supplementary data cysteine multi-analytes selective dansyl … · 2019-04-01 · supplementary...
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Supplementary Data
Multi-analytes selective dansyl derivative for the fluorescent detection of Cu(II) and
cysteine
Thangaraj Anand, Vinita Bhardwaj and Suban K Sahoo*
Department of Applied Chemistry, SV National Institute of Technology (SVNIT), Surat-395007,
Gujarat, India.
*Corresponding Author (Dr Sahoo): E-mail: [email protected]; Tel.: 91-261-
2201855.
Fig. S1. 1H NMR spectrum of DA in DMSO-d6.
Electronic Supplementary Material (ESI) for Photochemical & Photobiological Sciences.This journal is © The Royal Society of Chemistry and Owner Societies 2019
Fig. S2. 13C NMR spectrum of DA in DMSO-d6.
Fig. S3. HRMS spectrum of DA.
Fig. S4. ATR-FTIR spectrum of DA.
Fig. S5. UV-Visible absorbance spectra of DA (2.5×10-5 M) in DMSO:H2O (1:1, v/v) upon the
addition of Cu2+, Co2+, Ni2+, Mn2+, Mg2+, Fe3+, Fe2+, Zn2+, Cd2+, Hg2+, Pb2+, Al3+ and Cr3+ ions
(20 µL, 1×10-3M, H2O).
Fig. S6. (a) Benesi-Hildebrand expression fitting of fluorescence titration curve of DA upon
addition of Cu2+ ion.
Fig. S7. HRMS spectrum of DA with Cu2+ ion.
Fig. S8. DFT computed distribution of electron densities: HOMO’s and LUMO’s diagrams of
DA and its complex with Cu2+.
Fig. S9. HRMS Spectrum of DA-Cu2+ complex with Cys.
4000 3500 3000 2500 2000 1500 1000
DA+Cu2++Cys
%T
(a.u
.)
DA + Cu2+
Wavenumber, cm-1
Fig. S10. FT-IR spectra of the DA-Cu2+ and DA-Cu2+-Cys complexes.
Fig. S11. Benesi-Hildebrand expression fitting of fluorescence titration curve of DA-Cu2+ upon
addition of Cys.
Table S1. Comparison table of DA with some reported fluorescent sensor for Cu2+.
Systems Medium Analyte Detection limit Applications Ref*
Bodipy system CH3CN:H2O Cu2+ 0.87 µM Live cell imaging
1
Rhodamine-derived
Tris buffer Cu2+ 2 µM Live cell imaging
2
Pyrene-thiophene conjugate
Tris-HNO3 buffer Cu2+ 2×10-8M Real sample analysis
3
Julodine Schiff base
CH3CN:H2O Cu2+ 23.5 µM 4
Rhodamine Schiff base
CH3CN/Tris–HCl solution
Cu2+ 2.43×10-8 M 5
Rhodamine derivative
HEPES buffer Cu2+ 3 ppb bio imaging 6
NBD system HEPES buffer Cu2+ 0.84 µM Live cell imaging
7
Pyrazole system CH3CN:H2O Cu2+ 24 µM Live cell imaging
8
Azine based schif base
CH3CH2OH:buffer Cu2+ 3.4 × 10− 7 M Live cell imaging
9
Naphthol Derivative
DMSO:H2O Cu2+ 0.27 µM Live cell imaging
10
Thiazoline-Pyrene
DMSO:H2O Cu2+ 0.101mm Real sample analysis
11
Oligothiophene derivative
DMSO:H2O Cu2+ 4.2×10-7 M Real sample analysis
12
Naphthalene Schiff base
DMSO:H2O Cu2+ 7.25×10-8 M Test strip detection
13
Salicylaldehyde Schiff base
Tris buffer:DMSO Cu2+ 8.77 µM Real sample analysis
14
DA DMSO:H2O Cu2+ and Cys
0.979 µM and 1.76 µM
Real sample analysis
This work
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