A Concept for Molecular Addressing by Means of Far-reaching Electromagnetic Interactions in the Visible

Langhals, Heinz

doi:10.4172/2332-0796.1000215

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…(10) is estimated to be a molecular property and thus, independent from the chemical concentration of highly diluted solutions of isolated molecules. In contrast to the theory, a fluorescence lifetime of 5 ns is found for an already diluted 2•10 −5 molar solution where the lifetime is diminished to 3.8 ns by further dilution to 1•10 −7 molar [30]; see Figure 6. This unexpected result may be interpreted in terms of evanescent waves [31] and the tunnelling where the evanescent waves were reflected by the other identical not electronically excited chromophores thus, retarding the tunnelling.…”

Section: Fluorescencecontrasting

confidence: 72%

Fluorescence and fluorescent dyes

Langhals

2020

Physical Sciences Reviews

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The handling and control of light is becoming more and more attractive in science and technology such as data processing and requires functional chromophores. As a consequence, fluorescent materials are of special importance because they allow the processing of light energy. Thus, basics of fluorescence are reported as prerequisites for planning complex functional structures. Various fluorescent systems are presented beginning with historic observations followed by a detailed discussion of light absorption and emission indicating fluorescent chromophores as molecular resonators; molecular dynamics and intermolecular interactions are leading to complex functional materials.

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Section: Fluorescencecontrasting

confidence: 72%

Fluorescence and fluorescent dyes

Langhals

2020

Physical Sciences Reviews

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Dependence of the Fluorescent Lifetime τ on the Concentration at High Dilution

Langhals

Schlücker

2022

J. Phys. Chem. Lett.

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Long-range interactions between electronically excited molecules and molecules at the ground state were found for distances of much more than 100 nm, as indicated by the dependence of the fluorescence lifetime on the concentration of dyes in diluted solutions. In contrast to this experimental result, the fluorescence lifetimes of distant isolated molecules should be independent from the concentration according to basic theory for light emission, such as that reported by Forster and Strickler−Berg. As a consequence, the theory of such emission should be modified for real systems to include electromagnetic interactions with distant resonating structures. Consequences of these findings concern many subjects, such as imaging methods (FLIM) in biochemistry.

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Functional Organo-Nano Particles by RAFT Copolymerisation

Langhals¹

2018

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A Concept for Molecular Addressing by Means of Far-reaching Electromagnetic Interactions in the Visible

Cited by 3 publications

References 14 publications

Fluorescence and fluorescent dyes

Fluorescence and fluorescent dyes

Dependence of the Fluorescent Lifetime τ on the Concentration at High Dilution

Functional Organo-Nano Particles by RAFT Copolymerisation

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