Synthesis, photophysics and pyrolytic ceramization of a platinum(II)-containing poly(germylacetylene) polymer

Cheuk Lam Ho; Suk Yue Poon; Kun Liu; Chun Kin Wong; Guo Liang Lu; Srebri Petrov; Ian Manners; Wai Yeung Wong

doi:10.1016/j.jorganchem.2013.06.027

Synthesis, photophysics and pyrolytic ceramization of a platinum(II)-containing poly(germylacetylene) polymer

Cheuk Lam Ho^*, Suk Yue Poon, Kun Liu, Chun Kin Wong, Guo Liang Lu, Srebri Petrov, Ian Manners, Wai Yeung Wong

^*Corresponding author for this work

Department of Chemistry

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

19 Citations (Scopus)

Abstract

A synthetic route to a new polymeric platinum(II)-containing germylacetylene has been developed. Soluble and thermally stable platinum(II) polyyne polymer trans-[ePt(PBu₃)₂C=CGePh₂C=Ce]n (P1) was prepared in good yield by CuI-catalyzed polymerization of trans-[Pt(PBu3)2Cl2] and Ph2Ge(C=CH)₂. We report the optical absorption and photoluminescence spectra of P1 and the results are compared with platinum(II) polyynes with purely acetylenic and other (hetero)aromatic conjugated units. Harvesting of organic triplet emission harnessed through the strong heavy-atom effect of Pt and Ge was examined. Polymer P1 was found to have a high optical bandgap (ca. 3.84 eV). The influence of metal and sp3-hybridized germyl-based conjugation interrupter on the intersystem crossing rate and the spatial extent of the lowest singlet and triplet excitons were fully elucidated. Our investigations indicate that a high-bandgap polymer P intrinsically gives rise to a very efficient phosphorescence with fast radiative decay. Remarkably, a simple single-step method was also established for the synthesis of platinum egermanium (PtGe) alloy nanoparticles using P1 as the polymer precursor and the resulting ceramic metal alloys have been characterized by powder X-ray diffraction, energy dispersive X-ray analysis and transmission electron microscopy.

Original language	English
Pages (from-to)	165-171
Number of pages	7
Journal	Journal of Organometallic Chemistry
Volume	744
DOIs	https://doi.org/10.1016/j.jorganchem.2013.06.027
Publication status	Published - 1 Nov 2013

Scopus Subject Areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

User-Defined Keywords

Acetylide
Germanium
Nanoparticles
Phosphorescence
Platinum

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10.1016/j.jorganchem.2013.06.027

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@article{acbae4fa428a4ef781b88ea86a69a64a,

title = "Synthesis, photophysics and pyrolytic ceramization of a platinum(II)-containing poly(germylacetylene) polymer",

abstract = "A synthetic route to a new polymeric platinum(II)-containing germylacetylene has been developed. Soluble and thermally stable platinum(II) polyyne polymer trans-[ePt(PBu3)2C=CGePh2C=Ce]n (P1) was prepared in good yield by CuI-catalyzed polymerization of trans-[Pt(PBu3)2Cl2] and Ph2Ge(C=CH)2. We report the optical absorption and photoluminescence spectra of P1 and the results are compared with platinum(II) polyynes with purely acetylenic and other (hetero)aromatic conjugated units. Harvesting of organic triplet emission harnessed through the strong heavy-atom effect of Pt and Ge was examined. Polymer P1 was found to have a high optical bandgap (ca. 3.84 eV). The influence of metal and sp3-hybridized germyl-based conjugation interrupter on the intersystem crossing rate and the spatial extent of the lowest singlet and triplet excitons were fully elucidated. Our investigations indicate that a high-bandgap polymer P intrinsically gives rise to a very efficient phosphorescence with fast radiative decay. Remarkably, a simple single-step method was also established for the synthesis of platinum egermanium (PtGe) alloy nanoparticles using P1 as the polymer precursor and the resulting ceramic metal alloys have been characterized by powder X-ray diffraction, energy dispersive X-ray analysis and transmission electron microscopy.",

keywords = "Acetylide, Germanium, Nanoparticles, Phosphorescence, Platinum",

author = "Ho, {Cheuk Lam} and Poon, {Suk Yue} and Kun Liu and Wong, {Chun Kin} and Lu, {Guo Liang} and Srebri Petrov and Ian Manners and Wong, {Wai Yeung}",

note = "Funding Information: This work was financially supported by Hong Kong Baptist University ( FRG2/11-12/156 ), Hong Kong Research Grants Council ( HKBU203312 ) and Areas of Excellence Scheme, University Grants Committee of HKSAR, P.R. China (Project No. [AoE/P-03/08]). W.-Y.W. and I.M. also thank financial support from the Royal Society International Exchanges Scheme (RS reference number IE110647). ",

year = "2013",

month = nov,

day = "1",

doi = "10.1016/j.jorganchem.2013.06.027",

language = "English",

volume = "744",

pages = "165--171",

journal = "Journal of Organometallic Chemistry",

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TY - JOUR

T1 - Synthesis, photophysics and pyrolytic ceramization of a platinum(II)-containing poly(germylacetylene) polymer

