A Deep-Red-Emitting Perylenediimide-Iridium-Complex Dyad: Following the Photophysical Deactivation Pathways

被引：38

作者：

Costa, Ruben D. ^{[1
]}

Cespedes-Guirao, Francisco J. ^{[2
]}

Bolink, Henk J. ^{[1
,3
]}

Fernandez-Lazaro, Fernando ^{[2
]}

Sastre-Santos, Angela ^{[2
]}

Orti, Enrique ^{[1
]}

Gierschner, Johannes ^{[1
,4
]}

机构：

[1] Univ Valencia, Inst Ciencia Mol, Valencia, Spain

[2] Univ Miguel Hernandez, Inst Bioingn, Div Quim Organ, Alicante 03202, Spain

[3] FGUV, Valencia, Spain

[4] UAM, IMDEA Nanosci, Madrid Inst Adv Studies, Madrid 28049, Spain

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 44期

关键词：

TRIPLET EXCITED-STATE; FUNCTIONAL RESPONSE THEORY; FIELD-EFFECT TRANSISTORS; SENSITIZED SOLAR-CELLS; ION PAIR STATES; ELECTRON-TRANSFER; ELECTROLUMINESCENT DEVICES; EXCITATION-ENERGIES; CHARGE-TRANSPORT; SINGLE-MOLECULE;

D O I：

10.1021/jp904760s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We elucidate the photophysical deactivation pathways of a novel perylenediimide-iridium-complex dyad (PDI-iridium), suitable for deep-red electroluminescent devices, in a joint experimental and quantum-chemical approach. Excitation of the PDI mainly decays via PDI fluorescence (55%), although a considerable part is deactivated via the PDI triplet by efficient spin-orbit coupling activated by the close-by iridium atom. Upon irradiation of the Ir-complex moiety, the phosphorescence usually observed for iridium complexes is efficiently quenched by triplet-triplet transfer to the PDI triplet, as demonstrated by transient absorption spectroscopy. The study reveals the importance of molecular orbital level control on the design of molecular dyads, which can be well-predicted at a quantum-chemical level

引用

页码：19292 / 19297

页数：6

共 60 条

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