Photophysical Study of Linked 1,4,7-Triazacyclonane CR (III) Complexes

Author

Weizhen Tu, Western Michigan University

Date of Award

8-2000

Degree Name

Master of Arts

Department

Chemistry

First Advisor

Dr. Marc W. Perkovic

Second Advisor

Dr. John E. Chateauneuf

Third Advisor

Dr. John B. Miller

Fourth Advisor

Dr. Elke Schoffers

Access Setting

Masters Thesis-Open Access

Abstract

A series of mono and bimetallic Cr(III) complexes based on the 1,4,7- triazacyclonoane(TACN) were prepared. Complexes of the Cr(TACN)X₃ , and Cr₂(DTNE)X₆ demonstrated marked difference of photophysical properties on the nature of X. In cases where X is more easily oxidized, enhanced extinction coefficient in the ⁴A₂ ➔ ²T, absorption and larger quantum yield of emission at 77K were observed in the dimer complexes. Shorter lifetime and enhanced decay rate were also found in the dimer complexes suggests that there might exists weak coupling behavior between the two Cr(III) metal cents in the dimer complexes, and the extent of coupling can be manipulated by the nature of X.

Recommended Citation

Tu, Weizhen, "Photophysical Study of Linked 1,4,7-Triazacyclonane CR (III) Complexes" (2000). Masters Theses. 4343.
https://scholarworks.wmich.edu/masters_theses/4343