Date of Award

8-2011

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Legacy Department

Chemistry

Advisor

Smith, Rhett C

Committee Member

Bhattacharyya , Gautam

Committee Member

McNeill , Jason

Committee Member

Tennyson , Andrew G

Abstract

Ever since the discovery of conducting polymers (CPs)in the late 1970s, organic conjugated materials and polymers is one of the most popular and fascinating research area among the scientists due to the remarkably unique properties and broad range of applications of (CPs), notably organic photovoltaic (OPVs), organic or polymer based light emitting devices (OLEDs / PLEDs), field effect transistors (FETs), nonlinear optical (NLO) devices and sensor for biologically relevant analytes, metal ions and anions. Optical properties of these materials depend on intra / interchromophoric interaction, geometry and relative orientation in space. Detailed study of such materials can also help us to understand various intriguing properties of conducting polymers such as charge carrier mobility, quantum yield, and how the excited states transfer energy.
The primary focus of my research is to develop novel materials which can be employed as sensors for biological relevant molecules and ions and the synthesis of novel scaffolded chromophores to investigate the interchromophoric interactions and to tune their photophysical properties.
The basic introduction of conducting polymers and its applications are described in chapter one followed by the detailed study of m-xylene and m-terphenyl based phosphate and pyrophosphate anions sensors in chapter two and three. Also polymer supported m-xylene based materials were studied for catalytic decomposition of phosphoesters in chapter two.
Synthesis and photophysical characterization of π-conjugated cruciforms is reported in chapters four and five. Chapter four accounts for the synthesis of 1,3-bis(dimethylaminomethyl)phenyl based cruciform receptors as metal ion sensor whereas chapter five describes the synthesis and photophysical characterization of five phosphorous-containing cruciform derivatives.
Synthesis of novel m-terphenyl based halogenated oxacyclophane scaffolds for covalent attachment of chromophores using C-C coupling reaction is reported in chapter six to study the controlled interchain interaction for both monomer and polymers.

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