Cholic acid-based high sensitivity fluorescent sensor for α,ω-dicarboxylate: an intramolecular excimer emission quenched by complexation

Liu, Shunying; He, Yong; Chan, Wing Hong; Lee, Albert W. M.

doi:10.1016/j.tet.2006.09.042

Cited by 40 publications

(18 citation statements)

References 54 publications

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“…The stability constant (K s ) of fluorescence sensors 1 and 2 with fructose, D ‐glucose, galactose, sorbitol, arabinose and lactolose were calculated by fitting the emission wavelength at 323 and 329 nm versus concentration of saccharides . The stability constants for compound 1 and 2 are given in Table .…”

Section: Resultsmentioning

confidence: 99%

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Fluorene‐based boronic acids as fluorescent chemosensor for monosaccharides at physiological pH

2014

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Two fluorene-based boronic acids, 9,9-dimethyl-9H-fluoren-2-yl-2-boronic acid (1) and 9,9-dimethyl-9H-fluoren-2,7-diyl-2,7-diboronic acid (2), were synthesized and their sensing abilities for detection of D-monosaccharides were investigated by fluorescence at physiological pH. It was found that both boronic acids 1 and 2 have high selectivity and sensitivity for D-fructose with stability constant of 47.2 and 412.9, respectively. The sensor 2 showed a linear response toward D-fructose in the concentration range from 5 × 10(-5) to 10(-1) mol L(-1) with the detection limit of 2 × 10(-5) mol L(-1).

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Section: Resultsmentioning

confidence: 99%

“…Where, I min and I max are the initial (no sugar) and final fluorescence intensity of the titration curves. In case of an apparent 1:1 complexation model, n = 1, and in the case of an apparent 1:2 complexation model, n = 2 .…”

Section: Methodsmentioning

confidence: 99%

Fluorene‐based boronic acids as fluorescent chemosensor for monosaccharides at physiological pH

2014

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“…Since the first artificial receptor for dicarboxylate anions by Lehn and Hosseini 23 in 1982, numerous excellent receptors/sensors for dicarboxylate anions have been reported. [4][5][6][7][8][9] We have also reported a cholic acid-based sensor for sebacate 9 and adipate. 24 But most of these artificial receptors/sensors have a high selectivity for a relative long-chain aliphatic or aromatic dicaroxylates, and few literatures reported an artificial sensor for malonate, which has a short chain between the two binding units.…”

Section: Dmso (C＝50×10mentioning

confidence: 99%

Enhanced Sensitivity and Selectivity of Chemosensor for Malonate by Anchoring on Gold Nanoparticles

Liu

Liang

et al. 2011

Chin. J. Chem.

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A novel organic-inorganic nanohybrided receptor 4 functionalized with bis-thiourea arms and then assembled on gold nanoparticles was synthesized. The preorganized system possesses phenylthiourea units for the spectrophotometric sensing of dicarboxylates, especially malonate, based on changes in the surface plasmon absorption of the gold nanoparticles (GNPs). The intensity of the absorbance band increases gradually with the concentration of dicarboxylates increasing. But such an ion-selective change in the plasmon band was not observed in control tests carried out by mono-thiourea-modified GNPs, receptor 3 and the free receptor 2. As it is shown from the association constants, derived from quantitative titrations, receptor 4 can selectively recognize dicarboxylate anions of shorter carbon chain, and has the highest affinity to malonate. The interaction properties for anions of receptor 4 were evaluated by 1 H NMR and UV-vis spectroscopic methods.

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“…The addition of guanine leads to a decrease in the luminescence with a red-shift of 5 nm in peak position (curve 2), attributed to the association of [Ru(bpy) 3 ] 2? with guanine on the surface by the p-p stacking interaction [36,37]. When a given mass of DHP was introduced to [Ru(bpy) 3 ] 2?…”

Section: Effects Of Dhp Concentrationmentioning

confidence: 99%

Electrocatalytic activity of [Ru(bpy)3]2+ toward guanine oxidation upon incorporation of surfactants and SWCNTs

Chen

Weng

et al. 2011

J Appl Electrochem

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The homogeneous and mediated oxidation of guanine by [Ru(bpy) 3 ] 2? (2,2 0 -bipypyridine) in the presence of surfactants and single-walled carbon nanotubes (SWCNTs) has been investigated using cyclic voltammetry, repetitive differential pulse voltammetry and rotating electrode method. In acidic medium, the oxidation of guanine was controlled by mass transport process of [Ru(bpy) 3 ] 2? in solution, leading to a homogeneous electrocatalysis. In neutral medium, the result from emission spectroscopy suggested the formation of the aggregates containing [Ru(bpy) 3 ] 2? , dihexadecyl phosphate (DHP) and guanine. The electrocatalysis of [Ru(bpy) 3 ] 2? toward guanine oxidation was promoted by anionic surfactant DHP and, however, hindered by an excess amount of hexadecyl trismethyl ammonium chloride (HTAC) or SWCNTs added to solutions. The electrocatalytic mechanism of [Ru(bpy) 3 ] 2? for guanine oxidation becomes evident, strongly depending on the presence of anionic or cationic surfactants and SWCNTs.

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Cholic acid-based high sensitivity fluorescent sensor for α,ω-dicarboxylate: an intramolecular excimer emission quenched by complexation

Cited by 40 publications

References 54 publications

Fluorene‐based boronic acids as fluorescent chemosensor for monosaccharides at physiological pH

Fluorene‐based boronic acids as fluorescent chemosensor for monosaccharides at physiological pH

Enhanced Sensitivity and Selectivity of Chemosensor for Malonate by Anchoring on Gold Nanoparticles

Electrocatalytic activity of [Ru(bpy)3]2+ toward guanine oxidation upon incorporation of surfactants and SWCNTs

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