Lasing characteristics of Rhodamine B and Rhodamine 6G as a sensitizer in sol–gel silica

Khader, Mohamed A.

doi:10.1016/j.optlastec.2007.07.008

Cited by 13 publications

(5 citation statements)

References 59 publications

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“…Because the caging effect reduces the non-radiative decay of RhB ( Zhang et al., 2020 ; Mieno et al., 2016 ; Cui et al., 2012 ) and the introduction of PVDF significantly decreases the self-absorption of well-dispersed RhB@ZIF-71 nanocrystals (ascribed to the overlapping excitation-emission phenomenon, see Figure 1 D), we found that the fibers obtained under the conditions of 1 wt.% and 8 μL/min achieve a QY of ∼92% (versus QY ∼25% in the corresponding bulk powder sample). This value of QY is the highest yet among the MOF-polymer systems reported to date ( Zhang et al., 2007 ; Bai et al., 2018 ) and when compared against the RhB-based fluorescent materials whose QYs are commonly lying in the relatively lower bound of 30–60% ( Table S5 ) ( Ahmed and Saif, 2013 ; Khader, 2008 ; Sagoo and Jockusch, 2011 ; Stobiecka and Hepel, 2011 ). Our findings reveal that this high QY fiber can be a promising candidate for optoelectronics and sensing.…”

Section: Resultsmentioning

confidence: 85%

Electrospun rhodamine@MOF/polymer luminescent fibers with a quantum yield of over 90%

Zhang

Tan

2021

iScience

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Summary Tailored luminescent guest@metal-organic framework (Guest@MOF) materials with outstanding photophysical properties are enabling materials for emergent technologies in smart sensors and optoelectronics. However, the practical utility of Guest@MOF currently is impaired by its poor stability and difficult-to-handle powder form. Here, we combine a luminescent-sensing Guest@MOF system with a non-luminescent polymer matrix and, for the first time, demonstrated the easy-to-apply electrospinning of luminescent fibers comprising nanocrystals of RhB@ZIF-71 (rhodamine B@zeolitic imidazolate framework-71) homogeneously dispersed in a polyvinylidene difluoride (PVDF) matrix. The luminescence of RhB@ZIF-71/PVDF fiber is tunable and exhibits a quantum yield exceeding 90%. Compared with RhB fluorophore in PVDF fiber, the ZIF-71 (host) protects the nanoconfined RhB guest molecules (especially the J-aggregates of RhB), giving the composite fiber its unique thermofluorochromic response and enhanced thermal stability to 200°C. Our results reveal the exciting opportunities for implementing electrospun luminescent fibers functionalized with bespoke Guest@MOF nanocrystals for multifunctional device applications.

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Section: Resultsmentioning

confidence: 85%

Electrospun rhodamine@MOF/polymer luminescent fibers with a quantum yield of over 90%

Zhang

Tan

2021

iScience

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“…Because organic dyes in the visible light region has strong absorption , wavelengths produced by dye laser device are tunable. To date, thousands of organic dyes such as Rhodamine dyes have been used in dye laser devices which have been widely used in biology, spectroscopy, photochemistry, photodynamic and optical communications [1][2][3] .…”

Section: Dye Applications In Materials Sciencementioning

confidence: 99%

Applications of Dyes in Material Science Research

Cao

Zhao

2008

MSF

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Dyes are colored organic compounds that are used to pigment fiber or other materials. Dyes are mainly calssified into natural and synthetic dyes in terms of the origin. Natural dyes include animal dyes, plant dyes and mineral dyes with such defects as incomplete chromatogram, inconvenient use and color fading, and thus have been gradually eliminated. In 1856, the 18-year-old young British scientist Perkin successfully invented the world's first synthetic dyes. He built his own factory and industrialized synthetic dye production. Over 100 years since then, dye industry has undergone rapid development, and by 2001 synthetic dyes already have been up to nearly 10,000 varieties. In 2004, the output of total dyes in the world has reached 900,000 tons. Synthetic dyes are used comprehensively, not only to dye synthetic fibers, but also natural fibesr, fur, leather and man-made fibers.

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“…Generally, inorganic glass material prepared by the sol-gel technique has been proven to be the most promising host material for laser dye [48][49][50][51][52] because of its excellent properties like high transparency, porous nature, good compatibility with dopant molecules, highest laser damage threshold compared to polymer and composite glasses, and low processing temperature [53][54][55][56]. The low processing temperature of this technique makes the task of dye doping easier and protects them from thermal degradation, which is impossible with the conventional method of glass preparation.…”

Section: Introductionmentioning

confidence: 99%

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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Lasing characteristics of Rhodamine B and Rhodamine 6G as a sensitizer in sol–gel silica

Cited by 13 publications

References 59 publications

Electrospun rhodamine@MOF/polymer luminescent fibers with a quantum yield of over 90%

Electrospun rhodamine@MOF/polymer luminescent fibers with a quantum yield of over 90%

Applications of Dyes in Material Science Research

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

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