Molecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles

Abstract Optically active silica nanoparticles are interesting owing to high stability and easy accessibility. Unlike previous reports on dye loaded silica particles, here we address an important question on how optical properties are dependent on the aggregation-induced segregation of perylene mole...

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Autores principales:	Deepa Sriramulu, Shuvan Prashant Turaga, Andrew Anthony Bettiol, Suresh Valiyaveettil
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3dc4fa922a914abaa7fd583b2414acf1
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spelling	oai:doaj.org-article:3dc4fa922a914abaa7fd583b2414acf12021-12-02T15:05:04ZMolecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles10.1038/s41598-017-07892-42045-2322https://doaj.org/article/3dc4fa922a914abaa7fd583b2414acf12017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07892-4https://doaj.org/toc/2045-2322Abstract Optically active silica nanoparticles are interesting owing to high stability and easy accessibility. Unlike previous reports on dye loaded silica particles, here we address an important question on how optical properties are dependent on the aggregation-induced segregation of perylene molecules inside and outside the silica nanoparticles. Three differentially functionalized fluorescent perylene - silica hybrid nanoparticles are prepared from appropriate ratios of perylene derivatives and tetraethyl orthosilicate (TEOS) and investigated the structure property correlation (P-ST, P-NP and P-SF). The particles differ from each other on the distribution, organization and intermolecular interaction of perylene inside or outside the silica matrix. Structure and morphology of all hybrid nanoparticles were characterized using a range of techniques such as electron microscope, optical spectroscopic measurements and thermal analysis. The organizations of perylene in three different silica nanoparticles were explored using steady-state fluorescence, fluorescence anisotropy, lifetime measurements and solid state polarized spectroscopic studies. The interactions and changes in optical properties of the silica nanoparticles in presence of different amines were tested and quantified both in solution and in vapor phase using fluorescence quenching studies. The synthesized materials can be regenerated after washing with water and reused for sensing of amines.Deepa SriramuluShuvan Prashant TuragaAndrew Anthony BettiolSuresh ValiyaveettilNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Deepa Sriramulu Shuvan Prashant Turaga Andrew Anthony Bettiol Suresh Valiyaveettil Molecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles
description	Abstract Optically active silica nanoparticles are interesting owing to high stability and easy accessibility. Unlike previous reports on dye loaded silica particles, here we address an important question on how optical properties are dependent on the aggregation-induced segregation of perylene molecules inside and outside the silica nanoparticles. Three differentially functionalized fluorescent perylene - silica hybrid nanoparticles are prepared from appropriate ratios of perylene derivatives and tetraethyl orthosilicate (TEOS) and investigated the structure property correlation (P-ST, P-NP and P-SF). The particles differ from each other on the distribution, organization and intermolecular interaction of perylene inside or outside the silica matrix. Structure and morphology of all hybrid nanoparticles were characterized using a range of techniques such as electron microscope, optical spectroscopic measurements and thermal analysis. The organizations of perylene in three different silica nanoparticles were explored using steady-state fluorescence, fluorescence anisotropy, lifetime measurements and solid state polarized spectroscopic studies. The interactions and changes in optical properties of the silica nanoparticles in presence of different amines were tested and quantified both in solution and in vapor phase using fluorescence quenching studies. The synthesized materials can be regenerated after washing with water and reused for sensing of amines.
format	article
author	Deepa Sriramulu Shuvan Prashant Turaga Andrew Anthony Bettiol Suresh Valiyaveettil
author_facet	Deepa Sriramulu Shuvan Prashant Turaga Andrew Anthony Bettiol Suresh Valiyaveettil
author_sort	Deepa Sriramulu
title	Molecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles
title_short	Molecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles
title_full	Molecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles
title_fullStr	Molecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles
title_full_unstemmed	Molecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles
title_sort	molecular organization induced anisotropic properties of perylene – silica hybrid nanoparticles
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/3dc4fa922a914abaa7fd583b2414acf1
work_keys_str_mv	AT deepasriramulu molecularorganizationinducedanisotropicpropertiesofperylenesilicahybridnanoparticles AT shuvanprashantturaga molecularorganizationinducedanisotropicpropertiesofperylenesilicahybridnanoparticles AT andrewanthonybettiol molecularorganizationinducedanisotropicpropertiesofperylenesilicahybridnanoparticles AT sureshvaliyaveettil molecularorganizationinducedanisotropicpropertiesofperylenesilicahybridnanoparticles
_version_	1718388948962639872

Molecular Organization Induced Anisotropic Properties of Perylene – Silica Hybrid Nanoparticles

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