Nonlinear luminescence spectroscopy in a Pt:ethynyl compound

McKay, T. J.; Staromlynska, J.; Wilson, Peter; Davy, Julianne

doi:10.1063/1.369264

Cited by 63 publications

(74 citation statements)

References 8 publications

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“…Emission spectra of the hybrid glass 1b were acquired using a ms flashlamp as excitation. This experiment revealed emissions in accord with that of 1a in solution, [5,13,[15][16][17]27] in the region of 400-450 nm and 500-600 nm, as expected for fluorescence and phosphorescence, respectively (Fig. 8).…”

Section: Spectroscopic and Opl Characterization Of Hybrid Materialssupporting

confidence: 53%

Preparation of Functional Hybrid Glass Material from Platinum (II) Complexes for Broadband Nonlinear Absorption of Light

Zieba

Desroches

Chaput

et al. 2009

Adv Funct Materials

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The synthesis of trans‐di(arylalkynyl)diphosphine platinum(II) complexes bearing trialkoxysilane groups is described, as well as the preparation of siloxane‐based hybrid materials from organometallic chromophores through a modified sol–gel process. Glass materials prepared from trans‐[P(n–Bu)3]2Pt[(C≡C–p–C6H4–C≡C–p–C6H4–CH2O(CO)NH(CH2)3Si(OC2H5)3]2 generally show spectral transmittance, absorption and luminescence similar to that of solutions reported in the literature. Measurements of optical power limiting for the hybrid glass are carried out, and show broadband nonlinear absorption throughout the whole visible wavelength range with clamping values in the range 0.2–7 µJ at 120 mM chromophore concentration. The sol–gel process using urethane‐propyltriethoxysilane‐functionalized chromophores as precursors appears to be a valid method for formation of robust silicate materials with grafted diarylethynyl Pt(II) complexes for OPL devices.

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Section: Spectroscopic and Opl Characterization Of Hybrid Materialssupporting

confidence: 53%

Preparation of Functional Hybrid Glass Material from Platinum (II) Complexes for Broadband Nonlinear Absorption of Light

Zieba

Desroches

Chaput

et al. 2009

Adv Funct Materials

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“…McKay et al [38,51] have assigned the 520 nm emission of the platinum(II)ethynyl molecule (R ¼ H, Fig. 1) in the THF solvent to the phosphorescent T 1 -S 0 transition.…”

Section: Article In Pressmentioning

confidence: 99%

Electronic states and phosphorescence of dendron functionalized platinum(II) acetylides

Lindgren

Minaev

Glimsdal

et al. 2007

Journal of Luminescence

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“…This is expected since the dominant OPL mechanism of PE2 at 600 nm is 2PA. 85 The ability of 2PA to enhance RSA is well known. 17,19 Further improving the quantum yield of intersystem crossing from 92% did not improve OPL performance in any meaningful way.…”

Section: Model Results and Discussionmentioning

confidence: 99%

How to assess good candidate molecules for self-activated optical power limiting

et al. 2018

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Abstract. Reverse saturable absorbers have shown great potential to attenuate laser radiation. Good candidate molecules and various particles have successfully been incorporated into different glass matrices, enabling the creation of self-activated filters against damaging laser radiation. Although the performance of such filters has been impressive, work is still ongoing to improve the performance in a wider range of wavelengths and pulse widths. The purpose of this tutorial is, from an optical engineering perspective, to give an understanding of the strengths and weaknesses of this class of smart materials, how relevant photophysical parameters are measured and influence system performance and comment on the pitfalls in experimental evaluation of materials. A numerical population model in combination with simple physical formulas is used to demonstrate system behavior from a performance standpoint. Geometrical reasoning shows the advantage of reverse saturable absorption over nonlinear scattering due to a fraction of scattered light being recollected by imaging system optics. The numerical population model illustrates the importance of the optical power limiting performance during the leading edge of a nanosecond pulse, which is most strongly influenced by changes in the two-photon absorption cross section and the triplet linear absorption cross section for a modeled Pt-acetylide. This tutorial not only targets optical engineers evaluating reverse saturable absorbing materials but also aims to assist researchers with a chemistry background working on optical power limiting materials. We also present photophysical data for a series of coumarins that can be useful for the determination of quantum yields and two-photon cross sections and show examples of characterization of molecules with excited triplet states.

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Nonlinear luminescence spectroscopy in a Pt:ethynyl compound

Cited by 63 publications

References 8 publications

Preparation of Functional Hybrid Glass Material from Platinum (II) Complexes for Broadband Nonlinear Absorption of Light

Preparation of Functional Hybrid Glass Material from Platinum (II) Complexes for Broadband Nonlinear Absorption of Light

Electronic states and phosphorescence of dendron functionalized platinum(II) acetylides

How to assess good candidate molecules for self-activated optical power limiting

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