The aqueous-polyelectrolyte dye solution as an active laser medium

Akimov, A. I.; Салецкий, А. М.

doi:10.1070/qe2000v030n11abeh001843

Cited by 5 publications

(2 citation statements)

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“…Of particular interest is the study of micromolecular structures based on organic dyes in a polymer matrix. These systems are used as scintillators, energy converters, laser media, materials for information recording, and so on [1,2]. Changing the number and arrangement of charged segments of polyion systems, it is possible to control their structure [3] and, consequently, the processes of association of dissolved dye molecules [4] and the processes of electronic excitation energy transfer (EEET) [5,6].…”

Section: Introductionmentioning

confidence: 99%

10.1007/s11449-008-3010-9

2010

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The processes of electronic excitation energy transfer (EEET) between different-type dye molecules in polymer micellar solutions with different polyelectrolyte concentration have been analyzed. The possibility of regulating the EEET efficiency between dye molecules due to change of the structure of polymer micellar complexes has been established. The results presented are explained from the viewpoint of the fractal character of distribution of interacting particles. The experimental dependence of the fractal dimension of the distribution of dye molecules in polymer micellar solutions on the polyelectrolyte concentration has been obtained.

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Section: Introductionmentioning

confidence: 99%

10.1007/s11449-008-3010-9

2010

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“…Dependence of the relative quantum yield of fluorescence of R6G on its concentration for systems with ordered (1-3) and unordered (4, 5) arrangement of charged segments at one and the same ratio between the different-sign charges (1, 4) and at a 60% excess of positively(2,5) and negatively charged segments(3).…”

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confidence: 99%

Influence of the Microstructure of Polymer Gels on the Electron-Excitation Energy Transfer Between Organic Molecules

et al. 2005

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The electron-excitation energy transfer (EEET) between ionic dyes in polyelectrolyte-network polymers with a different space distribution of charged segments has been investigated. It has been established that the structure of network polymers influences the efficiency of the EEET in them mainly due to the formation of a fractal distribution of interacting molecules. It is shown that the efficiency of the EEET can be controlled by changing the number and arrangement of charged segments of polyelectrolyte networks.

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Absorption spectra of associates of heterogeneous dye molecules in polymer matrices

2011

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The formation processes for heterogeneous associates of cationic dyes in polyvinyl alcohol films are investigated. The influence of colorless anions on the heterogeneous association efficiency is established. The structures of heterogeneous dimers of various dyes in polymer matrixes are defined.Introduction. Polymeric laser elements that are both solutions of dyes [1] and polymeric matrices with incorporated molecules [2, 3] have recently become of great interest. The generating properties of such media are determined mainly by their spectral and luminescent characteristics. Complexes in the ground state (associates) that are associated states causing a change of the laser active medium spectral characteristics and also fluorescence quenching can be formed at high dye concentrations. The efficiency of association processes in polymeric systems with incorporated dye molecules depends on their structural organization and charges [4]. Association processes between various types of molecules (formation of heterogeneous associates) are interesting with respect to the use of multi-component luminescing systems for increasing the lasing energy and expanding the frequency range of its tuning. The interaction of only colored ions (cations) is usually examined in studies of formation processes of heterogeneous associates of dyes [5,6]. Therefore, an investigation of the influence of colorless anions on such processes is critical. Herein we report results from a study of association processes of dye molecules in polymeric matrices.Experimental. The following cationic dyes were studied: Rhodamine 6G (R6G) with various anions (Cl

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The aqueous-polyelectrolyte dye solution as an active laser medium

Cited by 5 publications

References 38 publications

10.1007/s11449-008-3010-9

10.1007/s11449-008-3010-9

Influence of the Microstructure of Polymer Gels on the Electron-Excitation Energy Transfer Between Organic Molecules

Absorption spectra of associates of heterogeneous dye molecules in polymer matrices

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