RT info:eu-repo/semantics/article
T1 Highly fluorescent complexes with 3-isocyanoperylene and N-(2,5-di-tert-butylphenyl)-9-isocyano-perylene- 3,4-dicarboximide
A1 Lentijo, S.
A1 Expósito Fuertes, José Emilio
A1 Aullón, Gabriel
A1 Miguel García, Jesús Ángel
A1 Espinet Rubio, Pablo
K1 Chemistry
AB The perylene derivatives 3-isocyanoperylene (Per–N≡C) (4a) and N-(2,5-di-tert-butylphenyl)-9-isocyano-perylene-3,4-dicarboximide (PMI–N≡C) (4b) were prepared and used to synthesizegold complexes [AuX(CNR)] (X = C6F5 (5a,b), C6F4-OnBu-p (6b)). The reaction of 5b and 6bwith HNEt2 led the carbene complexes [AuX{C(NEt2)(NHR)}] (7b, 8b), respectively. Themolecular structure of complexes 7b, 8b have been determined by X-ray diffraction analysisshowing intermolecular π–stacking of the perylene groups and C6F5 rings, and no Au···Auinteractions. The derivative compounds [M(CO)5(CNR)] (M = Cr (9a,b), Mo (10a,b) or W(11a,b)) and trans-[Pd(CNR)2(C6F3Cl2)2] (12a,b) were also prepared. All complexes exhibitfluorescence associated to the perylene fragment with emission quantum yields, in solution atroom temperature, in the range 0.05 – 0.93 and emission lifetimes ~ 4 ns. DFT calculationswere performed of the absorption spectra of the ligands Per–N≡C and PMI–N≡C, andrepresentative complexes [Au(C6F5)(CNR)], [Cr(CO)5(CNR)], showing a perylene-dominatedintraligand π–π*emissive state, from the HOMO and LUMO orbitals of the perylenechromophore, but with significantly different absorption maxima by influence of the metalfragment, particularly significant in the Per–N≡C derivatives.
PB Royal Society of Chemistry
SN 1477-9226
YR 2014
FD 2014
LK http://uvadoc.uva.es/handle/10324/21767
UL http://uvadoc.uva.es/handle/10324/21767
LA eng
NO Dalton Transactions, 2014, 43, p. 10885-10897
NO Producción Científica
DS UVaDOC
RD 27-dic-2024