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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Akira Shinohara, Guang Shao, Takashi Nakanishi, Hideyuki Shinmori
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	porphyrin gold nanoparticle photoabsorption fluorescence adsorbate Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/a15b6dd0d46b42549cbc8810720f7faa
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a15b6dd0d46b42549cbc8810720f7faa
record_format	dspace
spelling	oai:doaj.org-article:a15b6dd0d46b42549cbc8810720f7faa2021-11-30T14:05:07ZPorphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles2296-264610.3389/fchem.2021.777041https://doaj.org/article/a15b6dd0d46b42549cbc8810720f7faa2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fchem.2021.777041/fullhttps://doaj.org/toc/2296-2646Here, 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.Akira ShinoharaAkira ShinoharaAkira ShinoharaGuang ShaoTakashi NakanishiHideyuki ShinmoriFrontiers Media S.A.articleporphyringold nanoparticlephotoabsorptionfluorescenceadsorbateChemistryQD1-999ENFrontiers in Chemistry, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	porphyrin gold nanoparticle photoabsorption fluorescence adsorbate Chemistry QD1-999
spellingShingle	porphyrin gold nanoparticle photoabsorption fluorescence adsorbate Chemistry QD1-999 Akira Shinohara Akira Shinohara Akira Shinohara Guang Shao Takashi Nakanishi Hideyuki Shinmori Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles
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.
format	article
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
title	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_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_sort	porphyrin photoabsorption and fluorescence variation with adsorptive loading on gold nanoparticles
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/a15b6dd0d46b42549cbc8810720f7faa
work_keys_str_mv	AT akirashinohara porphyrinphotoabsorptionandfluorescencevariationwithadsorptiveloadingongoldnanoparticles AT akirashinohara porphyrinphotoabsorptionandfluorescencevariationwithadsorptiveloadingongoldnanoparticles AT akirashinohara porphyrinphotoabsorptionandfluorescencevariationwithadsorptiveloadingongoldnanoparticles AT guangshao porphyrinphotoabsorptionandfluorescencevariationwithadsorptiveloadingongoldnanoparticles AT takashinakanishi porphyrinphotoabsorptionandfluorescencevariationwithadsorptiveloadingongoldnanoparticles AT hideyukishinmori porphyrinphotoabsorptionandfluorescencevariationwithadsorptiveloadingongoldnanoparticles
_version_	1718406521562333184

Porphyrin Photoabsorption and Fluorescence Variation with Adsorptive Loading on Gold Nanoparticles

Ejemplares similares