Enhanced piezoresponse and nonlinear optical properties of fluorinated self-assembled peptide nanotubes
Self-assembled L,L-diphenylalanine (FF) nanostructures offer an attractive platform for photonics and nonlinear optics. The nonlinear optical (NLO) coefficients of FF nanotubes depend on the diameter of the tube [S. Khanra et al. Phys. Chem. Chem. Phys. 19(4), 3084–3093 (2017)]. To further enhance t...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2019-11-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5110562 |
| _version_ | 1818278326922379264 |
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| author | Soma Khanra Sandra V. Vassiliades Wendel A. Alves Kaidi Yang Rainer Glaser Kartik Ghosh Payal Bhattacharya Ping Yu Suchismita Guha |
| author_facet | Soma Khanra Sandra V. Vassiliades Wendel A. Alves Kaidi Yang Rainer Glaser Kartik Ghosh Payal Bhattacharya Ping Yu Suchismita Guha |
| author_sort | Soma Khanra |
| collection | DOAJ |
| description | Self-assembled L,L-diphenylalanine (FF) nanostructures offer an attractive platform for photonics and nonlinear optics. The nonlinear optical (NLO) coefficients of FF nanotubes depend on the diameter of the tube [S. Khanra et al. Phys. Chem. Chem. Phys. 19(4), 3084–3093 (2017)]. To further enhance the NLO properties of FF, we search for structural modifications. Here, we report on the synthesis of fluorinated FF dipeptides by replacing one ortho-hydrogen atom in each of the phenyl groups of FF by a fluorine atom. Density-functional theoretical calculations yield insights into minimum energy conformers of fluorinated FF (Fl-FF). Fl-FF self-assembles akin to FF into micron-length tubes. The effects of fluorination are evaluated on the piezoelectric response and nonlinear optical properties. The piezoelectric d15 coefficient of Fl-FF is found to be more than 10 times higher than that of FF nanotubes, and the intensity of second harmonic generation (SHG) polarimetry from individual Fl-FF nanotubes is more than 20 times that of individual FF nanotubes. Furthermore, we obtain SHG images to compare the intensities of FF and Fl-FF tubes. This work demonstrates the potential of fluorine substitution in other self-assembled biomimetic peptides for enhancing nonlinear optical response and piezoelectricity. |
| first_indexed | 2024-12-12T23:15:40Z |
| format | Article |
| id | doaj.art-206601dec1ce48f3bb30f00370096404 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-12T23:15:40Z |
| publishDate | 2019-11-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-206601dec1ce48f3bb30f003700964042022-12-22T00:08:27ZengAIP Publishing LLCAIP Advances2158-32262019-11-01911115202115202-610.1063/1.5110562Enhanced piezoresponse and nonlinear optical properties of fluorinated self-assembled peptide nanotubesSoma Khanra0Sandra V. Vassiliades1Wendel A. Alves2Kaidi Yang3Rainer Glaser4Kartik Ghosh5Payal Bhattacharya6Ping Yu7Suchismita Guha8Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USACentro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09219-580 Santo André, São Paulo, BrazilCentro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09219-580 Santo André, São Paulo, BrazilDepartment of Chemistry, University of Missouri, Columbia, Missouri 65211, USADepartment of Chemistry, University of Missouri, Columbia, Missouri 65211, USAPhysics, Astronomy, and Materials Science, Missouri State University, Springfield, Missouri 65897, USADepartment of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USADepartment of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USADepartment of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USASelf-assembled L,L-diphenylalanine (FF) nanostructures offer an attractive platform for photonics and nonlinear optics. The nonlinear optical (NLO) coefficients of FF nanotubes depend on the diameter of the tube [S. Khanra et al. Phys. Chem. Chem. Phys. 19(4), 3084–3093 (2017)]. To further enhance the NLO properties of FF, we search for structural modifications. Here, we report on the synthesis of fluorinated FF dipeptides by replacing one ortho-hydrogen atom in each of the phenyl groups of FF by a fluorine atom. Density-functional theoretical calculations yield insights into minimum energy conformers of fluorinated FF (Fl-FF). Fl-FF self-assembles akin to FF into micron-length tubes. The effects of fluorination are evaluated on the piezoelectric response and nonlinear optical properties. The piezoelectric d15 coefficient of Fl-FF is found to be more than 10 times higher than that of FF nanotubes, and the intensity of second harmonic generation (SHG) polarimetry from individual Fl-FF nanotubes is more than 20 times that of individual FF nanotubes. Furthermore, we obtain SHG images to compare the intensities of FF and Fl-FF tubes. This work demonstrates the potential of fluorine substitution in other self-assembled biomimetic peptides for enhancing nonlinear optical response and piezoelectricity.http://dx.doi.org/10.1063/1.5110562 |
| spellingShingle | Soma Khanra Sandra V. Vassiliades Wendel A. Alves Kaidi Yang Rainer Glaser Kartik Ghosh Payal Bhattacharya Ping Yu Suchismita Guha Enhanced piezoresponse and nonlinear optical properties of fluorinated self-assembled peptide nanotubes AIP Advances |
| title | Enhanced piezoresponse and nonlinear optical properties of fluorinated self-assembled peptide nanotubes |
| title_full | Enhanced piezoresponse and nonlinear optical properties of fluorinated self-assembled peptide nanotubes |
| title_fullStr | Enhanced piezoresponse and nonlinear optical properties of fluorinated self-assembled peptide nanotubes |
| title_full_unstemmed | Enhanced piezoresponse and nonlinear optical properties of fluorinated self-assembled peptide nanotubes |
| title_short | Enhanced piezoresponse and nonlinear optical properties of fluorinated self-assembled peptide nanotubes |
| title_sort | enhanced piezoresponse and nonlinear optical properties of fluorinated self assembled peptide nanotubes |
| url | http://dx.doi.org/10.1063/1.5110562 |
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