Synthesis and electronic spectroscopy of luminescent cyclometalated platinum-anthracenyl complexes

Jian Hu; Ronger Lin; John H.K. Yip; Kwok Yin Wong; Ma Dik-Lung; Jagadese J. Vittal

doi:10.1021/om700706r

Synthesis and electronic spectroscopy of luminescent cyclometalated platinum-anthracenyl complexes

Jian Hu, Ronger Lin, John H.K. Yip^*, Kwok Yin Wong, Ma Dik-Lung, Jagadese J. Vittal

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

49 Citations (Scopus)

Abstract

Dicyclometalated complexes syn- and anti-[Pt₂(L) ₂(PAnP-H₂)](OTf)₂ (Pt₂) are synthesized from reactions of 9,10-bis(diphenylphosphino)anthracene (PAnP) and Pt(L)(OTf)₂ (L = diphosphines, OTf = CF₃SO₃). Because of metal perturbation on the electronic structure of the anthracenyl ring, the ¹B_2u^- ← ¹Ag transition, which is forbidden in anthracene, is observed in the electronic spectra of Pt₂. The complexes display fluorescence arising from the ligand-centered Si excited state. No significant heavy atom effect is observed in the Pt₂ complexes. To understand the effect of the number of Pt ions on the extent of perturbation, a mononuclear analogue, [Pt(dppe)(PAn-H)] ClO₄ (PAn = 9-diphenylphosphinoanthracene), is prepared and its spectroscopy studied.

Original language	English
Pages (from-to)	6533-6543
Number of pages	11
Journal	Organometallics
Volume	26
Issue number	26
DOIs	https://doi.org/10.1021/om700706r
Publication status	Published - 1 Dec 2007

Scopus Subject Areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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@article{a3862720be5145cdba85467bef857108,

title = "Synthesis and electronic spectroscopy of luminescent cyclometalated platinum-anthracenyl complexes",

abstract = "Dicyclometalated complexes syn- and anti-[Pt2(L) 2(PAnP-H2)](OTf)2 (Pt2) are synthesized from reactions of 9,10-bis(diphenylphosphino)anthracene (PAnP) and Pt(L)(OTf)2 (L = diphosphines, OTf = CF3SO3). Because of metal perturbation on the electronic structure of the anthracenyl ring, the 1B2u- ← 1Ag transition, which is forbidden in anthracene, is observed in the electronic spectra of Pt2. The complexes display fluorescence arising from the ligand-centered Si excited state. No significant heavy atom effect is observed in the Pt2 complexes. To understand the effect of the number of Pt ions on the extent of perturbation, a mononuclear analogue, [Pt(dppe)(PAn-H)] ClO4 (PAn = 9-diphenylphosphinoanthracene), is prepared and its spectroscopy studied.",

author = "Jian Hu and Ronger Lin and Yip, {John H.K.} and Wong, {Kwok Yin} and Ma Dik-Lung and Vittal, {Jagadese J.}",

note = "We thank Dr. Koh Lip Lin and Ms. Tan Geok Kheng for solving the X-ray crystal structures of the compounds, and National University of Singapore for financial support. K.-Y.W. acknowledges support from the Hong Kong Polytechnic University. ",

year = "2007",

month = dec,

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doi = "10.1021/om700706r",

language = "English",

volume = "26",

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journal = "Organometallics",

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T1 - Synthesis and electronic spectroscopy of luminescent cyclometalated platinum-anthracenyl complexes

AU - Hu, Jian

AU - Lin, Ronger

AU - Yip, John H.K.

AU - Wong, Kwok Yin

AU - Dik-Lung, Ma

AU - Vittal, Jagadese J.

N1 - We thank Dr. Koh Lip Lin and Ms. Tan Geok Kheng for solving the X-ray crystal structures of the compounds, and National University of Singapore for financial support. K.-Y.W. acknowledges support from the Hong Kong Polytechnic University.

PY - 2007/12/1

Y1 - 2007/12/1

N2 - Dicyclometalated complexes syn- and anti-[Pt2(L) 2(PAnP-H2)](OTf)2 (Pt2) are synthesized from reactions of 9,10-bis(diphenylphosphino)anthracene (PAnP) and Pt(L)(OTf)2 (L = diphosphines, OTf = CF3SO3). Because of metal perturbation on the electronic structure of the anthracenyl ring, the 1B2u- ← 1Ag transition, which is forbidden in anthracene, is observed in the electronic spectra of Pt2. The complexes display fluorescence arising from the ligand-centered Si excited state. No significant heavy atom effect is observed in the Pt2 complexes. To understand the effect of the number of Pt ions on the extent of perturbation, a mononuclear analogue, [Pt(dppe)(PAn-H)] ClO4 (PAn = 9-diphenylphosphinoanthracene), is prepared and its spectroscopy studied.

AB - Dicyclometalated complexes syn- and anti-[Pt2(L) 2(PAnP-H2)](OTf)2 (Pt2) are synthesized from reactions of 9,10-bis(diphenylphosphino)anthracene (PAnP) and Pt(L)(OTf)2 (L = diphosphines, OTf = CF3SO3). Because of metal perturbation on the electronic structure of the anthracenyl ring, the 1B2u- ← 1Ag transition, which is forbidden in anthracene, is observed in the electronic spectra of Pt2. The complexes display fluorescence arising from the ligand-centered Si excited state. No significant heavy atom effect is observed in the Pt2 complexes. To understand the effect of the number of Pt ions on the extent of perturbation, a mononuclear analogue, [Pt(dppe)(PAn-H)] ClO4 (PAn = 9-diphenylphosphinoanthracene), is prepared and its spectroscopy studied.

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SN - 0276-7333

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SP - 6533

EP - 6543

JO - Organometallics

JF - Organometallics

IS - 26

ER -

Synthesis and electronic spectroscopy of luminescent cyclometalated platinum-anthracenyl complexes

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