Anomalous Surfactant-Induced Enhancement of Luminescence Quantum Yield of Cyanine Dye J-Aggregates

Guralchuk, G. Ya.; Katrunov, I. K.; Grynyov, Roman; Sorokin, A. V.; Yefimova, Svetlana; Borovoy, I. A.; Malyukin, Yu. V.

doi:10.1021/jp802933n

Cited by 60 publications

(70 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result confirms the idea of Drabold et al [4] of the manipulation of optical properties of dielectric nanoclusters through the exciton-lattice interaction. The result obtained can be spread out on other types of a J-aggregate with regard for data from [9,10]. Indeed, the CPB shell formation around J-aggregates of three different cyanine dues at room temperature results in an increase in both the exciton delocalization length and the luminescence quantum yield [9].…”

Section: Resultsmentioning

confidence: 86%

“…The result obtained can be spread out on other types of a J-aggregate with regard for data from [9,10]. Indeed, the CPB shell formation around J-aggregates of three different cyanine dues at room temperature results in an increase in both the exciton delocalization length and the luminescence quantum yield [9]. Simultaneously, this leads to the steeper Urbach edges of J-bands pointing to the ELI weakening [10].…”

Section: Resultsmentioning

confidence: 97%

“…However, one of the reasons that inhibit wide applications of J-aggregates is a low quantum yield of their luminescence [9]. Recently, we have revealed that the cationic surfactant CPB added to a J-aggregate solution can increase the luminescence quantum yield of J-aggregates of several cyanine dyes by up to 15 times [9].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we have revealed that the cationic surfactant CPB added to a J-aggregate solution can increase the luminescence quantum yield of J-aggregates of several cyanine dyes by up to 15 times [9]. It has been suggested that CPB forms a molecular shell around J-aggregates, though the microscopic nature of the ''J-aggregate-surfactant'' complex is still not clear.…”

Section: Introductionmentioning

confidence: 99%

“…It has been suggested that CPB forms a molecular shell around J-aggregates, though the microscopic nature of the ''J-aggregate-surfactant'' complex is still not clear. To explain the significant luminescence quantum yield enhancement, it has been proposed that the surfactant shell formation results in suppressing the exciton self-trapping (ST) in J-aggregates [9,10]. As the exciton ST is caused by the strong ELI (the exciton-lattice interaction in such a case) [11], it was one of the first evidences of the control over luminescence properties of J-aggregates via changing the ELI.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Manifestation of Exciton-Lattice Interaction in J-Aggregates

Katrunov

Sorokin

Yefimova

et al. 2011

Molecular Crystals and Liquid Crystals

View full text Add to dashboard Cite

The inverse correlation between the exciton-lattice interaction strength and the exciton delocalization length is shown for dielectric organic nanoclusters -J-aggregates. Since the exciton delocalization length defines all optical properties of J-aggregates, it allows one to control them via the exciton-lattice interaction. We demonstrate the exciton self-trapping suppression in amphi-PIC J-aggregates as a result of the exciton-lattice interaction weakening due to the formation of a surfactant shell around J-aggregates. The control over optical properties via the exciton-lattice interaction for other types of J-aggregates is discussed.

show abstract

Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Manifestation of Exciton-Lattice Interaction in J-Aggregates

