H.T. acknowledges the support of the NSFC/China (20273020, 90401026) and the Education Committee of Shanghai. We thank Prof. A. Prasanna de Silva (Queen's University) for his valuable comments and suggestions. A half adder is a logic circuit that performs one-digit addition.
A Half Adder Based on a Photochemically Driven Rotaxane†
Article first published online: 22 JUL 2005
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 44, Issue 33, pages 5296–5299, August 19, 2005
How to Cite
Qu, D.-H., Wang, Q.-C. and Tian, H. (2005), A Half Adder Based on a Photochemically Driven Rotaxane. Angew. Chem. Int. Ed., 44: 5296–5299. doi: 10.1002/anie.200501215
- Issue published online: 15 AUG 2005
- Article first published online: 22 JUL 2005
- Manuscript Revised: 9 JUN 2005
- Manuscript Received: 7 APR 2005
- molecular logic gates;
A molecular abacus: In a 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.