טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
Ph.D Thesis
Ph.D StudentNakhmanovich Grigori
SubjectPerparation and Characterization of New Conjugated
Polymers
DepartmentDepartment of Chemistry
Supervisor Professor Yoav Eichen


Abstract

Conductive polymers are polymer systems characterized by the presence of alternating single and conjugated double bonds along their backbone. However, conjugation is not enough to make these polymers conductive. In addition - and this is what the dopant does - charge carriers in the form of extra electrons or ”holes” have to be injected into the material. Today, conductive polymers are being developed for many uses, such as in corrosion inhibitors, compact capacitors, antistatic coating, electromagnetic shielding of computers, and in “smart” windows that can vary the amount of light they allow to pass, etc. A second generation of electric polymers has also appeared in transistors, light-emitting diodes, lasers with further applications such as in flat television screens, solar cells, etc. Polymers have the potential advantages of low cost and that they can be processed, e.g., as film.

This work is dedicated to a preparation and electrooptical characterization of a new class of tuneable N-heterocycle conjugated polymers. The present research was focused on the investigation of the role of supramolecular (weak) interactions in the control of the physical and electrooptical properties of the polymers, such as dark and light conductivity, photo and electroluminescence, oxidative and reductive doping.