Distance dependence of plasmon-enhanced fluorescence and delayed luminescence of molecular planar nanostructures

Temirbayeva, D.; Ibrayev, N. Kh.; Кучеренко, М. Г.

doi:10.1016/j.jlumin.2021.118642

Cited by 8 publications

(13 citation statements)

References 46 publications

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“…1. Silver island films (SiFs) were prepared by magnetron sputtering, as described in [20]. After silver deposition, the films were annealed at a temperature of 240°C in a muffle furnace for 30 minutes.…”

Section: Methodsmentioning

confidence: 99%

“…Polymer monolayers were transferred to the substrate at a surface pressure of π=35 mN/m in a Ztype. It is known that a certain distance from the surface of plasmonic NPs is required to obtain the maximum effect [20,22]. Therefore, in this work, several samples were prepared with different distances from the SiF surface (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The composition and thickness of such films can be precisely controlled at the molecular level. In addition, the orientation of fluorescent probes to the metal surface is fixed and the probes are in a monolayer, which is favorable for studies of metal-enhanced processes [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Plasmon effect on triplet-singlet energy transfer in the dye-doped Langmuir-Blodgett films

Temirbayeva¹,

Ibrayev²,

Seliverstova³

et al. 2022

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The effect of silver plasmonic nanoparticles on triplet-singlet energy transfer in the donor-acceptor pair of organic dyes was studied. Layered dye films were prepared on the surface of glass and island silver films using the Langmuir-Blodgett method. Amphiphilic analogs of Rose bengal and polymethine dye were used as donor and acceptor of energy. A polymer monolayer was deposited between monolayers of donor and acceptor molecules to exclude the competing triplet-triplet energy transfer. The spectra of delayed fluorescence and phosphorescence of donor-acceptor films and the delayed luminescence lifetime of donor in these films have been measured. It is shown that a threefold increase in the fluorescence intensity and a twofold increase in the donor phosphorescence intensity are observed on silver island films. The successful triplet-singlet energy transfer is evidenced by both the quenching of donor centers and appearance of sensitized delayed fluorescence of the acceptor with the duration close to the donor triplet lifetime. In the presence of silver nanoparticles, in addition to enhancement in the intensity of the donor emission, an increase in the efficiency of tripletsinglet energy transfer was observed. The obtained results can be used in various optical devices.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Plasmon effect on triplet-singlet energy transfer in the dye-doped Langmuir-Blodgett films

Temirbayeva¹,

Ibrayev²,

Seliverstova³

et al. 2022

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show abstract

“…8,9 The radiative rate of fluorescent materials can be tuned by the localized electric field confined inside a planar microcavity. [10][11][12] Topologically engineered photonic crystal structures are efficient platforms for lasing action, wherein emission is achieved at a relatively low pump threshold. 13,14 Photonic band gap (PBG) structures are the right candidate to fabricate devices ranging from microwaves to the visible range of the electromagnetic spectrum.…”

Section: Introductionmentioning

confidence: 99%

“…8,9 The radiative rate of fluorescent materials can be tuned by the localized electric field confined inside a planar microcavity. 10–12 Topologically engineered photonic crystal structures are efficient platforms for lasing action, wherein emission is achieved at a relatively low pump threshold. 13,14…”

Section: Introductionmentioning

confidence: 99%