Department of Chemistry, National Sun Yat Sen University, Kaohsiung, 804, Taiwan

Transcription

1 Electronic upplementary Material (EI) for New Journal of Chemistry This journal is The Royal ociety of Chemistry and The Centre National de la Recherche cientifique 2014 upporting Information of ensitive and selective colorimetric sensing of Fe 3+ ion using p-amino salicylic acid dithiocarbamate functionalized gold nanoparticles Vaibhavkumar N. Mehta a and uresh Kumar Kailasa a* and Hui-Fen Wu b adepartment of Chemistry,. V. National Institute of Technology, urat , India b Department of Chemistry, National un Yat en University, Kaohsiung, 804, Taiwan *Corresponding author, Phone: ; Fax: sureshkumarchem@gmail.com C 2 /K H 2 N DMF p-amino salicylic acid DTC-PA DTC-PA- NPs Figure 1. chematic representation for synthesis of DTC-PA ligand and DTC-PA- NPs assemblies.

2 Electronic upplementary Material (EI) for New Journal of Chemistry, g This 51.2 journal is The Royal ociety of Chemistry and The Centre National de la Recherche cientifique %T , g cm N-H stretching H 2 N C= stretching Ar-CH stretching C-N stretching %T N-H stretching H stretching C- stretching C-N stretching %T cm (c) H stretching disappeared 2561 cm Figure 2. FT IR spectra of pure p-amino salicylic acid DTC-PA and (c) DTC-PA- NPs. cm -1

3 Electronic V 1 upplementary Material (EI) for New Journal of Chemistry This journal is The Royal ociety of Chemistry and The Centre National de la Recherche cientifique BRUKER AVANCE II 400 NMR pectrometer AIF Panjab University Chandigarh H H NH 2 Current Data Parameters NAME Apr EXPN 290 PRCN 1 F2 - Acquisition Parameters Date_ Time INTRUM spect PRBHD 5 mm PABB BB- PULPRG zg30 TD LVENT DM N 8 D 2 WH Hz FIDRE Hz AQ sec RG 256 DW usec DE 6.00 usec TE K D sec TD0 1 ======== CHANNEL f1 ======== NUC1 1H P usec PL db F MHz F2 - Processing parameters I F MHz WDW EM B 0 LB 0.30 Hz GB 0 PC ppm H H H N H (c) H H H N Figure 3. 1 H NMR spectra of pure p-amino salicylic acid DTC-PA and (c) DTC-PA- NPs.

4 Electronic upplementary Material (EI) for New Journal of Chemistry This journal is The Royal ociety of Chemistry and The Centre National de la Recherche cientifique A 700 /A Blank Blank Co2+ Co 2+ Pb2+ Pb 2+ Ni2+ Ni 2+ Cd2+ Cd 2+ Zn2+ Zn 2+ Fe2+ Fe 2+ Mn2+ Mn 2+ Hg2+ Hg 2+ Mg2+ Mg 2+ Cu2+ Cu 2+ Fe3+ Fe 3+ Metal ions Figure 4 The relative extinction ratio of DTC-PA- NPs at A 700 nm /A 520 nm in the presence of Fe 3+ ion over other metal ions (Cd 2+, Co 2+, Cu 2+, Fe 2+, Fe 3+, Hg 2+, Mg 2+, Mn 2+, Ni 2+, Pb 2+, Zn 2+ ).

5 Electronic upplementary Material (EI) for New Journal of Chemistry This journal is The Royal ociety of Chemistry and The Centre National de la Recherche cientifique (d) 1.2 (c) (d) A 700 nm /A 520 nm 1 (c) 0 Capped NPs Capped NPs + Different metal ions Capped NPs + Different metal ions + Fe3+ Capped NPs + Fe3+ Figure 5. The extinction ratio of A 700 nm /A 520 nm DTC-PA- NPs DTC-PA- NPs with different metal ions without Fe 3+ (c) DTC-PA- NPs with Fe 3+ in presence of different metal ions and (d) DTC-PA- NPs in presence of only Fe 3+. Inset picture show the photographic image of capped NPs capped NPs + different metal ions (c) capped NPs + different metal ions + Fe 3+ and (d) capped NPs + Fe 3+

6 Electronic upplementary Material (EI) for New Journal of Chemistry This journal is The Royal ociety of Chemistry and The Centre National de la Recherche cientifique µm 50 µm 100 µm µm 50 µm 100 µm Figure 6. UV-visible absorption spectra of DTC-PA- NPs as colorimetric probes for analysis of Fe 3+ in spiked blood serum and spiked urine at 10, 50 and 100 µm of Fe 3+.

7 Electronic upplementary Material (EI) for New Journal of Chemistry This journal is The 1.0 Royal ociety of Chemistry and The Centre National de la Recherche cientifique Day 1 Day 2 Day Figure 7. Reproducibility of the present method for analysis of Fe 3+ (100 µm) at inter-day spectra and at intra-day spectra by using DTC-PA- NPs as colorimetric probes.