Spectroscopic investigation on the effect of pairing anions in imidazolium-based ionic liquids on the J-aggregation of meso-tetrakis-(4-sulfonatophenyl)porphyrin in aqueous solution

Liu, Huan; Weijun, Jin; Xi, Lei; Dong, Zhongjie

doi:10.1016/j.jlumin.2011.05.052

Cited by 10 publications

(5 citation statements)

References 28 publications

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“…The peaks at 487 and 701 nm belong to J-aggregates in the water-rich environment. The result coincides with the literature [41]. The shift of the peaks above may be due to the change of the solvent environment.…”

Section: Absorbance Of Tpps In Acidic Bmimbf 4 and Emimbf 4 In The Prsupporting

confidence: 92%

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Investigation on the effect of water on the spectroscopic behaviors of TPPS in acidic imidazolium-based ionic liquids

Liu

Zhao

Jin

2012

J. Porphyrins Phthalocyanines

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The effect of water on the spectroscopic behaviors of meso-tetrakis-(4-sulfonatophenyl) porphyrin (TPPS) in acidic 1-butyl-3-methylimidazolium tetrafluoroborate (BMIMBF 4 ) and 1-ethyl-3methylimidazolium tetrafluoroborate (EMIMBF 4 ) is investigated by spectroscopic methods. In acidic ionic liquids without water, the Soret bands of the protonated form (H 4 TPPS 2-) and J-aggregates of TPPS are centered at 449 and 469 nm, respectively, and the Q-band is centered at 679 nm. When increasing the content of water, the Soret band of H 4 TPPS 2is blue-shifted to 430 nm. However, the Soret and Q-bands of J-aggregates are red-shifted to 487 and 701 nm, respectively. The NMR and pyrene-scale polarity experiments reveal that the change of the bulk environment is responsible for the red-shift of J-aggregates and the blue-shift of H 4 TPPS 2-. According to the analysis of the fluorescence spectra, the content of H 4 TPPS 2increases gradually with the addition of water, while the content of H 2 TPPS 4takes the opposite trend. Simultaneously, the content of J-aggregates decreases substantially when the addition of water is 0 ~ ca. 12 mL (or 13 mL) but it decreases slowly with further addition of water. Remarkably, the fluorescence intensity of J-aggregates is relatively strong. In addition, the fluorescence of J-aggregates can be detected when λ ex is set at both λ ex for TPPS monomers and λ ex for J-aggregates. While the fluorescence of TPPS monomers can be detected only when λ ex is set at λ ex for monomers. Moreover, with the addition of water, the fluorescence lifetimes of H 2 TPPS 4and H 4 TPPS 2increase from 3.202 and 0.830 ns to 9.623 and 2.964 ns, respectively.

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Section: Absorbance Of Tpps In Acidic Bmimbf 4 and Emimbf 4 In The Prsupporting

confidence: 92%

“…The J-aggregation of TPPS is promoted by the imidazolium-based ionic liquids with BF 4 as the anion through charge equilibrium. However, the ionic liquids with TSas the anion inhibit the J-aggregation of TPPS by hydrophobic and π-π interactions [40,41].…”

Section: Investigation On the Effect Of Water On The Spectroscopic Bementioning

confidence: 99%

Investigation on the effect of water on the spectroscopic behaviors of TPPS in acidic imidazolium-based ionic liquids

Liu

Zhao

Jin

2012

J. Porphyrins Phthalocyanines

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“…Additionally, they were utilized in the production of singlet oxygen and photosensitizer [10][11][12]. The synthesized mesotetrakis (4-sulfonatophenyl) porphyrin is one of the most significant water-soluble porphyrin derivatives (TPPS) [13]. In clinical trials, TPPS was examined and experimented with as a promising sensitizer for PDT [14].…”

