Surface confined assemblies and polymers for sensing and molecular logic

Graham De Ruiter, Marc Altman, Leila Motiei, Michal Lahav, Milko E. Van Der Boom

Research output: Contribution to journalConference articlepeer-review


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) electrontransfer 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).

Original languageEnglish
Article number872509
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Aug 12 2013
Event2013 Micro- and Nanotechnology Sensors, Systems, and Applications V Conference - Baltimore, MD, United States
Duration: Apr 29 2013May 3 2013


  • Boolean logic
  • Electrochromic
  • Memory
  • Polymers
  • Sensors
  • Thin films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Surface confined assemblies and polymers for sensing and molecular logic'. Together they form a unique fingerprint.

Cite this