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Molecular Logic Gates Based on Pentacyanoferrate Complexes: From Simple Gates to Three‐Dimensional Logic Systems
Author(s) -
Szaciłowski Konrad
Publication year - 2004
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200305663
Subject(s) - logic gate , solvation , curse of dimensionality , solvation shell , and gate , chemistry , volume (thermodynamics) , simple (philosophy) , computational chemistry , molecule , materials science , mathematics , thermodynamics , physics , computer science , algorithm , organic chemistry , artificial intelligence , philosophy , epistemology
The article presents new aspects of reactivity of two pentacyanoferrates: [Fe(CN) 5 NO] 2− and [Fe(CN) 5 N(O)SR] 3− . The dependence of thermodynamic functions on cations was found for the reaction between nitroprusside and thiolate. The thermodynamic data are interpreted in terms of ion pairing and changes in the solvation shell of the cations. It was found that the reaction enthalpies and entropies depend strongly on the cation radius. The reaction volume in turn is strongly affected by the structure and properties of the hydration shell. Careful data analysis allowed the contribution of partial cation dehydration to the total reaction volume to be determined. The experimental results were also interpreted in terms of chemical logic gates. Complex logic systems were built from a number of cells containing a switching compound arranged in different geometric patterns. Increasing the dimensionality of these arrangements leads to really complex logic systems containing up to 20 AND and OR logic gates. The system is capable of processing up to 16 bits of input data.