Fluorescence properties of fluorescein and rhodamine supported on alumina nanowire films

Li, Fenglin; Wang, Xixin; Zhu, Ming‐Qiang; Liu, Dongxin; Liu, Dong; Zhao, Jianling

doi:10.1016/j.ceramint.2021.12.338

Cited by 6 publications

(6 citation statements)

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“…There is a scanty amount of data available about the light-harvesting properties of the two pairs of laser dyes, Rh-110/Rh-6G and Rh-19/Rh-B, doped in the sol-gel glasses. Recently in 2022, Rh-110/Rh-6G supported on alumina nanowire has been reported to have an E of 47.9% [34]. However, in the present study, we report a minimum of 57.38% to a maximum of 85.68% E of the same dye pair in sol-gel.…”

Section: Introductioncontrasting

confidence: 82%

“…In this study, the donor concentration is held constant in the range of 10 −5 M l −1 , and the acceptor dye concentration gradually increases until it reaches the inflection point where it is expected to be equal to the [34]. The similarity in the molecular structure and polarity favour (i) even distribution of molecules in the host and (ii) very good compatibility between D & A molecules.…”

Section: Study Of Fret In Sol-gelmentioning

confidence: 99%

“…Energy transfer between D & A dye molecules is an important mechanism used for various purposes, for example, extending the lasing wavelength [22], enhancement in tunability [23], and also increasing the power of dye lasers [24][25][26][27]. Many reports on energy transfer in organic dyes are available with a number of donoracceptor (D-A) pairs using Rhodamine-6G [28][29][30][31][32][33][34] or Rhodamine-B as an acceptor [35][36][37][38][39]. Also, more than two dyes are used in a mixture to get extensive antenna ability by using the energy transfer mechanism [9,34,[40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

“…Many reports on energy transfer in organic dyes are available with a number of donoracceptor (D-A) pairs using Rhodamine-6G [28][29][30][31][32][33][34] or Rhodamine-B as an acceptor [35][36][37][38][39]. Also, more than two dyes are used in a mixture to get extensive antenna ability by using the energy transfer mechanism [9,34,[40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

“…(ii). There are reports on the study of donor or acceptor concentration-dependent FRET and the antenna effect [15,34,40,67]. However, these reports do not reveal much information at the molecular level, occurring with increasing donor or acceptor molecule concentration.…”

Section: Introductionmentioning

confidence: 99%

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A comparative study of conventional FRET and light harvesting properties of Rh-110/Rh-6G and Rh-19/Rh-B organic dye pairs impregnated in sol-gel glasses

Mahato

Kumar

2023

Methods Appl. Fluoresc.

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Two different pairs of laser dyes, Rhodamine-110 (Rh-110)/Rhodamine-6G (Rh-6G) and Rhodamine-19 (Rh-19)/Rhodamine-B (Rh-B) (the first dye in each pair as a donor and the second as an acceptor) were impregnated in silica samples prepared by the sol-gel method and spectroscopically studied using absorption and steady-state fluorescence techniques. The critical transfer distance (R0), actual distance (r) between the donor and acceptor, overlap integral [J(ῡ)], FRET (fluorescence resonance energy transfer) efficiency (E), and antenna effect efficiency (AE) were investigated in detail based on the variation in acceptor concentration. The FRET efficiency, antenna effect efficiency, and actual donor-acceptor distance for Rh-110/Rh-6G and Rh-19/Rh-B dye pairs corresponding to acceptor concentration ranges (3.83 to 7.65)×10-5 M/L and (3.71 to 8.34)×10-5 M/L, respectively, were found to be in the ranges of 57.38% to 74.89%, 36.97% to 24.13%, 5.44 nm to 4.77 nm, and 77.01%. Furthermore, maximum FRET efficiencies of 85.68% and 87.63% and antenna effect efficiencies of 36.97% and 40.95% for Rh-110/Rh-6G and Rh-19/Rh-B, respectively, were also reported. Our results demonstrate the superior FRET efficiency of Rh-19/Rh-B over Rh-110/Rh-6G dye pair in sol-gel glasses, while the antenna effect efficiency of Rh-110/Rh-6G is higher than that of Rh-19/Rh-B for the same donor to acceptor (D/A) ratio. Finally, Rh-110/Rh-6G is a better energy harvester than the Rh-19/Rh-B dye pair at the common D/A ratio. These results are explained in terms of molecular structure similarity, polarity, and rigidity of donor and acceptor.

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Section: Introductioncontrasting

confidence: 82%

Section: Study Of Fret In Sol-gelmentioning

confidence: 99%