A new co-oligomer constituted by both a thiophene sequence bearing a 3,4-dialkyl substitution, imparting processability, and by end-capping fluorenone moieties, has been synthesised. The molecule, potentially suitable for close-packing aptness, has been characterized by means of combined optical, thermal, structural, and morphological analyses, showing that, despite the O–H intermolecular interaction favoured by fluorenone presence, the large steric hindrance specific to the dialkyl 3,4-disubstitution strongly limits the intermolecular interaction. Hence it makes such substitution pattern unsuitable for field effect transistor application, as it is confirmed by the electrical performances measured on prototype devices.

Suitability of 3,4-dialkyl substitution in molecular crystal based on thiophene-fluorenone for organic field effect transistors

FUMAGALLI, LUCA;NATALI, DARIO ANDREA NICOLA;SAMPIETRO, MARCO
2009-01-01

Abstract

A new co-oligomer constituted by both a thiophene sequence bearing a 3,4-dialkyl substitution, imparting processability, and by end-capping fluorenone moieties, has been synthesised. The molecule, potentially suitable for close-packing aptness, has been characterized by means of combined optical, thermal, structural, and morphological analyses, showing that, despite the O–H intermolecular interaction favoured by fluorenone presence, the large steric hindrance specific to the dialkyl 3,4-disubstitution strongly limits the intermolecular interaction. Hence it makes such substitution pattern unsuitable for field effect transistor application, as it is confirmed by the electrical performances measured on prototype devices.
2009
sezele
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/517756
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 11
social impact