Reversible and Persistent Electrical Bistability in Single Crystals of a Self-Assembled π-Conjugated Tetraaryl System:  A Submicrometer Scale Electrical Characterization

Abstract

A new pi-conjugated electroactive 4,4'-bipyridinium that bears two pyridazone self-complementary units was prepared and characterized. The new system readily assembles and forms at least two stable charge-transfer crystalline structures having a thermal population of unpaired electrons. The crystals of one phase exhibit electrical bistability, displaying either high (ON) and low (OFF) conductivity, at the same applied bias, depending on the electrical history of the system. The relation between the supramolecular structure of the crystals and their electrical properties is also discussed.

Conductive Properties of Switchable Photoluminescence Thermosetting Systems Based on Liquid Crystals

“…From this point of view, the advance tunneling atomic force microscopy (TUNA) method can be an interesting approach in order to better understand the physical and electrical behavior of the LC molecules embedded in the polymeric matrices. This method allows for a better understanding of the current conduction mechanism through dielectric materials at the nanoscale when a DC voltage is applied between the conductive AFM probe and the back side of the sample. − …”

Nonvolatile memory devices based on polyimides bearing noncoplanar twisted biphenyl units containing carbazole and triphenylamine side-chain groups

“…1,3 As a result, significant research effort is currently being invested in the development of polymer switching materials with properties and processability that meet the requirements of memory devices. A number of polymer materials, including conjugated polymers, [3][4][5][6][7][8][9][10][11][12][13][14][15] dopants, [16][17][18] and complex systems, [19][20][21][22][23][24][25][26] have been investigated for electronic memory applications. The materials, devices, and mechanistic a Applied Chemistry Department, School of Material Science & Engineering Nanjing University of Aeronautics &Astronautics, Nanjing, 210016, P.R.…”

Electronic Memory Effects in a Sexithiophene−Poly(ethylene oxide) Block Copolymer Doped with NaCl. Combined Diode and Resistive Switching Behavior

“…The possibility of using π-conjugated polymers in electronic memory elements is currently being explored by a large number of research groups . One of the approaches being followed is to make diode-like structures for which the resistance at a particular “read” voltage can be modified by application of a higher voltage .…”