A stimuli-responsive double-stranded digold(I) helicate
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Tartalom: http://pubs.rsc.org/en/content/articlelanding/2014/ce/c3c...
Archívum: MTA Könyvtár
Gyűjtemény: Status = Published

Type = Article
Cím:
A stimuli-responsive double-stranded digold(I) helicate
Létrehozó:
Jobbágy, Csaba
Molnár, Miklós
Baranyai, Péter
Hamza, Andrea
Pálinkás, Gábor
Deák, Andrea Beáta
Dátum:
2014
Téma:
QD Chemistry / kémia
Tartalmi leírás:
We report herein a stimuli-responsive dinuclear double stranded [Au2L2]2+ helicate assembled from gold(I) atoms and phenyl-substituted diphosphine ligands derived from a xanthene-type backbone (L). The conformational flexibility of the dinuclear [Au2L2]2+ helicate allows a diversity of molecular conformations and packing arrangements that lead to different solid-state emission colours. Blue (IB), bluish green (IIG) and yellow (IIIY) emitting crystalline and red emitting (IVR) amorphous forms of this double stranded [Au2L2]2+ helicate have been obtained by slight modification of the crystallization conditions. Different molecular conformations and packing arrangements of dinuclear double stranded [Au2L2]2+ helicates that result in different non-covalent interactions played the most significant role in tailoring the solid-state luminescence properties. On the basis of the single crystal structural data and photophysical studies, we found that an increasing number of intra- and mainly intermolecular noncovalent interactions locked and rigidified the twisted conformation of the double stranded [Au2L2]2+ helicate, and enhanced ?-stacking between its aromatic units induced the red-shift in solid-state luminescence emission. The solid-state luminescence colour of this double stranded [Au2L2]2+ helicate can be switched reversibly from blue to red by external (mechanical and chemical) stimuli.
Típus:
Article
PeerReviewed
Formátum:
text
Azonosító:
Jobbágy, Csaba and Molnár, Miklós and Baranyai, Péter and Hamza, Andrea and Pálinkás, Gábor and Deák, Andrea Beáta (2014) A stimuli-responsive double-stranded digold(I) helicate. CRYSTENGCOMM, 16. pp. 3192-3202. ISSN 1466-8033
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