Interaction Scheme

Molecule

Neutral red protonated
Neutral Red protonated

c = 100.0 µM

Host

Scx8
sCx8

c = 0.0 — 9.0 µM

Binding Properties

𝜈 Molecule 1 : 1 Host
Ka = 4.90⋅106 ± 3.39⋅105 M-1
Kd =
logKa = 6.69 ± 0.03
T 5.0 °C 278 K
Energy kJ mol-1 kcal mol-1
ΔG = -35.63 ± 0.16 -8.52 ± 0.04
These are the specifications of the determination of the experimental results.
Detection Method: Direct
Assay Type: Direct Binding Assay
Technique: Fluorescence
𝛌ex = 525.0 nm
𝛌em = 573.0 nm
IboundIfree = 2.0
Detailed information about the solvation.
Solvent System Buffer System 200 mM acetate pH-4.5
Solvents water
Additives acetic acid
Sodium acetate
Source of Concentration
Total concentration 200.0 mM
pH 4.5
Please find here information about the dataset this interaction is part of.
Citation:

M. Chen, G. W. Diao, SupraBank 2024, Intermolecular Complexation Between p-Sulfonated Calix[4,6,8]arene Sodium and Neutral Red (dataset). https://doi.org/10.34804/supra.20210928119

Link: https://doi.org/10.34804/supra.20210928119
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Please find here information about the scholarly article describing the results derived from that data.
Citation:

M. Chen, G. W. Diao, J Solution Chem 2011, 40, 481–491.

Link: https://doi.org/10.1007/s10953-011-9660-z
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Binding Isotherm Simulations


The plot depicts the binding isotherm simulation of a 1:1 interaction of Neutral Red protonated (4.083299305839118e-06 M) and sCx8 (0 — 8.166598611678236e-06 M).