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A Half Adder Based on a Photochemically Driven [2]Rotaxane
Author(s) -
Qu DaHui,
Wang QiaoChun,
Tian He
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200501215
Subject(s) - photoisomerization , rotaxane , thread (computing) , absorbance , fluorescence , supercontinuum , adder , chemistry , molecule , photochemistry , computer science , materials science , physics , optoelectronics , optics , supramolecular chemistry , cmos , organic chemistry , isomerization , fiber , photonic crystal fiber , chromatography , operating system , catalysis
A molecular abacus : In a [2]rotaxane that mimicks a half adder with distinct AND and XOR logic gates, all the inputs (I) and outputs (O) are photochemical (see scheme; F =fluorescence, A =absorbance). Reversible E → Z photoisomerization about two double bonds (shown in red and dark blue) in the thread molecule leads to four conformers that have different spectral properties.