Voltammetry of Nanoparticle Coupled Imine Linkage Based Receptors for Sensing of Al(III)

Voltammetry of nanoparticle coupled imine linkage based receptors for sensing of Al(III) and Co(II) ions

Susheel K Mittal*a, Rashmi Sharmaa, Manisha Sharmaa, Narinder Singhb, Jasminder Singhb, Navneet Kaurc and Manmohan Chhibbera

aSchool of Chemistry & Biochemistry, Thapar University, Patiala 147004, India

bDepartment of Chemistry, Indian Institute of Technology, Ropar (Pb) 140001, India

cDepartment of Nanoscience and Nanotechnology, Panjab University, Chandigarh 160014, India

Table of contents:-

Fig. S1 XRD pattern of zinc oxide nanoparticles

Fig. S2 SEM images of T4 coated with ZnO

Fig. S3 SEM images of T5 coated with ZnO

Fig. S4 SEM image of T6 coated with ZnO

Fig. S5 Differential Pulse Voltammograms of (a) T4 (b) T5 and (c) T6 (5×10-4M) showing the effect

of scan rate in DMSO: H20 (8:2, v/v). Scan rates are (10, 30, 50, 70, 100 mVsec-1), Modulation

amplitude 50mVsec-1

Fig. S6 Differential Pulse Voltammograms of (a) T4 (b) T5 and (c) T6 at different concentrations

(0.5mM to 0.01mM), scan rate 20mV sec-1 and Modulation amplitude 50mVsec-1

Fig. S7 Cyclic voltammograms of T4 (5×10-4M) in different solvents using 0.1M TBAP as

supporting electrolyte (GC working electrode scan rate 20 mVsec-1 E vs Ag/Ag+)

Fig. S8 Cyclic voltammograms of T4 (5×10-4M) in different solvents: H2O (8: 2, v/v) using 0.1M

TBAP as supporting electrolyte (GC working electrode scan rate 20mVsec-1 E vs Ag/Ag+)

Fig. S9 Cyclic voltammograms of (a) T5 (5×10-4M), (b) T6 (5×10-4M) in different solvents using

0.1M TBAP as supporting electrolyte (GC working electrode scan rate 20 mVsec-1 E vs

Ag/Ag+)

Fig. S10 Differential Pulse Voltammograms of T4, T5 and T6 with 0.10µM of different metal ions

(Na+, K+, Ca2+, Co2+,Mg2+, Al3+) in HEPES buffered DMSO/H20 (8:2, v/v) scan rate 20

mVsec-1 E vs Ag/Ag+

Fig. S11 Voltammograms of T4 and T5 (0.30µM) with 0.0-0.42µM of Al3+; T6 (0.30µM) with 0.0-

0.42µM of Co2+ in HEPES buffered DMSO/H20 (8:2, v/v) scan rate 20mVsec-1 E vs Ag/Ag+

Fig. S12 HOMO – LUMO structures of T4, T5, T6 and their metal complexes by using

Gaussian 03W software

Fig. S1 XRD pattern of zinc oxide nanoparticles

Fig. S2 SEM images of T4 coated with ZnO

Fig. S3 SEM images of T5 coated with ZnO Fig. S4 SEM image of T6 coated with ZnO

Fig. S5 Differential Pulse Voltammograms of (a) T4 (b) T5 and (c) T6 (5×10-4M) showing the

effect of scan rate in DMSO: H20 (8:2, v/v). Scan rates are (10, 30, 50, 70, 100 mVsec-1),

Modulation amplitude 50mVsec-1

Fig. S6 Differential Pulse Voltammograms of (a) T4 (b) T5 and (c) T6 at different concentrations

(0.5mM to 0.01mM), scan rate 20mV sec-1 and Modulation amplitude 50mVsec-1

Fig. S7 Cyclic voltammograms of T4 (5×10-4M) in different solvents using 0.1M TBAP as

supporting electrolyte (GC working electrode scan rate 20 mVsec-1 E vs Ag/Ag+)

Fig. S8 Cyclic voltammograms of T4 (5×10-4M) in different solvents: H2O (8: 2, v/v) using 0.1M

TBAP as supporting electrolyte (GC working electrode scan rate 20 mVsec-1 E vs

Ag/Ag+)

Fig. S9 Cyclic voltammograms of (a) T5 (5×10-4M), (b) T6 (5×10-4M) in different solvents using

0.1M TBAP as supporting electrolyte (GC working electrode scan rate 20 mVsec-1 E vs

Ag/Ag+)

Fig. S10 Differential Pulse Voltammograms of (a) T4, (b) T5 and (c) T6 with 0.10µM of different

metal ions (Na+, K+, Ca2+, Co2+,Mg2+, Al3+) in HEPES buffered DMSO/H20 (8:2,

v/v) using 0.1 M TBAP as supporting electrolyte (GC working electrode, scan rate 20

mVsec-1 E vs Ag/Ag+)

Fig. S11 Differential Pulse Voltammograms of (a) T4 and (b) T5 (0.30µM) with 0-0.42µM of Al3+;

0.1 M TBAP as supporting electrolyte (GC working electrode, scan rate 20 mVsec-1 E vs

Ag/Ag+)

Fig. S12 HOMO – LUMO structures of T4, T5, T6 and their metal complexes by using

Gaussian 03W software