Related Experiment Video
Updated: Feb 3, 2026
Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Elevation from Binary to Ternary Resistive Switching Behaviors in Cubane-like Copper Iodide Clusters by Ligand
Xueru Zhou1, Yanfeng Du1, Lintao Fan1
1Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China.
None:
Multilevel memory is a feasible solution for the explosive demand for data storage in the Big Data era. In this work, ligand engineering has been implemented in cubane-type Cu4I4L4 clusters to obtain three complexes: Cu4I4L4 (L = P(Ph-p-Cl)3 (1), PPh3 (2), P(Ph-p-OCH3)3 (3)), in which the substitutes on the p-position of benzyl vary from electron-withdrawing (-Cl) to electron-donating (-OCH3) groups. Interestingly, with enhancement of electron-donating ability, the trend of more distorted Cu4I4 cores, enhanced Cu···Cu interactions, and higher structural dimensions can be achieved. Consequently, in FTO/Cu4I4L4/Ag memristors, the electron-withdrawing group (-Cl) and neutral group (-H) exhibit bistable resistive switching performances, and a strong electron-donating group (-OCH3) can give ternary resistive switching behavior (OFF/ON1/ON2 current ratio: 1:102.74:103.73, VSet1/VSet2: 1.09/1.48 V). The mechanism about the elevation from binary to ternary memory behavior in these cubane-like Cu4I4L4 clusters has been clarified: the external voltage-induced I···Cl halogen bonding and C-H···π interaction contribute to the binary resistive switching performances in FTO/1/Ag and FTO/2/Ag, and the presence of the second conductive state in FTO/3/Ag stems from the injected carrier delocalization on the Cu4I4 core due to strong Cu···Cu interactions. The rules drawn in this work can provide a feasible strategy for the design of novel multilevel memories.
Related Concept Videos
01:26Binary Fission
01:20Binary Fission
03:12Freezing Point Depression and Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
01:22Switching of BJT
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
02:40Ligand Binding Sites
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
02:51Metal-Ligand Bonds
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...