Weizhen Tu

Date of Award


Degree Name

Master of Arts



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


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 4A22T, 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.

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