Katrunov

Sorokin

Yefimova

et al. 2011

Molecular Crystals and Liquid Crystals

View full text Add to dashboard Cite

show abstract

Polymer‐Bound Supramolecular J‐Aggregates: Optical Properties and Applications

Sorokin

Yefimova

Malyukin

2018

Encyclopedia of Polymer Science and Technology

View full text Add to dashboard Cite

Luminescent molecular aggregates, called J‐aggregates, are an interesting example of supramolecular structures with a number of unique spectral properties. Their optical properties are governed by the excitonic nature resulting from high‐order molecular packing in the J‐aggregate chains. The J‐aggregate characteristic feature is the bathochromically shifted narrow excitonic band termed the J‐band. The optical properties of J‐aggregates are markedly distinct from those of the individual molecules forming the aggregate, namely narrow absorption band, high oscillator strength, giant third‐order susceptibility, resonant luminescence, and effective exciton diffusion. Although solutions of J‐aggregates often possess low photostability for practical usage, their solid samples are more convenient, especially different polymer films due to their ease of preparation and availability of application. J‐aggregate formation in polymer films has both advantages and disadvantages: Some spectral characteristics could degrade, whereas composites creation could modify and improve their optical properties. This article aims to demonstrate how the interaction of J‐aggregates with polymers in both solution and solid film state affects their spectral properties. In addition, examples of composites and devices based on polymer‐bound J‐aggregates are discussed.

show abstract

Near‐Unity Superradiant Emission from Delocalized Frenkel Excitons in a Two‐Dimensional Supramolecular Assembly

Barotov

Arachchi

Klein

et al. 2022

Advanced Optical Materials

View full text Add to dashboard Cite

ordered molecules in a wide variety of morphologies, such as fibers, sheets, and nanotubes. [1,2] Since their independent discovery by Jelley and Scheibe in 1936, [3,4] there has been keen interest in understanding supramolecular assemblies for their unique exciton properties which are distinctly different from those of the single constituting molecules. Close and highly ordered packing allows strong long-range excitonic interaction between the chromophores, resulting in optical properties that strongly depend on the precise alignment of transition dipole moments in the aggregate. In particular, the head-to-tail arrangement of transition dipole moments in J-aggregates leads to the formation of new molecular excitons with redshifted and narrowed spectra. [5] As in natural lightharvesting complexes, molecular excitons in supramolecular assemblies, also called Frenkel excitons, are delocalized over several chromophores in the aggregates. At low temperatures, exciton delocalization lengths of up to 200 molecules have been observed. [6,7] The collective nature of excitations in supramolecular assemblies is responsible for their unique optical properties, such as remarkably narrow and intense absorption, long-range exciton transport, and short radiative lifetimes.As a result of coherent exciton coupling, the oscillator strength for certain excitonic transitions in J-aggregates increases nonlinearly with the number of coupled molecules, leading to strong absorption. In fact, J-aggregates are some of the strongest absorbers known, with measured absorption constants as high as 10 6 cm −1 and absorption strengths reaching 30% at their resonance wavelengths even for a single monolayer. [8,9] Because of their absorption and transport properties, J-aggregates have been widely used as spectral sensitizers in the photographic film industry. [1,2,10] Coherent exciton coupling also leads to a cooperative emission, known as superradiance, which occurs at much faster timescales since the radiative rate is proportional to the oscillator strength. [1,11,12] Even at room temperature, radiative lifetimes as low as 27 ps have been observed for high-quality 2D monolayers of perylene bisimide J-aggregates in the solid state. [9] Because of their strong absorption and superradiant emission, molecular J-aggregates hold great promise towards efficient high-speed light sources, which are important for many applications including high-speed Three general effective strategies are shown to mitigate nonradiative losses in the superradiant emission from supramolecular assemblies. J-aggregates of 5,5′,6,6′-tetrachloro-1,1′-diethyl-3,3′-di(4-sulfobutyl)-benzimidazolocarbocyanine (TDBC) are used to elucidate the nature of nonradiative processes. Selfannealing at room temperature (RT), photo-brightening, and purification of the dye monomers are shown to all lead to substantial increases in emission quantum yields (QYs) and a concomitant lengthening of the emission lifetime, with purification having the largest effect. Structural and optical measuremen...

show abstract

Anomalous Surfactant-Induced Enhancement of Luminescence Quantum Yield of Cyanine Dye J-Aggregates

Cited by 60 publications

References 51 publications

Manifestation of Exciton-Lattice Interaction in J-Aggregates

Manifestation of Exciton-Lattice Interaction in J-Aggregates

Polymer‐Bound Supramolecular J‐Aggregates: Optical Properties and Applications

Near‐Unity Superradiant Emission from Delocalized Frenkel Excitons in a Two‐Dimensional Supramolecular Assembly

Contact Info

Product

Resources

About