About the cover

November 2017 Volume 9 No 11

Both the topology and the properties of woven materials have inspired researchers to explore their molecular counterparts, but it is challenging to weave at such small scales. Now, a team led by Helma Wennemers have devised a staple-shaped organic building block – with a rigid oligoproline segment in the middle and perylene–monoimide groups at each end – that self-assembles into a triaxial weave (shown schematically on the cover). The ends of the threads stack through ππ interactions to form linear chains with alternating up- and down-facing voids, which in turn serve as crossing points that hold the threads together in the woven structure through CH–π interactions. Article p1068; News & Views p1037

IMAGE: ILDAR BAYAZITOV AND ELLA MARUSHCHENKO (ELLA MARU STUDIO, INC.)
COVER DESIGN: TULSI VORALIA