Healable,e lectrically conductive materials are highly desirable and valuable for the development of various modern electronics.But the preparation of amaterial combining good mechanical elasticity,f unctional properties,a nd intrinsic self-healing ability remains ag reat challenge.H ere, we design composites by connecting ap olymer network and single-walled carbon nanotubes (SWCNTs) through hostguest interactions.The resulting materials show bulk electrical conductivity,proximitysensitivity,humidity sensitivity and are able to self-heal without external stimulus under ambient conditions rapidly.F urthermore,t hey also possess elasticity comparable to commercial rubbers.

ESI-TOF and APCI-MSn have proved to be effective tools for research on fragmentation mechanism of steroid saponins and the rapid determination of native steroid saponins in extract mixture, thereby avoiding tedious derivation and separation steps.

Four new iridoids, valeriotetrates B and C (1 and 2), 8-methylvalepotriate (3), and 1,5-dihydroxy-3,8-epoxyvalechlorine A (4), together with three known iridoids, were isolated from the roots of Valeriana wallichii. The structures of the new compounds were elucidated by analysis of 1D and 2D NMR and HRESIMS data. Compound 4 is an unusual iridoid bearing a C-10 chloro group and an oxo bridge connecting C-3 and C-8, resulting in a rigid skeleton.