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The Influence of Polymethyl Methacry...

Chapman, Navid.

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The Influence of Polymethyl Methacrylate Interfaces on the Fluorescence of Rhodamine 6G Thin Films.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Influence of Polymethyl Methacrylate Interfaces on the Fluorescence of Rhodamine 6G Thin Films./
Author:	Chapman, Navid.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	118 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
Contained By:	Dissertations Abstracts International82-06B.
Subject:	Polymer chemistry. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28151426
ISBN:	9798698595526

The Influence of Polymethyl Methacrylate Interfaces on the Fluorescence of Rhodamine 6G Thin Films.
Chapman, Navid.

The Influence of Polymethyl Methacrylate Interfaces on the Fluorescence of Rhodamine 6G Thin Films. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 118 p.

Source: Dissertations Abstracts International, Volume: 82-06, Section: B.

Thesis (Ph.D.)--University of Rhode Island, 2020.

This item must not be sold to any third party vendors.

A three-layer fluorescence sensing platform is described. The sensor consists of an ultra-thin fluorophore layer of Rhodamine 6G (Rh6G) on top of a sub-micron polymer film of polymethyl methacrylate (PMMA) on top of a rigid glass support. Both fluorophore and polymer layers are prepared by spin-coating, a common industrial process for repeatable deposition of thin films of uniform thickness. First, we study the preparation of PMMA films. Using an accepted equation of state, we closely examine spin-coating dynamics and show that casting solution concentration and spin speed process parameters can be used to modulate the final thickness and surface morphology of dry PMMA films. Then, we apply the fluorophore layer. Using absorbance, excitation, and emission spectroscopy, we study the photophysics of Rh6G and demonstrate that interfacial roughness can help enhance fluorescence by disrupting the formation of weakly emissive dimer and aggregate absorbing species. Additionally, light trapping within the dielectric polymer layer can enhance fluorescence by promoting photon reabsorption at the polymer-fluorophore interface.

ISBN: 9798698595526Subjects--Topical Terms:

3173488
Polymer chemistry.
Subjects--Index Terms:

Fluorescence

The Influence of Polymethyl Methacrylate Interfaces on the Fluorescence of Rhodamine 6G Thin Films.
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245 1 4 $a The Influence of Polymethyl Methacrylate Interfaces on the Fluorescence of Rhodamine 6G Thin Films.
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300 $a 118 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-06, Section: B.
500 $a Advisor: Euler, William B.
502 $a Thesis (Ph.D.)--University of Rhode Island, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a A three-layer fluorescence sensing platform is described. The sensor consists of an ultra-thin fluorophore layer of Rhodamine 6G (Rh6G) on top of a sub-micron polymer film of polymethyl methacrylate (PMMA) on top of a rigid glass support. Both fluorophore and polymer layers are prepared by spin-coating, a common industrial process for repeatable deposition of thin films of uniform thickness. First, we study the preparation of PMMA films. Using an accepted equation of state, we closely examine spin-coating dynamics and show that casting solution concentration and spin speed process parameters can be used to modulate the final thickness and surface morphology of dry PMMA films. Then, we apply the fluorophore layer. Using absorbance, excitation, and emission spectroscopy, we study the photophysics of Rh6G and demonstrate that interfacial roughness can help enhance fluorescence by disrupting the formation of weakly emissive dimer and aggregate absorbing species. Additionally, light trapping within the dielectric polymer layer can enhance fluorescence by promoting photon reabsorption at the polymer-fluorophore interface.
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650 4 $a Polymer chemistry. $3 3173488
650 4 $a Optics. $3 517925
650 4 $a Fluid mechanics. $3 528155
650 4 $a Materials science. $3 543314
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653 $a Fluorescence
653 $a Polymethyl methacrylate
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653 $a Sensor
653 $a Spin-coating
653 $a Transport phenomena
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