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Huang Y, Elder DL, Kwiram AL, Jenekhe SA, Jen AKY, Dalton LR, Luscombe CK. Organic Semiconductors at the University of Washington: Advancements in Materials Design and Synthesis and toward Industrial Scale Production. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e1904239. [PMID: 31576634 DOI: 10.1002/adma.201904239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 09/07/2019] [Indexed: 06/10/2023]
Abstract
Research at the University of Washington regarding organic semiconductors is reviewed, covering four major topics: electro-optics, organic light emitting diodes, organic field-effect transistors, and organic solar cells. Underlying principles of materials design are demonstrated along with efforts toward unlocking the full potential of organic semiconductors. Finally, opinions on future research directions are presented, with a focus on commercial competency, environmental sustainability, and scalability of organic-semiconductor-based devices.
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Affiliation(s)
- Yunping Huang
- Materials Science and Engineering Department, University of Washington, Seattle, WA, 98195, USA
| | - Delwin L Elder
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Alvin L Kwiram
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Samson A Jenekhe
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Alex K Y Jen
- Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
| | - Larry R Dalton
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Christine K Luscombe
- Materials Science and Engineering Department, University of Washington, Seattle, WA, 98195, USA
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
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Jorgenson TD, Yucesoy DT, Sarikaya M, Overney RM. Thermal Selection of Aqueous Molecular Conformations for Tailored Energetics of Peptide Assemblies at Solid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:318-327. [PMID: 31829632 DOI: 10.1021/acs.langmuir.9b02425] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Key to the development of functional bioinorganic soft interfaces is the predictive control over the micron-scale assembly structure and energetics of biomolecules at solid interfaces. While assembly of labile biomolecules, such as short peptides, at interfaces is a great deal affected by the shape of the molecule, biomolecular conformations are prompted by external solution conditions, involving temperature, pH, and salt concentration. In this light, one can expect that the environmental conformational selection of aqueous biomolecules could potentially allow for fine-tuning of the equilibrium assembly structure at interfaces, as well as, the binding strength and molecular mobility within these assemblies. Here, we demonstrate the energetic and structural tailoring of two-dimensional surface assemblies of graphite-binding dodecapeptides, through the thermal selection of aqueous peptide conformations. Our findings based on a scanning probe energetic analysis, supplemented by molecular dynamics modeling, show that peptide-graphite and peptide-peptide intermolecular interactions strongly depend on the thermally selected molecular conformation and that the extent of the conformational change is directly related to the observed assembled structure. Enabled by these results was the design of a peptide with predictable binding and assembled structure, thus, suggesting environmental preconditioning of peptides as a means for controlling self-assembling active bioinorganic interfaces for bioelectronic implementations such as biomolecular fuel cells and biosensors.
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Affiliation(s)
- Tyler D Jorgenson
- Molecular Engineering and Sciences Institute , University of Washington , Box 351653, Seattle , Washington 98195-1653 , United States
- GEMSEC, Genetically Engineered Materials Science and Engineering Center , University of Washington , Seattle , Washington 98195 , United States
| | - Deniz T Yucesoy
- GEMSEC, Genetically Engineered Materials Science and Engineering Center , University of Washington , Seattle , Washington 98195 , United States
- Department of Material Science and Engineering , University of Washington , Roberts Hall , Box 352120, Seattle , Washington 98195-2120 , United States
| | - Mehmet Sarikaya
- Molecular Engineering and Sciences Institute , University of Washington , Box 351653, Seattle , Washington 98195-1653 , United States
- GEMSEC, Genetically Engineered Materials Science and Engineering Center , University of Washington , Seattle , Washington 98195 , United States
- Department of Material Science and Engineering , University of Washington , Roberts Hall , Box 352120, Seattle , Washington 98195-2120 , United States
- Department of Chemical Engineering , University of Washington , Benson Hall , Box 351750, Seattle , Washington 98195-1750 , United States
| | - René M Overney
- Molecular Engineering and Sciences Institute , University of Washington , Box 351653, Seattle , Washington 98195-1653 , United States
- Department of Chemical Engineering , University of Washington , Benson Hall , Box 351750, Seattle , Washington 98195-1750 , United States
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Heni W, Haffner C, Elder DL, Tillack AF, Fedoryshyn Y, Cottier R, Salamin Y, Hoessbacher C, Koch U, Cheng B, Robinson B, Dalton LR, Leuthold J. Nonlinearities of organic electro-optic materials in nanoscale slots and implications for the optimum modulator design. OPTICS EXPRESS 2017; 25:2627-2653. [PMID: 29519106 DOI: 10.1364/oe.25.002627] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The performance of highly nonlinear organic electro-optic (EO) materials incorporated into nanoscale slots is examined. It is shown that EO coefficients as large as 190 pm/V can be obtained in 150 nm wide plasmonic slot waveguides but that the coefficients decrease for narrower slots. Possible mechanism that lead to such a decrease are discussed. Monte-Carlo computer simulations are performed, confirming that chromophore-surface interactions are one important factor influencing the EO coefficient in narrow plasmonic slots. These highly nonlinear materials are of particular interest for applications in optical modulators. However, in modulators the key parameters are the voltage-length product UπL and the insertion loss rather than the linear EO coefficients. We show record-low voltage-length products of 70 Vµm and 50 Vµm for slot widths in the order of 50 nm for the materials JRD1 and DLD164, respectively. This is because the nonlinear interaction is enhanced in narrow slot and thereby compensates for the reduced EO coefficient. Likewise, it is found that lowest insertion losses are observed for slot widths in the range 60 to 100 nm.
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Affiliation(s)
- A. Subha Mahadevi
- Centre for Molecular Modelling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India 500607
| | - G. Narahari Sastry
- Centre for Molecular Modelling, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India 500607
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Krajina BA, Kocherlakota LS, Overney RM. Direct determination of the local Hamaker constant of inorganic surfaces based on scanning force microscopy. J Chem Phys 2014; 141:164707. [DOI: 10.1063/1.4898799] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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