Chemiluminescence in oriented systems: chemiluminescence of 10,10′-dimethyl-9,9′-biacridinium nitrate in micellar media

Paleos, Constantinos M.; Vassilopoulos, G.; Nikokavouras, J.

doi:10.1016/0047-2670(82)87022-6

Cited by 64 publications

(21 citation statements)

References 26 publications

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“…7, were monitored by the spectrofluorometer with the Xe light turned off and the emitted slit width set at 20 nm. As well known, the cage structure of the micelle is helpful for stabilizing excited state luminophor to prevent it from quenching [13]. Hence, the CL signals of sulfite acidic system in the presence of SDBS could be observed as shown in Figs.2b and 7 (solid line).…”

Section: The CL Mechanism Studies Of the Present Systemmentioning

confidence: 66%

In vitro monitoring of nanogram levels of naproxen in human urine using flow injection chemiluminescence

Cheng

Zhao

Liu

et al. 2006

Analytica Chimica Acta

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Based on the synergic effect of the hydrophobicity of sodium dodecylbenzenesulfonate (SDBS) micelles and the incorporation of naproxen molecules, a simple, rapid and sensitive chemiluminescence (CL) method was described for the determination of naproxen in pharmaceuticals and urine. Under the optimum experimental conditions, the CL intensity was linear over the concentration of naproxen ranging from 1.0 to 700.0 ng mL −1 (r = 0.9917) with a detection limit as low as 0.9 ng mL −1 (S/N = 3). The mechanism of CL was discussed in detail based on the spectrometry. The experimental results demonstrated that the excretive amounts of naproxen reached its maximum in 4.0 h after taking 200 mg naproxen tablet; and the naproxen excretive ratio during 8.0 h was 5.46% in the body of volunteers.

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Section: The CL Mechanism Studies Of the Present Systemmentioning

confidence: 66%

In vitro monitoring of nanogram levels of naproxen in human urine using flow injection chemiluminescence

Cheng

Zhao

Liu

et al. 2006

Analytica Chimica Acta

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“…The chemiluminescent reactions in the solution, the hydrogel, and the lyophilized hydrogel are illustrated in Figure 2. The significant enhancement of the CL of Gel 1 + 2 A C H T U N G T R E N N U N G [3,4] relative to that of [3,4] can be ascribed to the following two aspects: i) the medium in the hydrogel (similar to the cytoplasm in the cell and the surfactant micelle [16] ) would be expected to be highly viscous, which would slow Brownian diffusion of excited 5, [15,17] thus reducing quenching; ii) the diffusion of excited 5 around and within the nanofibers was restricted by p-p interactions, which would tend to minimize the energy loss in excited 5 via rotational diffusion. In fact, the hypothesis regarding p-p interactions seems reasonable because…”

Section: Introductionmentioning

confidence: 95%

“…[8,16] Gel PAM , a matrix consisting of crosslinked, random, hydrophilic polymer networks, was used as the control to estimate the contribution of the nanofibers of self-assembled amphiphilic molecules in Gel 1 + 2 . The CL quantum yield of Gel PAM A C H T U N G T R E N N U N G [3, 4a] showed a relatively modest value of 4.06 %, close to that of Gel 1 + 2 [4a].…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Supramolecular Confinement of Luminol and Heme Proteins to Enhance the Chemiluminescent Quantum Yield

Wang

2009

Chemistry A European J

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Artificial biolumiscence: The use of a supramolecular hydrogel to confine heme proteins and luminol can enhance the quantum yield of chemiluminescence (CL) by about an order of magnitude and give an emission time 4-6 times longer.Confining heme proteins and luminol with the nanofibers of self-assembled molecules was shown to enhance the quantum yield of their chemiluminescence by about an order of magnitude. Supramolecular hydrogels formed using (9-fluorenylmethyl)carbamate (Fmoc) peptides mimicked the cellular environment of bioluminescence, which typically shows high quantum yield. The effective emission times observed were 4-6 times longer and were ascribed to the stability of the heme proteins in the hydrogel, as confirmed by quantitative analysis. This chemiluminescent system was applied to detecting trace levels of blood with 4-6 times enhancement of intensity and better sensitivity for the highly diluted sample, indicating that this approach might be extended to other applications of chemiluminescent analysis, including immunoassays.

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“…As can be seen in Figure 9, the cage structure of the micelle is helpful for stabilizing the excited state to prevent it from quenching. 13,18 Meanwhile, the compartmentalization due to the formation of micelles could prevent the unstable excited state of * 2 SO generated in this CL reaction from quenching, 15 making CL intensity of the present system increased from 79 to 15936 counts. With the addition of Rh6G, as a result of existence in the form of cations in the aqueous solution, the sensitized Rh6G should be more easily aggregated around the micelle of anionic surfactant SDBS.…”

Section: Hsomentioning

confidence: 99%

Chemiluminescence of ClO₃⁻‐SO₃²⁻‐Rh6G‐SDBS System and Its Application to the Determination of Sulfite

2006

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Based on the micelle synergism mechanism, a chemiluminescence (CL) flow system for the determination of sulfite was described. The CL signal generated from the reaction of chlorate with sulfite in acidic solution was very weak, while the interfusion of sodium dodecylbenzenesulfonate (SDBS) resulted in a highly chemiluminescent intensity. The major goal of this work was to investigate and develop the SDBS micelle synergetic CL system. The mechanism was proposed and proved by spectrometry. The results indicated that the unique structure of SDBS micelles promoted the aggregation of rhodamine 6G (Rh6G) and a much easier energy transfer, leading to a marked shift to red in the CL emission. This CL system was developed for the determination of sulfite and the concentration of sulfite was proportional to the CL intensity in the range of 5.0×10 -8 -1.0×10 -5 mol/L with the detection limit of 1.7×10 -8 mol/L (S/N＝3). The relative standard deviation was 3.3% for 1.0×10 -6 mol/L sulfite solution with eleven repeated measurements. This method was successfully applied to the determination of sulfite in powder sugar.

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Chemiluminescence in oriented systems: chemiluminescence of 10,10′-dimethyl-9,9′-biacridinium nitrate in micellar media

Cited by 64 publications

References 26 publications

In vitro monitoring of nanogram levels of naproxen in human urine using flow injection chemiluminescence

In vitro monitoring of nanogram levels of naproxen in human urine using flow injection chemiluminescence

Bioinspired Supramolecular Confinement of Luminol and Heme Proteins to Enhance the Chemiluminescent Quantum Yield

Chemiluminescence of ClO₃⁻‐SO₃²⁻‐Rh6G‐SDBS System and Its Application to the Determination of Sulfite

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Chemiluminescence in oriented systems: chemiluminescence of 10,10′-dimethyl-9,9′-biacridinium nitrate in micellar media

Cited by 64 publications

References 26 publications

In vitro monitoring of nanogram levels of naproxen in human urine using flow injection chemiluminescence

In vitro monitoring of nanogram levels of naproxen in human urine using flow injection chemiluminescence

Bioinspired Supramolecular Confinement of Luminol and Heme Proteins to Enhance the Chemiluminescent Quantum Yield

Chemiluminescence of ClO3−‐SO32−‐Rh6G‐SDBS System and Its Application to the Determination of Sulfite

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Chemiluminescence of ClO₃⁻‐SO₃²⁻‐Rh6G‐SDBS System and Its Application to the Determination of Sulfite