Date of Award

12-2007

Degree Name

Doctor of Philosophy

Department

Chemistry

First Advisor

Dr. Ekkehard Sinn

Second Advisor

Dr. Subra Muralidharan

Third Advisor

Dr. Sherine Obare

Fourth Advisor

Dr. Yirong Mo

Abstract

A novel series of stilbenoids and their aza analogs were synthesized, characterized and used as photoluminescent components in the detection of nerve agents. Their structure-property relationship was elucidated through UV-visible and fluorescence spectroscopy. The research in this thesis is driven by the hypothesis that the two-block sensor system consisting of a receptor incorporated ruthenium complex and a fluorescent signal molecule of stilbenoids, is capable of detecting chemical warfare agents. The sensor anchored onto nanoparticles and subsequently the nanoparticles were arranged through mediated self-assembly. While photo-induced electron transfer is a well-known mechanism for sensor design, the described system showed that photo-induced electron transfer between the ruthenium complex and the anionic bonded stilbenoid was not promising for molecular sensor construction. On the other hand, the analogs of stilbene compounds aza stilbenes are excellent receptor-signal integrated sensor materials. The described work will show that silica nanoparticle-promoted self-assembly of organic monolayer provides a method to study the photo physical properties of the organized structures.

Comments

5th Advisor: Dr. Nora Berrah

Access Setting

Dissertation-Open Access

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