Evaluation of the potential effectiveness of ruthenium(II) complexes with 2,3-disubtituted pyrazino[2,3-f][1,10]phenanthroline anchors, R2ppl (R=CN, COOH, COOEt, OH) as sensitizers for solar cells

Francois, Angélica; Dı́az, Ramiro; Ramírez, Angélica Mendieta; Loeb, Bárbara; Barrera, Mario; Crivelli, Irma

doi:10.1016/j.poly.2012.12.003

Cited by 15 publications

(9 citation statements)

References 39 publications

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“…The ppl and ppz ligands were synthesized according to reported procedures. [18][19][20][21] The cyclometalated Ir(III) chloro-bridge dimers [Ir(F 2 ppy) 2 (μ-Cl)] 2 were synthesized following a synthetic route described in the literature. 22,23 Synthesis of the complexes [Ir(F 2 ppy) 2 (ppl)][PF 6 ].…”

Section: Generalmentioning

confidence: 99%

A comparative study of Ir(iii) complexes with pyrazino[2,3-f][1,10]phenanthroline and pyrazino[2,3-f][4,7]phenanthroline ligands in light-emitting electrochemical cells (LECs)

et al. 2015

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We report the comparative study of the electrochemical and photoluminescent properties of two Ir(iii) complexes described as [Ir(F2ppy)2(N^N)][PF6], where the F2ppy ligand is 2-(2,4-difluorophenyl)pyridine and the N^N ligands are pyrazino[2,3-f][1,10]phenanthroline (ppl) and pyrazino[2,3-f][4,7]phenanthroline (ppz). The complexes were used for the fabrication of light-emitting electrochemical cells (LECs). The structures of the complexes have been corroborated by X-ray crystallography. Theoretical calculations were performed to understand the photophysical behavior of the complexes. Both in solution and solid state, the photoluminescence spectra shows that emission is significantly red-shifted in the [Ir(F2ppy)2(ppz)][PF6] complex compared with the [Ir(F2ppy)2(ppl)][PF6] complex. Besides, the [Ir(F2ppy)2(ppl)][PF6] complex exhibits a higher quantum yield and a longer excited state lifetime than the [Ir(F2ppy)2(ppz)][PF6] complex; therefore, in the last case non-radiative decay is predominant due to the stabilization of LUMO orbital (energy gap law). In the fabrication of LEC devices with the [Ir(F2ppy)2(ppl)][PF6] complex, light emission was obtained with a maximum value of luminance equal to 177 cd m(-2), while in the case of the [Ir(F2ppy)2(ppz)][PF6] complex, no luminance was observed. According to the photophysical data, the performance in LEC devices could be explained by the different position of the nitrogens in the ppl and ppz structural isomers, electronically affecting the complex, and therefore its properties. In addition, from the crystallographic analysis it is possible to note that the [Ir(F2ppy)2(ppz)][PF6] complex shows enhanced intermolecular and intramolecular interactions compared with [Ir(F2ppy)2(ppl)][PF6], and consequently a higher ordering of the molecules in the complex with ppz ligand can be expected. This higher order could favour the quenching processes, and consequently enhance the non-radiative deactivation.

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Section: Generalmentioning

confidence: 99%

A comparative study of Ir(iii) complexes with pyrazino[2,3-f][1,10]phenanthroline and pyrazino[2,3-f][4,7]phenanthroline ligands in light-emitting electrochemical cells (LECs)

et al. 2015

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“…In this work, six N,N ligands derived from ppl ( L1‐6 ), and commercially available POP phosphine were used. The N,N ligands corresponds to: L1 : ppl ; [18] L2 : dppz ; [19] L3 : deppl ; [20] L4 : n2ppl ; [21] L5 : sppl ; [22] L6 : ppz [23] . The complexes C1 ‐ 7 were obtained in a two‐step reaction: (1) the addition of one molar equivalent of the N,N ligand to a solution of [Cu(CH 3 CN) 4 ]X (X: BF 4 or PF 6 ) in acetonitrile / CH 2 Cl 2 (1 : 1), followed by (2) the addition of one molar equivalent of the POP ligand (see Scheme 1).…”

Section: Resultsmentioning

confidence: 99%

“…All reagents were purchased from commercial sources, unless otherwise specified and used as received. Ligands and complexes C1 and C3 were prepared as described in literature [17–23] . NMR spectra were recorded on NMR Bruker AV 400.…”

