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Science 9 April 2004:
Vol. 304. no. 5668, p. 167
DOI: 10.1126/science.304.5668.167c
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Chirality can appear at the level of an individual molecule, and also in the construction of aggregates, which can be built up from achiral materials. De Jong et al. (p. 278) have constructed a molecular system in which the chiralities at these two size scales communicate with each other through a series of thermally or optically activated transitions. Both stable and metastable aggregates can be obtained in gel form, with photoinitiated switching between them.




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