Zn2+-Induced aggregation of a water-soluble iridium complex enhances aggregation-induced emission for intracellular Zn2+ imaging

Electronic Supplementary Material (ESI) for Journal of Materials Chemistry B. This journal is © The Royal Society of Chemistry 2023 Electronic Supplementary Information Atomically dispersed Fe-Zn dual-site nanozymes with synergistic catalytic effects for the simultaneous detection of Cr(VI) and 8hydroxyquinoline Min Feng,a Xiaofang Chen,a Yuhang Liu,b Yan Zhao,a Pran Gopal Karmaker,a Jia Liu,a Ya Wang,*a and Xiupei Yang*a aCollege of Chemistry and Chemical Engineering, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637000, PR China. bSchool of Chemistry and Chemical Engineering, Analytical Testing Center, Institute of Micro/Nano Intelligent Sensing, Neijiang Normal University, Neijiang 641100, PR China. *Corresponding author at: College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, PR China. E-mail addresses: ywang312@163.com (Y. Wang), xiupeiyang@cwnu.edu.cn (X. Yang) S-1 Table S1 Comparison of the kinetic parameters of different single-atom nanozymes and HRP. Catalyst FeSNC Fe55-NC BiSA@Au-200 Fe-NC-800NTs HRP FeZn-NC MWCN/FeZn-NC -8 -1 Substrate Vmax (10 M·s ) TMB 201 H2O2 261 TMB 27 H2O2 23 TMB 92 H2O2 79.6 TMB 65 H2O2 15.7 TMB 10 H2O2 8.71 TMB 3.1 H2O2 2.5 TMB 4.3 H2O2 6.9 W (mg/L) 16 1 33.3 5 0.001 3.25 3.25 S-2 Km (mM) 2.46 25.44 0.37 4.90 1.54 59.6 0.08 2.47 0.43 3.70 0.05 0.07 0.04 1.34 Ref. [2] [3] [4] [5] [6] This work This work Table S2 Comparison of the proposed method with other methods for the detection of Cr(VI). No. Method Materials Linear Rang (μM) LOD (µM) Ref. 1 Colorimetry PNPG-PEG 0.01-12.5 0.012 [7] 2 Colorimetry GO 0.07-0.43 0.0058 [8] 3 Colorimetry AuNR@Ag 5-35 1 [9] 4 Colorimetry CeO2NRs-MOF 0.03-5 0.02 [10] 5 Colorimetry CoFe2O4/H2PPOP 0.6-100 0.026 [11] 6 Fluorescence NH2-CuMOFs 0.1-20 0.018 [12] 7 Fluorescence CQDS 1.5-30 0.023 [13] 8 Fluorescence GCPF 0-50 0.22 [14] 9 Colorimetry FeZn-NC 1-10 0.56 This work 10 Colorimetry MWCN/FeZn-NC 0.1-15 0.040 This work S-3 Table S3 Comparison of the proposed method with other methods for the detection of 8-HQ. No. Method Materials Linear Rang (μM) LOD (µM) Ref. 1 Electrochemical CoPc-SPCE 10-250 0.89 [15] 2 Electrochemical ANSA-GC 0.5-425 0.16 [16] 3 Electrochemical SLSMCNTPE 0.2-1000 0.11 [17] 4 Colorimetry FeZn-NC 0.4-50 0.18 This work 5 Colorimetry MWCN/FeZn-NC 0.15-50 0.055 This work S-4 Table S4 Analytical results of the 8-HQ determination in samples. Sample Hair oil Conditioner Initial Added (µM) (µM) - - Found (µM) Recovery (%) RSD (%, n=5) 5.0 5.27± 0.12 105.4 2.4 25.0 26.43 ± 0.36 105.7 1.4 45.0 46.13 ± 0.28 102.5 0.6 5.0 4.86 ± 0.10 97.2 2.0 25.0 25.78 ± 0.37 103.1 1.4 45 45.59 ± 0.14 101.3 0.3 S-5 Fig. S1 Effect of MWCN (a) and tempetature (b) on the catalytic activity of MWCN/FeZn-NC. S-6 Fig. S2 UV–vis spectra of different S-7 materials in the H2O2/TMB solution. Fig. S3 SEM images S-8 of the MWCN. Fig. S4 SEM images S-9 of the FeZn-NC. Fig. S5 EDS images of S-10 the MWCN/FeZn-NC. Fig. S6 XRD (a) and Raman (b) S-11 images of the MWCN/FeZn-NC. Fig. S7 Effect of pH (a) and temperature (b) on the catalytic activity of MWCN/FeZn-NC. S-12 Fig. S8 Effect of the amount of TMB (a) and H2O2 (b) on the detection of Cr(VI). S-13 0.4 A/A0 (a.u.) 0.3 0.2 0.1 Fig. S9 Effect of anions on the S-14 chromogenic I- 3 NO 4 - SO 2 2 3 - CO S 2- 4 3 4 - O 2HP PO Cr (V I) 0.0 system of Cr(VI). Fig. S10 Effect of the amount of TMB (a) and H2O2 (b) on the detection of 8-HQ. S-15 Fig. S11 Relationship between the Abs and different concentration of free radical scavengers. S-16 Intensity (a.u.) MWCN/FeZn-NC/H2O2 3360 3380 3400 3420 3440 Magnetic field (G) Fig. S12 ESR spectra of the DMPO/·O2- spin adduct of MWCN/FeZn-NC/H2O2. S-17 References (1) Ghayyem, S., Swaidan, A., Barras, A., Dolci, M., Faridbod, F., Szunerits, S., Boukherroub, R., 2021. Colorimetric detection of chromium (VI) ion using poly(N-phenylglycine) nanoparticles acting as a peroxidase mimetic catalyst. Talanta. 226, 122082. https://doi.org/10.1016/j.talanta.2021.122082. (2) (2) Jiao, L., Kang, Y., Chen, Y., Wu, N., Wu, Y., Xu, W., Wei, X., Wang, H., Gu, W., Zheng, L., Song, W., Zhu, C., 2021. 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