AU - Ho, Cheuk Lam

AU - Poon, Suk Yue

AU - Liu, Kun

AU - Wong, Chun Kin

AU - Lu, Guo Liang

AU - Petrov, Srebri

AU - Manners, Ian

AU - Wong, Wai Yeung

N1 - Funding Information: This work was financially supported by Hong Kong Baptist University ( FRG2/11-12/156 ), Hong Kong Research Grants Council ( HKBU203312 ) and Areas of Excellence Scheme, University Grants Committee of HKSAR, P.R. China (Project No. [AoE/P-03/08]). W.-Y.W. and I.M. also thank financial support from the Royal Society International Exchanges Scheme (RS reference number IE110647).

PY - 2013/11/1

Y1 - 2013/11/1

N2 - A synthetic route to a new polymeric platinum(II)-containing germylacetylene has been developed. Soluble and thermally stable platinum(II) polyyne polymer trans-[ePt(PBu3)2C=CGePh2C=Ce]n (P1) was prepared in good yield by CuI-catalyzed polymerization of trans-[Pt(PBu3)2Cl2] and Ph2Ge(C=CH)2. We report the optical absorption and photoluminescence spectra of P1 and the results are compared with platinum(II) polyynes with purely acetylenic and other (hetero)aromatic conjugated units. Harvesting of organic triplet emission harnessed through the strong heavy-atom effect of Pt and Ge was examined. Polymer P1 was found to have a high optical bandgap (ca. 3.84 eV). The influence of metal and sp3-hybridized germyl-based conjugation interrupter on the intersystem crossing rate and the spatial extent of the lowest singlet and triplet excitons were fully elucidated. Our investigations indicate that a high-bandgap polymer P intrinsically gives rise to a very efficient phosphorescence with fast radiative decay. Remarkably, a simple single-step method was also established for the synthesis of platinum egermanium (PtGe) alloy nanoparticles using P1 as the polymer precursor and the resulting ceramic metal alloys have been characterized by powder X-ray diffraction, energy dispersive X-ray analysis and transmission electron microscopy.

AB - A synthetic route to a new polymeric platinum(II)-containing germylacetylene has been developed. Soluble and thermally stable platinum(II) polyyne polymer trans-[ePt(PBu3)2C=CGePh2C=Ce]n (P1) was prepared in good yield by CuI-catalyzed polymerization of trans-[Pt(PBu3)2Cl2] and Ph2Ge(C=CH)2. We report the optical absorption and photoluminescence spectra of P1 and the results are compared with platinum(II) polyynes with purely acetylenic and other (hetero)aromatic conjugated units. Harvesting of organic triplet emission harnessed through the strong heavy-atom effect of Pt and Ge was examined. Polymer P1 was found to have a high optical bandgap (ca. 3.84 eV). The influence of metal and sp3-hybridized germyl-based conjugation interrupter on the intersystem crossing rate and the spatial extent of the lowest singlet and triplet excitons were fully elucidated. Our investigations indicate that a high-bandgap polymer P intrinsically gives rise to a very efficient phosphorescence with fast radiative decay. Remarkably, a simple single-step method was also established for the synthesis of platinum egermanium (PtGe) alloy nanoparticles using P1 as the polymer precursor and the resulting ceramic metal alloys have been characterized by powder X-ray diffraction, energy dispersive X-ray analysis and transmission electron microscopy.

KW - Acetylide

KW - Germanium

KW - Nanoparticles

KW - Phosphorescence

KW - Platinum

UR - http://www.scopus.com/inward/record.url?scp=84884531809&partnerID=8YFLogxK

U2 - 10.1016/j.jorganchem.2013.06.027

DO - 10.1016/j.jorganchem.2013.06.027

M3 - Journal article

AN - SCOPUS:84884531809

SN - 0022-328X

VL - 744

SP - 165

EP - 171

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

ER -

Synthesis, photophysics and pyrolytic ceramization of a platinum(II)-containing poly(germylacetylene) polymer

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