Determination of dopamine hydrochloride by host-guest interaction based on water-soluble pillar[5]arene

Inclusion complexes of norepinephrine with β-cyclodextrin, 18-crown-6 and cucurbit[7]uril: experimental and molecular dynamics study

“…An appropriate amount of the 18C6, CB7, bCD and NP were dissolved in 20 ml water to make a concentration of 15 mM of each (few drops of HCl (1 M) were added in the case of CB [7] to assist dissolution). Mixtures of solutions of NP in presence of individual hosts were prepared to form binary complexes.…”

“…Sodium acetate/acetic acid buffer of pH 5.0 was used for the preparation of all aqueous solutions. Series of solutions with constant concentration of NP and different concentrations of hosts (bCD, 18-crown-6 and CB [7]) were prepared. The concentration of NP solution was maintained at 3.5 Â 10 À6 M while that of the host molecules viz.…”

“…However, recently other new systems have emerged in the literature such as cucurbit[n]urils and pillararenes, together with their homologues and derivatives. [1][2][3][4][5][6][7][8] These molecules have been used as selective hosts for a plethora of guests. Interestingly, the complexes formed between these hosts and their guests were mainly stabilized by weak noncovalent interactions such as van der Waals forces, hydrophobic interactions, hydrogen bonding, and ion-dipole interactions among others.…”

Tetracarboxylic acids on a thiacalixarene scaffold: synthesis and binding of dopamine hydrochloride

“…Currently, various synthetic compounds capable of selective binding with dopamine through multiple non-covalent interactions, such as electrostatic interactions, hydrogen bonding, p-p-stacking, and hydrophobic forces, have been proposed as host molecules. The organophosphorus compounds, 9 calix[n]arenes (n = 4, 5, 6), [10][11][12][13][14][15][16] calix [4]resorcinarenes, 17 and pillar [5]arenes 18 with acidic, 10,12 quinone 11 and amide 8 groups, and charged fragments 14,18 as binding sites, show complexation ability toward dopamine.…”

Development of a SERS strategy to overcome the nanoparticle stabilisation effect in serum-containing samples: Application to the quantification of dopamine in the culture medium of PC-12 cells

“…In this context, many quantitative analytical techniques have been developed to sense DA: separation-based approaches, like liquid chromatography [6], capillary electrophoresis [7] or gas chromatography [8], and spectroscopic ones, such as fluorescence [9][10][11] or colorimetry [11,12]. However, the separation techniques often require long and complex sample preparation, extensive analysis times and typically employ economically and environmentally expensive organic solvents, whereas some spectroscopic analyses may lack specificity.…”