Resonance Raman investigation of the MLCT transition in [Pt(dppm)2(PhC≡C)2] and the MMLCT transition in [Pt2(μ-dppm)2(μ-PhC≡C)(PhC≡C) 2]

Wai Ming Kwok; David Lee Phillips; Phyllis Kok Yan Yeung; Vivian Wing Wah Yam

Resonance Raman investigation of the MLCT transition in [Pt(dppm)₂(PhC≡C)₂] and the MMLCT transition in [Pt₂(μ-dppm)₂(μ-PhC≡C)(PhC≡C) ₂]

Wai Ming Kwok
, David Lee Phillips
, Phyllis Kok Yan Yeung
, Vivian Wing Wah Yam

Research output: Journal article publication › Journal article › Academic research › peer-review

Abstract

We report resonance Raman spectra including absolute Raman cross section measurements obtained with excitation wavelengths within the MLCT absorption band of [Pt(dppm)2(PhC≡C)2] and the MMLCT absorption band of [Pt2(μ-dppm)2(μ-PhC≡C)(PhC≡C) 2]+. We have simultaneously simulated the absolute absorption and resonance Raman intensities in order to estimate the vibrational reorganizational energies associated with the MLCT and MMLCT transitions. We observe a small amount of fluorescence background underneath the resonance Raman spectra of [Pt(dppm)2(PhC≡C)2] which we attribute to emission from the very shortlived initially excited MLCT state. Our quantum yield measurements of this fluorescence yields an excited state lifetime of approximately 80-130 fs.

Original language	English
Pages (from-to)	9286-9295
Number of pages	10
Journal	Journal of Physical Chemistry A
Volume	101
Issue number	49
Publication status	Published - 4 Dec 1997
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

Cite this

@article{b986c47f13a442238751bb065310e893,

title = "Resonance Raman investigation of the MLCT transition in [Pt(dppm)2(PhC≡C)2] and the MMLCT transition in [Pt2(μ-dppm)2(μ-PhC≡C)(PhC≡C) 2]",

abstract = "We report resonance Raman spectra including absolute Raman cross section measurements obtained with excitation wavelengths within the MLCT absorption band of [Pt(dppm)2(PhC≡C)2] and the MMLCT absorption band of [Pt2(μ-dppm)2(μ-PhC≡C)(PhC≡C) 2]+. We have simultaneously simulated the absolute absorption and resonance Raman intensities in order to estimate the vibrational reorganizational energies associated with the MLCT and MMLCT transitions. We observe a small amount of fluorescence background underneath the resonance Raman spectra of [Pt(dppm)2(PhC≡C)2] which we attribute to emission from the very shortlived initially excited MLCT state. Our quantum yield measurements of this fluorescence yields an excited state lifetime of approximately 80-130 fs.",

author = "Kwok, \{Wai Ming\} and Phillips, \{David Lee\} and Yeung, \{Phyllis Kok Yan\} and Yam, \{Vivian Wing Wah\}",

year = "1997",

month = dec,

day = "4",

language = "English",

volume = "101",

pages = "9286--9295",

journal = "Journal of Physical Chemistry A",

issn = "1089-5639",

publisher = "American Chemical Society",

number = "49",

}

Resonance Raman investigation of the MLCT transition in [Pt(dppm)₂(PhC≡C)₂] and the MMLCT transition in [Pt₂(μ-dppm)₂(μ-PhC≡C)(PhC≡C) ₂]. / Kwok, Wai Ming; Phillips, David Lee; Yeung, Phyllis Kok Yan et al.
In: Journal of Physical Chemistry A, Vol. 101, No. 49, 04.12.1997, p. 9286-9295.

Research output: Journal article publication › Journal article › Academic research › peer-review

TY - JOUR

T1 - Resonance Raman investigation of the MLCT transition in [Pt(dppm)2(PhC≡C)2] and the MMLCT transition in [Pt2(μ-dppm)2(μ-PhC≡C)(PhC≡C) 2]

AU - Kwok, Wai Ming

AU - Phillips, David Lee

AU - Yeung, Phyllis Kok Yan

AU - Yam, Vivian Wing Wah

PY - 1997/12/4

Y1 - 1997/12/4

N2 - We report resonance Raman spectra including absolute Raman cross section measurements obtained with excitation wavelengths within the MLCT absorption band of [Pt(dppm)2(PhC≡C)2] and the MMLCT absorption band of [Pt2(μ-dppm)2(μ-PhC≡C)(PhC≡C) 2]+. We have simultaneously simulated the absolute absorption and resonance Raman intensities in order to estimate the vibrational reorganizational energies associated with the MLCT and MMLCT transitions. We observe a small amount of fluorescence background underneath the resonance Raman spectra of [Pt(dppm)2(PhC≡C)2] which we attribute to emission from the very shortlived initially excited MLCT state. Our quantum yield measurements of this fluorescence yields an excited state lifetime of approximately 80-130 fs.

AB - We report resonance Raman spectra including absolute Raman cross section measurements obtained with excitation wavelengths within the MLCT absorption band of [Pt(dppm)2(PhC≡C)2] and the MMLCT absorption band of [Pt2(μ-dppm)2(μ-PhC≡C)(PhC≡C) 2]+. We have simultaneously simulated the absolute absorption and resonance Raman intensities in order to estimate the vibrational reorganizational energies associated with the MLCT and MMLCT transitions. We observe a small amount of fluorescence background underneath the resonance Raman spectra of [Pt(dppm)2(PhC≡C)2] which we attribute to emission from the very shortlived initially excited MLCT state. Our quantum yield measurements of this fluorescence yields an excited state lifetime of approximately 80-130 fs.

UR - https://www.scopus.com/pages/publications/0031553329

M3 - Journal article

SN - 1089-5639

VL - 101

SP - 9286

EP - 9295

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

IS - 49

ER -

Resonance Raman investigation of the MLCT transition in [Pt(dppm)₂(PhC≡C)₂] and the MMLCT transition in [Pt₂(μ-dppm)₂(μ-PhC≡C)(PhC≡C) ₂]

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this