We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Thieno[3,4‐c]pyrrole‐4,6‐dione Oligothiophenes Have Two Crossed Paths for Electron Delocalization.
- Authors
Yuan, Dafei; Medina Rivero, Samara; Mayorga Burrezo, Paula; Ren, Longbin; Sandoval‐Salinas, María E.; Grabowski, Sławomir J.; Casanova, David; Zhu, Xiaozhang; Casado, Juan
- Abstract
Abstract: A new series of electron‐deficient oligothiophenes, thieno[3,4‐c]pyrrole‐4,6‐dione oligothiophenes (OTPDn), from the monomer to hexamer, is reported. The optical and structural properties in the neutral states have been analyzed by absorption and emission spectroscopy together with vibrational Raman spectroscopy. In their reduced forms, these molecules could stabilize both anions and dianions in similar ways. For the dianions, two independent modes of electron conjugation of the charge excess were observed: the interdione path and the interthiophene path. The interference of these two paths highlighted the existence of a singlet diradical ground electronic state and the appearance of low‐energy, thermally accessible triplet states. These results provide valuable insights into the device performance of TPD‐based materials and for the rational design of new high‐performance organic semiconductors.
- Subjects
PYRROLES; OLIGOTHIOPHENES; ELECTRON delocalization; ELECTRON-deficient compounds; MONOMERS; EMISSION spectroscopy
- Publication
Chemistry - A European Journal, 2018, Vol 24, Issue 51, p13523
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201801880