A structure-device performance correlation in bulk heterojunction solar cells for new indandione-derived small molecule electron acceptors, FEHIDT and F8IDT, is presented. Devices based on the former exhibit higher power conversion efficiency (2.4%) and higher open circuit voltage, a finding consistent with reduced intermolecular interactions.

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Single crystal X-ray, NEXAFS and OFET studies on angular polycyclic aromatic silyl-capped 7,14bis(ethynyl)dibenzo[b,def]chrysenes.

Milbemycin ß} (la), the simplest member of a family of some 13 architecturally novel macrolide antibiotics structurally related to the avermectins,2 was first isolated in 1975 by Mishima et al.3,4 from Streptomyces B-41-146. Subsequent screening demonstrated that this antibiotic complex possessed remarkably potent pesticidal activity4 against a host of agricultural pests, including aphids, la val forms of insects of the order fepidopera, mites, rice leaf beetles,