Triplet emission in platinum-containing poly(alkynylsilanes)

Wai Yeung WONG; Chun Kin Wong; Guo Liang Lu; Albert W M LEE; Kok Wai CHEAH; Jian Xin Shi

doi:10.1021/ma021209v

Triplet emission in platinum-containing poly(alkynylsilanes)

Wai Yeung WONG^*, Chun Kin Wong, Guo Liang Lu, Albert W M LEE, Kok Wai CHEAH, Jian Xin Shi

^*Corresponding author for this work

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

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Abstract

Synthetic routes to novel oligomeric and polymeric platinum(II)-containing alkynylsilanes were developed. Soluble and thermally stable platinum(II) poly(alkynylsilanes) trans-[-Pt(PBu₃)₂C≡C(p-C₆H₄)C ≡CSiPh₂C≡C(p-C₆H₄)C≡C-]_n were prepared in good yield by CuI-catalyzed condensation polymerization of trans-[PtCl₂(PBu₃)₂ with HC≡C(p-C₆H₄)C≡CSiPh₂C≡C(p-C ₆H₄)C≡CH. The regio-chemical structure of the polymer was studied by NMR (¹H, ¹³C, ²⁹Si, and ³¹P) spectroscopy. We report the optical absorption and photoluminescence spectra of such metal-based organosilicon polymer and compare the data with their oligomeric model complexes trans-[Pt(Ph)(PEt₃)₂C≡C(p-C₆H₄ )C≡CSiPh₂C≡C(p-C₆H₄)C≡CPt(Ph) (PEt₃)₂] and trans-[Pt(Ph)(PEt₃)₂C≡C(p-C₆H₄ )C≡CSiPh₂C≡C(p-C₆H₄)C≡CPt(PBu ₃)₂C≡C(p-C₆H₄)C≡CSiPh ₂C≡C(p-C₆H₄)C≡CPt(Ph)(PEt₃)₂]. Our studies indicate that such organometallic poly(alkynylsilanes) show a strong triplet emission with a very high efficiency of intersystem crossing from the S₁ singlet excited state to the T₁ triplet excited state. The dependence of intersystem crossing and the spatial extent of singlet and triplet excitons as a function of the central spacer group is discussed in polymetallaynes possessing SiPh₂, C₆H₄ and Pt(PR₃)₂ (R = Et, Bu) linkers. The photoconducting properties of such silicon-linked platinum polyyne are described.

Original language	English
Pages (from-to)	983-990
Number of pages	8
Journal	Macromolecules
Volume	36
Issue number	4
DOIs	https://doi.org/10.1021/ma021209v
Publication status	Published - 25 Feb 2003

Scopus Subject Areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma021209v

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@article{5e0f8317b0c3412a81405d06bc75bfde,

title = "Triplet emission in platinum-containing poly(alkynylsilanes)",

abstract = "Synthetic routes to novel oligomeric and polymeric platinum(II)-containing alkynylsilanes were developed. Soluble and thermally stable platinum(II) poly(alkynylsilanes) trans-[-Pt(PBu3)2C≡C(p-C6H4)C ≡CSiPh2C≡C(p-C6H4)C≡C-]n were prepared in good yield by CuI-catalyzed condensation polymerization of trans-[PtCl2(PBu3)2 with HC≡C(p-C6H4)C≡CSiPh2C≡C(p-C 6H4)C≡CH. The regio-chemical structure of the polymer was studied by NMR (1H, 13C, 29Si, and 31P) spectroscopy. We report the optical absorption and photoluminescence spectra of such metal-based organosilicon polymer and compare the data with their oligomeric model complexes trans-[Pt(Ph)(PEt3)2C≡C(p-C6H4 )C≡CSiPh2C≡C(p-C6H4)C≡CPt(Ph) (PEt3)2] and trans-[Pt(Ph)(PEt3)2C≡C(p-C6H4 )C≡CSiPh2C≡C(p-C6H4)C≡CPt(PBu 3)2C≡C(p-C6H4)C≡CSiPh 2C≡C(p-C6H4)C≡CPt(Ph)(PEt3 )2]. Our studies indicate that such organometallic poly(alkynylsilanes) show a strong triplet emission with a very high efficiency of intersystem crossing from the S1 singlet excited state to the T1 triplet excited state. The dependence of intersystem crossing and the spatial extent of singlet and triplet excitons as a function of the central spacer group is discussed in polymetallaynes possessing SiPh2, C6H4 and Pt(PR3)2 (R = Et, Bu) linkers. The photoconducting properties of such silicon-linked platinum polyyne are described.",

author = "WONG, {Wai Yeung} and Wong, {Chun Kin} and Lu, {Guo Liang} and LEE, {Albert W M} and CHEAH, {Kok Wai} and Shi, {Jian Xin}",

note = "We are grateful to the Hong Kong Research Grants Council (Grant HKBU 2054/02P) and the Hong Kong Baptist University for financial support. We also thank Dr. W. K. Chan at the University of Hong Kong for the access of his research facilities to perform the photocurrent measurements. ",

year = "2003",

month = feb,

day = "25",

doi = "10.1021/ma021209v",

language = "English",

volume = "36",

pages = "983--990",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

number = "4",

}

TY - JOUR

T1 - Triplet emission in platinum-containing poly(alkynylsilanes)