Section: Methodsmentioning

confidence: 99%

Burning Rate Performance Study of Ammonium Perchlorate Catalyzed by Heteroleptic Copper(I) Complexes with Pyrazino[2,3‐f][1,10]phenanthroline‐Based Ligands

Escobar

Morales-Verdejo

Arroyo³

et al. 2021

Eur J Inorg Chem

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This contribution describes the catalytic effect of heteroleptic Cu(I) complexes with pyrazino[2,3‐f][1,10]phenanthroline‐based ligands (C1‐7) on the thermal decomposition of ammonium perchlorate (AP). The complexes C2 and C4‐7 were synthesized and characterized by NMR, HRMS and, in the case of C7, by X‐ray diffraction. The burning rate performance of C1‐7 on thermal decomposition of AP was studied by differential scanning calorimetry technique. The effect of the counter ion type, the number of metal centers and ligand substitution was evaluated. These AP+complex mixtures exerted a shift to lower ignition temperatures and an increase in the released heats during thermal decomposition compared with pure AP. The compound C4 showed the higher catalytic effect among the complexes series, and C5 exerted the highest energy release, in contrast to the other evaluated complexes and to the reported compounds CuO, [Cu2(en)2(HBTI)2]2 and Catocene.

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“…General Procedures for Synthesis: The ppl,27 deeppl,28 and iridium dimers ([Ir(ppy) 2 (μCl)] 2 and [Ir(F 2 ‐ppy) 2 (μCl)] 2 )5,29 were synthesized according to reported procedures. The cyclometalated Ir III complexes were synthesized with ca.…”

Section: Methodsmentioning

confidence: 99%

A Family of Ir^III Complexes with High Nonlinear Optical Response and Their Potential Use in Light‐Emitting Devices

et al. 2015

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We synthesized a new family of IrIII complexes [Ir(R1‐ppy)2(R2‐ppl)](PF6), where R1‐ppy = 2‐phenylpyridine (ppy) or 2,4‐difluorophenylpyridine (F2‐ppy) and R2‐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 R1 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 F2‐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.

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Evaluation of the potential effectiveness of ruthenium(II) complexes with 2,3-disubtituted pyrazino[2,3-f][1,10]phenanthroline anchors, R2ppl (R=CN, COOH, COOEt, OH) as sensitizers for solar cells

Cited by 15 publications

References 39 publications

A comparative study of Ir(iii) complexes with pyrazino[2,3-f][1,10]phenanthroline and pyrazino[2,3-f][4,7]phenanthroline ligands in light-emitting electrochemical cells (LECs)

A comparative study of Ir(iii) complexes with pyrazino[2,3-f][1,10]phenanthroline and pyrazino[2,3-f][4,7]phenanthroline ligands in light-emitting electrochemical cells (LECs)

Burning Rate Performance Study of Ammonium Perchlorate Catalyzed by Heteroleptic Copper(I) Complexes with Pyrazino[2,3‐f][1,10]phenanthroline‐Based Ligands

A Family of Ir^III Complexes with High Nonlinear Optical Response and Their Potential Use in Light‐Emitting Devices

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Evaluation of the potential effectiveness of ruthenium(II) complexes with 2,3-disubtituted pyrazino[2,3-f][1,10]phenanthroline anchors, R2ppl (R=CN, COOH, COOEt, OH) as sensitizers for solar cells

Cited by 15 publications

References 39 publications

A comparative study of Ir(iii) complexes with pyrazino[2,3-f][1,10]phenanthroline and pyrazino[2,3-f][4,7]phenanthroline ligands in light-emitting electrochemical cells (LECs)

A comparative study of Ir(iii) complexes with pyrazino[2,3-f][1,10]phenanthroline and pyrazino[2,3-f][4,7]phenanthroline ligands in light-emitting electrochemical cells (LECs)

Burning Rate Performance Study of Ammonium Perchlorate Catalyzed by Heteroleptic Copper(I) Complexes with Pyrazino[2,3‐f][1,10]phenanthroline‐Based Ligands

A Family of IrIII Complexes with High Nonlinear Optical Response and Their Potential Use in Light‐Emitting Devices

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A Family of Ir^III Complexes with High Nonlinear Optical Response and Their Potential Use in Light‐Emitting Devices