The formation of mixed J aggregates of cyanine dyes in Langmuir-Blodgett monolayers

Penner, Thomas L.; Möbius, Dietmar

doi:10.1016/0040-6090(85)90469-9

Cited by 34 publications

(17 citation statements)

References 17 publications

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“…Currently, theoretical descriptions of spectral data are mostly based on rather simple structure models [16,17,[26][27][28]. One possibility to obtain more information about structural details is to investigate the aggregation behaviour of mixtures of different dye molecules, a method that was successfully applied in monolayer assemblies [29][30][31][32]. The interest in such mixed aggregates arises from the prospect to fine-tune their spectral properties for technical applications [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

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Mixtures of achiral amphiphilic cyanine dyes form helical tubular J-aggregates

et al. 2011

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Section: Introductionmentioning

confidence: 99%

“…Mixed aggregates were intensively studied for two-dimensional monolayer assemblies prepared on a Langmuir trough [29][30][31][32]. For those systems the fine-tuning of optical spectra due to structure tuning was unambiguously proven.…”

Section: Introductionmentioning

confidence: 99%

Mixtures of achiral amphiphilic cyanine dyes form helical tubular J-aggregates

et al. 2011

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“…One extreme situation is homogeneous mixing of two components in which either a single amalgamated J-band appears (HA-aggregate) or two J-bands persist (HP-aggregate). An actual example of the HA-aggregate in LB films has been first reported by Penner and Möbius [7]. Recently, a number of the HA-aggregates have been observed by our group [5,6,8] and by Knoester's group [9].…”

Section: Introductionmentioning

confidence: 83%

“…Octadecane (OD), arachidic acid (AA) and arachidic methyl ester (AME) were used as received. The preparation and transfer of the mixed monolayers; S9(J) + S11(M) : OD = 1 :1 with molar ratio S9 : S11 : OD = (1 -x):x:1 were carried out in a conventional manner [7,8]. As the reference films, the LB fims incorporating S9(M) or S11(M) with molar ratio, dye: AME : AA = 1 :10 :90, were prepared.…”

Section: Methodsmentioning

confidence: 99%

Exciton delocalization of the J‐aggregate of oxacyanine dye and thiacyanine dye in LB films

Yonezawa

Yamaguchi

Kometani

2005

Physica Status Solidi (b)

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Delocalization and energy transfer of the molecular exciton of the J-aggregate of oxacyanine dye, N,N′-dioctadecyl-oxacyanine perchlorate (S9) in LB films have been examined. Fluorescence lifetime of the S9 J-aggregate (S9(J)) appears to be ca. 1/20 of the isolated S9 molecules (S9(M)), which suggests that the coherent size of the J-aggregate, N cohe , is about 22 at room temperature. Quenching of resonance fluorescence of S9(J) by thiacyanine dye, N,N′-dioctadecyl-thiacyanine perchlorate (S11) obeys the SternVolmer relation with a Stern-Volmer constant of 1.2 × 10 3 nm 2 molecules -1 at room temperature, which is responsible to the incoherent size N inco of about 2000. The rate constant of energy transfer k ET amounts to 1.5 × 10 13 nm 2 molecules -1 s -1 .

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“…The position of the J-band is controlled by the mixing of two types of molecules 13 . J-aggregates in LB films show femtosecond optical response times 14 , and multiple wavelength optical recording can be achieved by using two types of Jaggregates 15 .…”

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confidence: 99%