A simplicity-guided approach toward molecular set–reset memories

Photochromic switches fulfill the general molecular design criteria for the surprisingly straightforward small-scale integration of seemingly complex set-reset latches. The implications of this re-interpretation are discussed with the example of a dithienylethene photochrome. The concept is shown to be valid for a multitude of well-introduced bistable switches with clearly differentiated output signals, e.g., optical signals for the presented example.

[1]  Joakim Andréasson,et al.  Molecular all-photonic encoder-decoder. , 2008, Journal of the American Chemical Society.

[2]  Uwe Pischel,et al.  Digital Operations with Molecules ― Advances, Challenges, and Perspectives , 2010 .

[3]  N. Branda,et al.  1,2-Dithienylethene Photochromes and Non-destructive Erasable Memory , 2002 .

[4]  I. Willner,et al.  Coherent activation of DNA tweezers: a "SET-RESET" logic system. , 2009, Angewandte Chemie.

[5]  Alberto Credi,et al.  Multistable Self-Assembling System with Three Distinct Luminescence Outputs: Prototype of a Bidirectional Half Subtractor and Reversible Logic Device , 2010 .

[6]  Joakim Andréasson,et al.  An all-photonic molecular keypad lock. , 2009, Chemistry.

[7]  Uwe Pischel,et al.  Smart molecules at work--mimicking advanced logic operations. , 2010, Chemical Society reviews.

[8]  Uwe Pischel,et al.  Advanced molecular logic with memory function. , 2010, Angewandte Chemie.

[9]  He Tian,et al.  An electrochemical/photochemical information processing system using a monolayer-functionalized electrode. , 2006, Chemical communications.

[10]  Masahiro Irie,et al.  Diarylethenes for Memories and Switches. , 2000, Chemical reviews.

[11]  A. P. de Silva,et al.  Molecular logic and computing. , 2007, Nature nanotechnology.

[12]  Graham de Ruiter,et al.  Sequential logic operations with surface-confined polypyridyl complexes displaying molecular random access memory features. , 2010, Angewandte Chemie.

[13]  Alvaro Fernandez-Acebes,et al.  Optical Switching and Fluorescence Modulation Properties of Photochromic Metal Complexes Derived from Dithienylethene Ligands , 1999 .

[14]  K. Szaciłowski Digital information processing in molecular systems. , 2008, Chemical reviews.

[15]  Giacomo Bergamini,et al.  Old molecules, new concepts: [Ru(bpy)(3)](2+) as a molecular encoder-decoder. , 2009, Angewandte Chemie.

[16]  Joakim Andréasson,et al.  Photochromic supramolecular memory with nondestructive readout. , 2010, Angewandte Chemie.

[17]  Uwe Pischel,et al.  Multivalued Logic with a Tristable Fluorescent Switch , 2009 .

[18]  K. Matsuda,et al.  Very High Cyclization Quantum Yields of Diarylethene Having Two N-Methylpyridinium Ions , 2003 .

[19]  Uwe Pischel,et al.  Chemical approaches to molecular logic elements for addition and subtraction. , 2007, Angewandte Chemie.

[20]  Francoise Remacle,et al.  Electrochemically driven sequential machines: an implementation of copper rotaxanes. , 2009, Chemistry.

[21]  Jian Zhou,et al.  Set-reset flip-flop memory based on enzyme reactions: toward memory systems controlled by biochemical pathways. , 2009, The journal of physical chemistry. B.

[22]  Uwe Pischel,et al.  Reversible molecular logic: a photophysical example of a Feynman gate. , 2009, Chemphyschem : a European journal of chemical physics and physical chemistry.

[23]  E. Akkaya,et al.  Novel squaraine signalling Zn(II) ions: three-state fluorescence response to a single input , 2000 .

[24]  Tyler B. Norsten,et al.  Axially Coordinated Porphyrinic Photochromes for Non‐destructive Information Processing , 2001 .

[25]  Galina Melman,et al.  A molecular keypad lock: a photochemical device capable of authorizing password entries. , 2007, Journal of the American Chemical Society.

[26]  H. Tian,et al.  A fluorophore capable of crossword puzzles and logic memory. , 2007, Angewandte Chemie.

[27]  David Margulies,et al.  Fluorescein as a model molecular calculator with reset capability , 2005, Nature materials.