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A Family of Ir III Complexes with High Nonlinear Optical Response and Their Potential Use in Light‐Emitting Devices
Author(s) -
González Iván,
CortésArriagada Diego,
Dreyse Paulina,
SanhuezaVega Luis,
LedouxRak Isabelle,
Andrade Daniel,
Brito Iván,
ToroLabbé Alejandro,
SotoArriaza Marco,
Caramori Stefano,
Loeb Bárbara
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201500505
Subject(s) - substituent , chemistry , phenanthroline , nonlinear optical , charge (physics) , stereochemistry , crystallography , nonlinear system , physics , quantum mechanics
We synthesized a new family of Ir III complexes [Ir(R 1 ‐ppy) 2 (R 2 ‐ppl)](PF 6 ), where R 1 ‐ppy = 2‐phenylpyridine (ppy) or 2,4‐difluorophenylpyridine (F 2 ‐ppy) and R 2 ‐ppl = pyrazino[2,3‐ f ][1,10]phenanthroline (ppl) or 2,3‐diethoxycarbonylpyrazino [2,3‐ f ][1,10]phenanthroline (deeppl). The complexes were experimentally and theoretically characterized, noting the importance of the R 1 substituent on the modulation of HOMO level and its impact on the electronic properties. These compounds exhibit high second‐order nonlinear optics (NLO) activity, especially, those with F 2 ‐ppy ligands; this substituent modulates the charge transfer, optimizing the NLO response. The compounds also show blueshifted emissions, both in solution and as a solid film, which is desirable for use in light‐emitting devices. This is the first use of the synthesized complexes for application in the two tasks.