Isomerically Pure Star‐Shaped Triphenylene–Perylene Hybrids Involving Highly Extended π‐Conjugation

Preparing isomerically pure beams of short-lived nuclei at JYFLTRAP

A new procedure to prepare isomerically clean samples of ions with a mass resolving power of more than 1×10 has been developed at the JYFLTRAP tandem Penning trap system. The method utilises a dipolar rf-excitation of the ion motion with separated oscillatory fields in the precision trap. During a subsequent retransfer to the purification trap, the contaminants are rejected and as a consequence...

Isomerically pure electron-deficient anthradithiophenes and their acceptor performance in polymer solar cells.

Amide functionalized anthradithiophenes (ADTs) play active acceptor roles in polymer bulk-heterojunction solar cells. The first separation of ADT isomers is reported, and the regiochemistry of the ADT has significant impact on crystal packing and solar cell performance. Cell efficiency up to 0.80%, due in large part to high open-circuit voltage (V(OC) > 1.0 V), is achieved in bulk-heterojunctio...

Facile synthesis of isomerically pure fullerenols and formation of spherical aggregates from C60(OH)8.

On starshaped fuzzy sets

In this paper we firstly define some new types of fuzzy starshapedness, discuss the relationships among the different types of fuzzy starshapedness, and then present some basic properties of them. Finally we develop several important results on the shadows of starshaped fuzzy sets. © 2008 Elsevier B.V. All rights reserved.

Regioisomerically pure multiaryl coronene derivatives: highly efficient synthesis via bay-extended perylene tetrabutylester.

By a facile strategy, we obtained three pure regioisomers of multiaryl coronene bisimide (CBI) derivatives via IBr-mediated annelation and subsequent Suzuki coupling reactions with high yields. A series of aromatic groups with different electron properties were efficiently introduced to obtain functional CBI derivatives under mild conditions with good yields. Furthermore, the annelation mechani...