Everything You Always Wanted to Know about Fluorescent Multilayers but Were Afraid to Ask Photoluminescence Studies of Poly (2,5-Methoxy-Propyloxysulfonate Phenylene Vinylene) Multilayers: Engineering Stable, Efficient Films

Date of Award

2003

Document Type

Thesis

Degree Name

Bachelors

Department

Natural Sciences

First Advisor

Johal, Malkait

Keywords

Fluorescent, Multilayers, Polyelectrolyte

Area of Concentration

Chemistry

Abstract

We report the self and spin-assembly of poly(2,5-methoxy-propyloxy sulfonate phenylene vinylene) (MPS-PPV) multilayer polyetectrolyte systems using poly(ethylenimine) and three poly(propylenimine) starburst dendrimers as polycations. These films are not stable over time if the assembly process terminates with MPS-PPV layer deposition. However, we were able to achieve temporal stability by terminating the assembly process after a spin-assembled dendriiner layer. We also show that the spin- assembly process provides a means of controlling the optical and photolurninescence properties of the multilayer systems. We have assembled films with a variety of photoluminescence properties. Emission maxima can be tuned from 550 to 590 nin by changing the concentration and number of bilayers. Furthermore, we have investigated the effect of a dendrimer layer of various generations and concentrations when assembled onto a single bilayer of generation 3 dendrimer and MPS-PPV. By controlling the concentration and generation we are able to produce films of a desired thickness and photoluminescence quantum efficiency. Bulk phase solution studies have been conducted to supplement this work and suggest strong interactions between the dendrimers of all generations and WS-PPV. The nature of this interaction is not yet understood.

Rights

This bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.

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