Molecular Memories That Survive Silicon Device Processing and Real-World Operation

Abstract

If molecular components are to be used as functional elements in place of the semiconductor-based devices present in conventional microcircuitry, they must compete with semiconductors under the extreme conditions required for processing and operating a practical device. Herein, we demonstrate that porphyrin-based molecules bound to Si(100), which exhibit redox behavior useful for information storage, can meet this challenge. These molecular media in an inert atmosphere are stable under extremes of temperature (400 degrees C) for extended periods (approaching 1 hour) and do not degrade under large numbers of read-write cycles (10(12)).

Wet chemical routes to the assembly of organic monolayers on silicon surfaces via the formation of Si–C bonds: surface preparation, passivation and functionalization

“…These include complex wiring, 45 the required stability with regards to a large number of read-write cycles, 280 and the requirement to minimize the damage to the organic layer after a solid contact is made. 67,165,281 While a practical molecular memory device would be required to withstand extreme operational conditions, 280 on the contrary, real-world applications of modified silicon surfaces in the field of chemical 266 and biological sensing appear to be less demanding. 60 The design of tailored interfaces benefits from numerous chemical strategies now available for the reaction of the Si-H surface with organic molecules.…”

Morphology and properties of a hybrid organic-inorganic system: Al nanoparticles embedded into CuPc thin film

“…There are tremendous worldwide efforts to develop new memory devices for long-term storage of the information. 1,2 The new kind of memory based on switchable resistive materials is commonly ranked as resistive random-access memory (RRAM). Hybrid systems, mainly consisting of inorganic nanoparticles (NPs) blended into an organic matrix, have been proposed as one type of RRAM.…”

[3+2]-Cycloaddition Reaction between Tetraphenylporphyrinylazide and Ferrocenyl Dipolarophiles

“…[13][14][15][16][17][18] Thus, such structures have been used as molecular sensors [19,20] and for an increase of memory density that allowed multibit information storage. [21][22][23] Previously, we have studied the reductive amination reaction of ferrocenylpyrazolecarboxaldehydes with 5-( p-aminophenyl)-10,15,20-triphenylporphyrin. [22,24,25] [3+2]-Cycloaddition Reaction between Tetraphenyl Porphyrinazide and Ferrocenyl Dipolarophiles Therefore, we used these reactions to produce ferroceneporphyrins in which the ferrocene is linked to porphyrin through the pyrazole.…”