AU - WONG, Wai Yeung

AU - Wong, Chun Kin

AU - Lu, Guo Liang

AU - LEE, Albert W M

AU - CHEAH, Kok Wai

AU - Shi, Jian Xin

N1 - We are grateful to the Hong Kong Research Grants Council (Grant HKBU 2054/02P) and the Hong Kong Baptist University for financial support. We also thank Dr. W. K. Chan at the University of Hong Kong for the access of his research facilities to perform the photocurrent measurements.

PY - 2003/2/25

Y1 - 2003/2/25

N2 - Synthetic routes to novel oligomeric and polymeric platinum(II)-containing alkynylsilanes were developed. Soluble and thermally stable platinum(II) poly(alkynylsilanes) trans-[-Pt(PBu3)2C≡C(p-C6H4)C ≡CSiPh2C≡C(p-C6H4)C≡C-]n were prepared in good yield by CuI-catalyzed condensation polymerization of trans-[PtCl2(PBu3)2 with HC≡C(p-C6H4)C≡CSiPh2C≡C(p-C 6H4)C≡CH. The regio-chemical structure of the polymer was studied by NMR (1H, 13C, 29Si, and 31P) spectroscopy. We report the optical absorption and photoluminescence spectra of such metal-based organosilicon polymer and compare the data with their oligomeric model complexes trans-[Pt(Ph)(PEt3)2C≡C(p-C6H4 )C≡CSiPh2C≡C(p-C6H4)C≡CPt(Ph) (PEt3)2] and trans-[Pt(Ph)(PEt3)2C≡C(p-C6H4 )C≡CSiPh2C≡C(p-C6H4)C≡CPt(PBu 3)2C≡C(p-C6H4)C≡CSiPh 2C≡C(p-C6H4)C≡CPt(Ph)(PEt3 )2]. Our studies indicate that such organometallic poly(alkynylsilanes) show a strong triplet emission with a very high efficiency of intersystem crossing from the S1 singlet excited state to the T1 triplet excited state. The dependence of intersystem crossing and the spatial extent of singlet and triplet excitons as a function of the central spacer group is discussed in polymetallaynes possessing SiPh2, C6H4 and Pt(PR3)2 (R = Et, Bu) linkers. The photoconducting properties of such silicon-linked platinum polyyne are described.

AB - Synthetic routes to novel oligomeric and polymeric platinum(II)-containing alkynylsilanes were developed. Soluble and thermally stable platinum(II) poly(alkynylsilanes) trans-[-Pt(PBu3)2C≡C(p-C6H4)C ≡CSiPh2C≡C(p-C6H4)C≡C-]n were prepared in good yield by CuI-catalyzed condensation polymerization of trans-[PtCl2(PBu3)2 with HC≡C(p-C6H4)C≡CSiPh2C≡C(p-C 6H4)C≡CH. The regio-chemical structure of the polymer was studied by NMR (1H, 13C, 29Si, and 31P) spectroscopy. We report the optical absorption and photoluminescence spectra of such metal-based organosilicon polymer and compare the data with their oligomeric model complexes trans-[Pt(Ph)(PEt3)2C≡C(p-C6H4 )C≡CSiPh2C≡C(p-C6H4)C≡CPt(Ph) (PEt3)2] and trans-[Pt(Ph)(PEt3)2C≡C(p-C6H4 )C≡CSiPh2C≡C(p-C6H4)C≡CPt(PBu 3)2C≡C(p-C6H4)C≡CSiPh 2C≡C(p-C6H4)C≡CPt(Ph)(PEt3 )2]. Our studies indicate that such organometallic poly(alkynylsilanes) show a strong triplet emission with a very high efficiency of intersystem crossing from the S1 singlet excited state to the T1 triplet excited state. The dependence of intersystem crossing and the spatial extent of singlet and triplet excitons as a function of the central spacer group is discussed in polymetallaynes possessing SiPh2, C6H4 and Pt(PR3)2 (R = Et, Bu) linkers. The photoconducting properties of such silicon-linked platinum polyyne are described.

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U2 - 10.1021/ma021209v

DO - 10.1021/ma021209v

M3 - Journal article

AN - SCOPUS:0037465484

SN - 0024-9297

VL - 36

SP - 983

EP - 990

JO - Macromolecules

JF - Macromolecules

IS - 4

ER -

Triplet emission in platinum-containing poly(alkynylsilanes)

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