Intense optical second harmonic generation from centrosymmetric nanocrystalline para-nitroaniline
<p>We demonstrate an approach that uses normally centrosymmetric, but highly polarizable organic molecules of para-nitroaniline (<em>p</em>-NA) as very efficient second harmonic generator (SHG) for near infra-red light. The approach is based on an effective manipulation of the nano...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
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AIP Publishing LLC
2014
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| _version_ | 1797092616337096704 |
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| author | Isakov, D Belsley, M de Matos Gomes, E Gonçalves, H Schellenberg, P Almeida, B |
| author_facet | Isakov, D Belsley, M de Matos Gomes, E Gonçalves, H Schellenberg, P Almeida, B |
| author_sort | Isakov, D |
| collection | OXFORD |
| description | <p>We demonstrate an approach that uses normally centrosymmetric, but highly polarizable organic molecules of para-nitroaniline (<em>p</em>-NA) as very efficient second harmonic generator (SHG) for near infra-red light. The approach is based on an effective manipulation of the nanocrystalline size and their assembly into a highly orientated mesocrystalline structures. The resulting mesocrystalline form of <em>p</em>-NA consists of multiple nanocrystals with common orientation, providing a set of surfaces with highly aligned molecules forming a head-to-tail polar arrangement. The second harmonic generation efficiency from this arrangement of mesocrystalline nanostructures is comparable to that from the conventional non-centrosymmetric organic crystals. The experimental results indicate that a very strong second-order nonlinear response can be obtained from small D-π-A organic molecules with elevated molecular hyperpolarizabilities even if these molecules tend to crystallize in centrosymmetric structures.</p> |
| first_indexed | 2024-03-07T03:48:32Z |
| format | Journal article |
| id | oxford-uuid:c0648a34-75f6-4132-8e0b-d32a339c5dbc |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:48:32Z |
| publishDate | 2014 |
| publisher | AIP Publishing LLC |
| record_format | dspace |
| spelling | oxford-uuid:c0648a34-75f6-4132-8e0b-d32a339c5dbc2022-03-27T05:54:04ZIntense optical second harmonic generation from centrosymmetric nanocrystalline para-nitroanilineJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c0648a34-75f6-4132-8e0b-d32a339c5dbcNanostructuresCondensed Matter PhysicsEnglishOxford University Research Archive - ValetAIP Publishing LLC2014Isakov, DBelsley, Mde Matos Gomes, EGonçalves, HSchellenberg, PAlmeida, B<p>We demonstrate an approach that uses normally centrosymmetric, but highly polarizable organic molecules of para-nitroaniline (<em>p</em>-NA) as very efficient second harmonic generator (SHG) for near infra-red light. The approach is based on an effective manipulation of the nanocrystalline size and their assembly into a highly orientated mesocrystalline structures. The resulting mesocrystalline form of <em>p</em>-NA consists of multiple nanocrystals with common orientation, providing a set of surfaces with highly aligned molecules forming a head-to-tail polar arrangement. The second harmonic generation efficiency from this arrangement of mesocrystalline nanostructures is comparable to that from the conventional non-centrosymmetric organic crystals. The experimental results indicate that a very strong second-order nonlinear response can be obtained from small D-π-A organic molecules with elevated molecular hyperpolarizabilities even if these molecules tend to crystallize in centrosymmetric structures.</p> |
| spellingShingle | Nanostructures Condensed Matter Physics Isakov, D Belsley, M de Matos Gomes, E Gonçalves, H Schellenberg, P Almeida, B Intense optical second harmonic generation from centrosymmetric nanocrystalline para-nitroaniline |
| title | Intense optical second harmonic generation from centrosymmetric nanocrystalline para-nitroaniline |
| title_full | Intense optical second harmonic generation from centrosymmetric nanocrystalline para-nitroaniline |
| title_fullStr | Intense optical second harmonic generation from centrosymmetric nanocrystalline para-nitroaniline |
| title_full_unstemmed | Intense optical second harmonic generation from centrosymmetric nanocrystalline para-nitroaniline |
| title_short | Intense optical second harmonic generation from centrosymmetric nanocrystalline para-nitroaniline |
| title_sort | intense optical second harmonic generation from centrosymmetric nanocrystalline para nitroaniline |
| topic | Nanostructures Condensed Matter Physics |
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