Multi-Directional Mechanofluorochromism of Acetyl Pyrenes and Pyrenyl Ynones.
Chemphyschem
; 22(15): 1638-1644, 2021 08 04.
Article
en En
| MEDLINE
| ID: mdl-33971071
A series of acetyl pyrenes and pyrenyl ynones with and without tert-butyl groups showed distinct mechanofluorochromism (MFC). Four pairs of polymorphic solids were found out of six compounds and interestingly, each of them showed hypsochromic, bathochromic or off-to-on MFC. The MFC properties were rationalized by categorizing the packing schemes into herringbone, sandwich, beta and gamma motifs depending on the relative contributions of Câ
â
â
C (or π-π) against Câ
â
â
H contacts. The bulky tert-butyl and trimethylsilyl groups served not only to reduce the number of aggregation patterns but also to prohibit the complete back reactions in solid state. Our results suggest that the simple pyrene derivatives may be promising candidates for a novel group of mechanically-sensitive materials.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Chemphyschem
Asunto de la revista:
BIOFISICA
/
QUIMICA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
Alemania