Synthesis and characterizations of cyclometalated iridium(III) solvento complexes

Schmid, B.; Garces, F. O.; Watts, Richard J.

doi:10.1021/ic00079a005

Cited by 164 publications

(148 citation statements)

References 2 publications

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“…[52][53][54] Technical-grade solvents were purchased from VWR/Prolabo and redistilled under reduced pressure at 40°C. Spectroscopic-grade methanol, dichloromethane, chloroform, and acetonitrile for spectroscopic measurements were purchased from Roth.…”

Section: Methodsmentioning

confidence: 99%

Protonation‐Dependent Luminescence of an Iridium(III) Bibenzimidazole Chromophore

et al. 2015

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We present the synthesis and a detailed structural and photophysical investigation of the bis(phenylpyridine)iridium(III) complex of 4,4Ј,5,5Ј-tetramethyl-2,2Ј-bibenzimidazole [Ir(tmBBI)-H 2 ] and its homodinuclear complex [Ir(tmBBI)Ir]. Their structures were determined by single-crystal X-ray diffraction analysis and NMR spectroscopy, and detailed UV/ Vis and emission spectroscopy studies were performed. Ir(tmBBI)-H x shows strong protonation-state-dependent lu-

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Section: Methodsmentioning

confidence: 99%

Protonation‐Dependent Luminescence of an Iridium(III) Bibenzimidazole Chromophore

et al. 2015

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“…Such solvation by strong coordinating solvents (H 2 O, CH 3 CN, DMF) has been already reported; the reaction products were not isolated because of re-formation of the corresponding chloro-bridged dimer. [16] The 1 H NMR spectrum of the DMSO adduct 3d-DMSO shows two different sets of signals for the magnetically nonequivalent C ∧ N ligands. For instance, two pyridine signals (py 6 ) are observed at low field at δ = 9.82 and 9.50 ppm.…”

Section: Synthesis Of the Metal Complexesmentioning

confidence: 99%

Synthesis and Photophysical Properties of Bis‐Cyclometallated Iridium(III)–Styryl Complexes and Their Saturated Analogues

Lepeltier

Lee

et al. 2007

Eur J Inorg Chem

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This manuscript reports the synthesis and photophysical investigation of a series of IrIII complexes Ir(C∧N)2(O∧O) which are functionalized in the para position of the pyridine ring by styryl groups substituted with electron‐donor and ‐acceptor end groups. The saturated derivative Ir(C∧N‐ppy‐4‐CH2CH2C6H4OMe)2(O∧O‐acac) (4a‐H2) was formed from [Ir(C∧N‐ppy‐4‐CH=CHC6H4OMe)2]2(μ‐Cl)2 (3a) at 140 °C, whereas at 80 °C the parent unsaturated complexes Ir(C∧N‐ppy‐4‐CH=CHC6H4R)2(O∧O) [OO = acac, R = OMe (4a), NEt2 (4b), H (4c), NO2 (4d); OO = dpm, R = OMe (5a), NEt2 (5b)] were isolated. The saturated complex 4a‐H2 exhibits intense green emission with a 36 % quantum yield at 298 K. The styryl complexes 4a–4d, 5a and 5b are very weakly emissive at 298 K, but show intense red luminescence in alcohol glass at 77 K. The amino‐ and nitro‐substituted complexes 4b and 4d give low‐energy emission (λem = 651 and 647 nm, respectively). The emissive states of these complexes are believed to possess predominant triplet intra‐ligand charge‐transfer (3ILCT) and metal‐to‐ligand charge‐transfer (3MLCT) character, respectively. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

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“…The solid was purified by recrystallization from CH 2 Cl 2 and hexane to provide red needlelike crystals (55 %, 0.296 g). 1 [ 27] Yield: 69 %. (1 equiv) and dibromo compound (1 equiv), including 2,7-dibromo-9,9-dioctylfluorene (M 2 ) and Ir complex monomer M 3 .…”

Section: Synthesis Of Monomermentioning

confidence: 99%

Simple Conjugated Polymers with On‐Chain Phosphorescent Iridium(III) Complexes: Toward Ratiometric Chemodosimeters for Detecting Trace Amounts of Mercury(II)

Shi¹,

Liu²,

Sun³

et al. 2010

Chemistry A European J

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For the development of excellent optical probes for mercury(II), a series of simple conjugated polymers that contain phosphorescent iridium(III) complexes as receptors for mercury(II) were designed and synthesized. These conjugated polymers showed energy transfer from the polymer host to iridium(III) complex guest in both solution and the solid state. Unexpectedly, they can work as excellent polymer chemodosimeters for mercury(II) by utilizing the mercury(II)-induced decomposition of iridium(III) complex. They exhibit a pronounced optical signal change with switchable phosphorescence and fluorescence, even when the concentration of a solution of mercury(II) in THF was as low as 0.5 ppb. With the addition of mercury(II), the phosphorescent emission intensity of iridium(III) complexes was quenched completely. As the emission from polymer backbones increased, the emission wavelength was redshifted simultaneously, thereby realizing ratiometric detection. Excellent selectivity toward mercury(II) over other potentially interfering cations was also realized. In addition, an obvious emission color change of polymer solution from red to yellow-green was observed, thus realizing a "naked-eye" detection of mercury(II). More importantly, the solid films of these polymer chemodosimeters also exhibited high sensitivity and rapid response to mercury(II), thereby demonstrating the possibility of the fabrication of sensing devices with fast and convenient detection of mercury(II). The sensing mechanism was also investigated in detail. This is the first report on chemodosimeters based on conjugated polymers with phosphorescent iridium(III) complexes.

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Synthesis and characterizations of cyclometalated iridium(III) solvento complexes

Cited by 164 publications

References 2 publications

Protonation‐Dependent Luminescence of an Iridium(III) Bibenzimidazole Chromophore

Protonation‐Dependent Luminescence of an Iridium(III) Bibenzimidazole Chromophore

Synthesis and Photophysical Properties of Bis‐Cyclometallated Iridium(III)–Styryl Complexes and Their Saturated Analogues

Simple Conjugated Polymers with On‐Chain Phosphorescent Iridium(III) Complexes: Toward Ratiometric Chemodosimeters for Detecting Trace Amounts of Mercury(II)

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