Abstract
ABSTRACTIn order to obtain desired switching and memory properties by carrying out chemical modifications on CuTCNQ-type charge-transfer complexes, systematic explorations on various donor and acceptor reactivities are necessary. Thus, the reactivities of thirty-three different metals with TCNQ and four organo-acceptors with Cu in an CH3CN solution were qualitatively studied, as well as the solvent effects on the complex film formation. Uniform coverage of Metallo-organic complex films were obtained (in the order of reactivities) on TCNQ complexes of Tl, Ca, Mg, Cu, Ag, Mn and Cd, as well as on Cu complexes of TCNQ(OET)2, BTCNQ and TCNQ(i-Pr)2. The donor reactivity is affected by its surface immunity (behavior) towards the acceptor attack and the solubility of the formed charge-transfer complex in the chosen solvent. The acceptor reactivity is affected mainly by a steric effect, followed by an inductive effect of the substituents. The complex film morphology and quality could be optimized by matching the relative reactivity of donor vs. acceptor and by choosing the appropriate solvent with proper solubility of the formed complex.
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