafted Al2O3-nanoparticles for controlled dispersion in poly(ethylene-co-butyl acrylate) nanocomposites. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.03.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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77
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Jiao Y, Akcora P. Accelerated brush growth on nanoparticle surfaces by reversible addition-fragmentation chain transfer polymerization. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27170] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yang Jiao
- Department of Chemical Engineering and Materials Science; Stevens Institute of Technology; Hoboken New Jersey 07030
| | - Pinar Akcora
- Department of Chemical Engineering and Materials Science; Stevens Institute of Technology; Hoboken New Jersey 07030
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78
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Choi J, Hore MJA, Clarke N, Winey KI, Composto RJ. Nanoparticle Brush Architecture Controls Polymer Diffusion in Nanocomposites. Macromolecules 2014. [DOI: 10.1021/ma500235v] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jihoon Choi
- Department
of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Michael J. A. Hore
- Center
for Neutron Research, National Institute of Standards and Technology (NIST), 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - Nigel Clarke
- Department
of Physics and Astronomy, University of Sheffield, S3 7RH, United Kingdom
| | - Karen I. Winey
- Department
of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Russell J. Composto
- Department
of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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79
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Encapsulation of inorganic nanoparticles into block copolymer micellar aggregates: Strategies and precise localization of nanoparticles. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.01.027] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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80
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Mao A, Karlicek RF. Surface patterning of nonscattering phosphors for light extraction. OPTICS LETTERS 2013; 38:2796-2799. [PMID: 23903145 DOI: 10.1364/ol.38.002796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A two-dimensional TiO₂ photonic crystal layer is fabricated on Y3Al5O12:Ce3+ (YAG:Ce) yellow ceramic plate phosphor (CPP) to enhance its forward emission. A triangle lattice pattern is defined by molecular transfer lithography with polyvinyl alcohol nanostructured templates. A 4.5 improvement in yellow emission is achieved from photonic-crystal-structure (PhC) patterned YAG:Ce CPP compared to a nonpatterned one. The PhC-patterned YAG:Ce CPP shows a collimated far-field intensity emission pattern compared to the random-patterned and nonpatterned one.
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Affiliation(s)
- An Mao
- Smart Lighting Engineering Research Center, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
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81
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Tao P, Li Y, Siegel RW, Schadler LS. Transparent dispensible high-refractive index ZrO2/epoxy nanocomposites for LED encapsulation. J Appl Polym Sci 2013. [DOI: 10.1002/app.39652] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Peng Tao
- Department of Materials Science and Engineering; Rensselaer Polytechnic Institute; Troy; New York; 12180
| | - Ying Li
- Department of Materials Science and Engineering; Rensselaer Polytechnic Institute; Troy; New York; 12180
| | - Richard W. Siegel
- Department of Materials Science and Engineering; Rensselaer Polytechnic Institute; Troy; New York; 12180
| | - Linda S. Schadler
- Department of Materials Science and Engineering; Rensselaer Polytechnic Institute; Troy; New York; 12180
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82
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Natarajan B, Neely T, Rungta A, Benicewicz BC, Schadler LS. Thermomechanical Properties of Bimodal Brush Modified Nanoparticle Composites. Macromolecules 2013. [DOI: 10.1021/ma400553c] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Bharath Natarajan
- Department of Materials Science
and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Tony Neely
- Department of Chemistry and
Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Atri Rungta
- Department of Chemistry and
Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Brian C. Benicewicz
- Department of Chemistry and
Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Linda S. Schadler
- Department of Materials Science
and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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83
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Kumar SK, Jouault N, Benicewicz B, Neely T. Nanocomposites with Polymer Grafted Nanoparticles. Macromolecules 2013. [DOI: 10.1021/ma4001385] [Citation(s) in RCA: 594] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sanat K. Kumar
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United
States
| | - Nicolas Jouault
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United
States
| | - Brian Benicewicz
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Tony Neely
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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84
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Tao P, Viswanath A, Li Y, Siegel RW, Benicewicz BC, Schadler LS. Bulk transparent epoxy nanocomposites filled with poly(glycidyl methacrylate) brush-grafted TiO2 nanoparticles. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.01.032] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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