Section: Introductionmentioning

confidence: 99%

Fluorescence quenching, DFT, NBO, and TD-DFT calculations on 1, 4-bis [2-benzothiazolyl vinyl] benzene (BVB) and meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS) in the presence of silver nanoparticles

et al. 2022

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Steady-state fluorescence measurements were used to examine the fluorescence quenching of 1, 4-bis [-(2-benzothiazolyl) vinyl benzene (BVB) by sodium salt of meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS) in the presence and absence of silver nanoparticles (Ag NPs). The energy transfer (ET) process’s emission intensities and Stern–Volmer constants (KSV) showed that Ag NP’s presence increased ET’s efficiency. The molecular structures of TPPS, TPPS, and BVB/TPPS were optimized using the DFT/B3LYP/6-311G (d) technique to elucidate the mechanism. The discovered optimized molecular structure proved that whereas TPPS and BVB/TPPS MSs are not planar because the porphyrin group in TPPS is rotated out by phenyl sodium sulphate, the BVB MS is planer. All of the theoretical BVB results and the acquired experimental optical results were very similar.

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“…Their high optical (NL) arise from their geometrical structures existing extended π-conjugated systems [8,9]. Water-soluble PPs and metalloporphyrin have a lot of potential applications in bioscience [10][11][12][13]), and material science [14][15][16]. Also, in medicine, water-soluble PPs investigated anti-HIV [17] and antibacterial activity [18], and it was utilized as active compounds for singlet oxygen imaging of single cells [19] and singlet oxygen photosensitization in skin fibroblasts [20].…”

Section: Introductionmentioning

confidence: 99%

“…Also, in medicine, water-soluble PPs investigated anti-HIV [ 17 ] and antibacterial activity [ 18 ], and it was utilized as active compounds for singlet oxygen imaging of single cells [ 19 ] and singlet oxygen photosensitization in skin fibroblasts [ 20 ]. One of the most significant water-soluble PP derivatives is the synthetic meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS) [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Surface of Metallic Gold and Silver Nanoparticles Induced Fluorescence Quenching of Meso-Terakis (4-Sulfonatophenyl) Porphyrin (TPPS) and Theoretical–Experimental Comparable

et al. 2022

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Colloidal metallic nanoparticles have attracted a lot of interest in the last two decades owing to their simple synthesis and fascinating optical properties. In this manuscript, a study of the effect of both gold nanoparticles (Au NPs) and silver nanoparticles (Ag NPs) on the fluorescence emission (FE) of TPPS has been investigated utilizing steady-state fluorescence spectroscopy and UV–Vis spectrophotometry. From the observed electronic absorption spectra, there is no evidence of the ground state interaction between metallic Au NPs or Ag NPs with TPPS. On the other side, the FE spectra of TPPS have been quenched by both Ag and Au NPs. Via applying quenching calculations, Ag NPs showed only traditional static fluorescence quenching of TPPS with linear Stern–Volmer (SV) plots. On the contrary, quenching of TPPS emission by Au NPs shows composed models. One model is the sphere of action static quenching model that prevails at high quencher concentrations leading to non-linear SV plots with positive deviation. However, at low Au NPs concentrations, traditional dynamic quenching occurs with linear SV plots. The quantum calculations for TPPS structure have been obtained using Gaussian 09 software: in which the TPPS optimized molecular structure was achieved using DFT/B3LYP/6-311G (d) in a gaseous state. Also, the calculated electronic absorption spectra for the same molecule in water as a solvent are obtained using TD/M06/6-311G + + (2d, 2p). Furthermore, the theoretical and experimental results comparable to UV–Vis spectra have been investigated.

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Spectroscopic investigation on the effect of pairing anions in imidazolium-based ionic liquids on the J-aggregation of meso-tetrakis-(4-sulfonatophenyl)porphyrin in aqueous solution

Cited by 10 publications

References 28 publications

Investigation on the effect of water on the spectroscopic behaviors of TPPS in acidic imidazolium-based ionic liquids

Investigation on the effect of water on the spectroscopic behaviors of TPPS in acidic imidazolium-based ionic liquids

Fluorescence quenching, DFT, NBO, and TD-DFT calculations on 1, 4-bis [2-benzothiazolyl vinyl] benzene (BVB) and meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS) in the presence of silver nanoparticles

Plasmonic Surface of Metallic Gold and Silver Nanoparticles Induced Fluorescence Quenching of Meso-Terakis (4-Sulfonatophenyl) Porphyrin (TPPS) and Theoretical–Experimental Comparable

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