Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles
Here, we report the photophysical structure–property relationship of porphyrins adsorbed on gold nanoparticles. The number of porphyrin–alkanethiolate adsorbates per particle was adjusted by a post-synthetic thiol/thiolate exchange reaction on 1-dodecanethiolate–protected gold nanoparticles. Even wi...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-11-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2021.777041/full |
| _version_ | 1818723114369941504 |
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| author | Akira Shinohara Akira Shinohara Akira Shinohara Guang Shao Takashi Nakanishi Hideyuki Shinmori |
| author_facet | Akira Shinohara Akira Shinohara Akira Shinohara Guang Shao Takashi Nakanishi Hideyuki Shinmori |
| author_sort | Akira Shinohara |
| collection | DOAJ |
| description | Here, we report the photophysical structure–property relationship of porphyrins adsorbed on gold nanoparticles. The number of porphyrin–alkanethiolate adsorbates per particle was adjusted by a post-synthetic thiol/thiolate exchange reaction on 1-dodecanethiolate–protected gold nanoparticles. Even with a low loading level of adsorbates (<10% of all thiolate sites on gold nanoparticles), the shoulder absorption at the Soret band was intensified, indicating the formation of aggregates of porphyrin adsorbates on the nanoparticles. Steady-state fluorescence quantum yields could be adjusted by the bulkiness of substituents at the meso-positions of the porphyrin or the methylene linker chain length, regardless of the porphyrin loading level and the nanoparticle diameter. |
| first_indexed | 2024-12-17T21:05:22Z |
| format | Article |
| id | doaj.art-a15b6dd0d46b42549cbc8810720f7faa |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-17T21:05:22Z |
| publishDate | 2021-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-a15b6dd0d46b42549cbc8810720f7faa2022-12-21T21:32:35ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462021-11-01910.3389/fchem.2021.777041777041Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold NanoparticlesAkira Shinohara0Akira Shinohara1Akira Shinohara2Guang Shao3Takashi Nakanishi4Hideyuki Shinmori5School of Chemistry, Sun Yat-sen University, Guangzhou, ChinaFaculty of Life and Environmental Science, Graduate Faculty of Interdisciplinary Research, Department of Biotechnology, University of Yamanashi, Kofu, JapanInternational Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, JapanSchool of Chemistry, Sun Yat-sen University, Guangzhou, ChinaInternational Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, JapanFaculty of Life and Environmental Science, Graduate Faculty of Interdisciplinary Research, Department of Biotechnology, University of Yamanashi, Kofu, JapanHere, we report the photophysical structure–property relationship of porphyrins adsorbed on gold nanoparticles. The number of porphyrin–alkanethiolate adsorbates per particle was adjusted by a post-synthetic thiol/thiolate exchange reaction on 1-dodecanethiolate–protected gold nanoparticles. Even with a low loading level of adsorbates (<10% of all thiolate sites on gold nanoparticles), the shoulder absorption at the Soret band was intensified, indicating the formation of aggregates of porphyrin adsorbates on the nanoparticles. Steady-state fluorescence quantum yields could be adjusted by the bulkiness of substituents at the meso-positions of the porphyrin or the methylene linker chain length, regardless of the porphyrin loading level and the nanoparticle diameter.https://www.frontiersin.org/articles/10.3389/fchem.2021.777041/fullporphyringold nanoparticlephotoabsorptionfluorescenceadsorbate |
| spellingShingle | Akira Shinohara Akira Shinohara Akira Shinohara Guang Shao Takashi Nakanishi Hideyuki Shinmori Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles Frontiers in Chemistry porphyrin gold nanoparticle photoabsorption fluorescence adsorbate |
| title | Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles |
| title_full | Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles |
| title_fullStr | Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles |
| title_full_unstemmed | Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles |
| title_short | Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles |
| title_sort | porphyrin photoabsorption and fluorescence variation with adsorptive loading on gold nanoparticles |
| topic | porphyrin gold nanoparticle photoabsorption fluorescence adsorbate |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2021.777041/full |
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