Surface confined assemblies and polymers for sensing and molecular logic

Graham de Ruiter; Marc Altman; Leila Motiei; Michal Lahav; Milko E. van der Boom

doi:10.1117/12.2030115

29 May 2013 Surface confined assemblies and polymers for sensing and molecular logic

Graham de Ruiter, Marc Altman, Leila Motiei, Michal Lahav, Milko E. van der Boom

Proceedings Volume 8725, Micro- and Nanotechnology Sensors, Systems, and Applications V; 872509 (2013) https://doi.org/10.1117/12.2030115
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

Since the development of molecule-based sensors and the introduction of molecules mimicking the behavior of the AND gate in solution by de Silva in 1993, molecular (Boolean) Logic and Computing (MBLC) has become increasingly popular. The molecular approach toward Boolean logic resulted in intriguing proofs of concepts in solution including logic gates, half-adders, multiplexers, and flip-flop logic circuits. Molecular assemblies can perform diverse logic tasks by reconfiguring their inputs. Our recent research activities focus on MBLC with electrochromic polymers and immobilized polypyridyl complexes on solid support. We have designed a series of coordination-based thin films that are formed linearly by stepwise wet-chemical deposition or by self-propagating molecular assembly. The electrochromic properties of these films can be used for (i) detecting various analytes in solution and in the air, (ii) MBLC, (iii) electron-transfer studies, and (iv) interlayers for efficient inverted bulk-heterojunction solar cells. Our concept toward MBLC with functionalized surfaces is applicable to electrochemical and chemical inputs coupled with optical readout. Using this approach, we demonstrated various logic architectures with redox-active functionalized surfaces. Electrochemically operated sequential logic systems (e.g., flip-flops), multi-valued logic, and multi-state memory have been designed, which can improve computational power without increasing spatial requirements. Applying multi-valued digits in data storage and information processing could exponentially increase memory capacity. Our approach is applicable to highly diverse electrochromic thin films that operate at practical voltages (< 1.5 V).

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Graham de Ruiter, Marc Altman, Leila Motiei, Michal Lahav, and Milko E. van der Boom "Surface confined assemblies and polymers for sensing and molecular logic", Proc. SPIE 8725, Micro- and Nanotechnology Sensors, Systems, and Applications V, 872509 (29 May 2013); https://doi.org/10.1117/12.2030115

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KEYWORDS

Molecular assembly

Logic

Data storage

Metals

Polymers

Palladium

Multilayers

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