Figures & data
Scheme 1 Schematic diagram showing the conjugation of CuInS/ZnS and meso-tetra-(4-sulfonatophenyl) porphyrin (TPPS4).
![Scheme 1 Schematic diagram showing the conjugation of CuInS/ZnS and meso-tetra-(4-sulfonatophenyl) porphyrin (TPPS4).](/cms/asset/a0f31251-33bb-49c6-8d04-37a6f7d6bb0a/dijn_a_12191026_f0001_c.jpg)
Figure 1 (A) FTIR spectra of GSH and GSH-capped CuInS/ZnS QDs, (B) PL spectra of CuInS QDs core and CuInS/ZnS QDs core\shell, (C) PL spectra and (D) absorption spectra of CuInS\ZnS QDs core-shell at different Zn:Cu + In ratio.
![Figure 1 (A) FTIR spectra of GSH and GSH-capped CuInS/ZnS QDs, (B) PL spectra of CuInS QDs core and CuInS/ZnS QDs core\shell, (C) PL spectra and (D) absorption spectra of CuInS\ZnS QDs core-shell at different Zn:Cu + In ratio.](/cms/asset/7ccd702d-949b-4527-900c-982ce4d557ad/dijn_a_12191026_f0002_c.jpg)
Figure 2 (A, B) TEM images of CuInS/ZnS QDs, SEM of CuInS QDs (C) and CuInS/ZnS QDs (D) and the EDS of CuInS QDs (E) and CuInS/ZnS QDs (F).
Abbreviations: TEM, transmission electron microscopy; QDs quantum dots ; SEM, scanning electron microscopy; EDS, electron dispersive spectroscopy.
![Figure 2 (A, B) TEM images of CuInS/ZnS QDs, SEM of CuInS QDs (C) and CuInS/ZnS QDs (D) and the EDS of CuInS QDs (E) and CuInS/ZnS QDs (F).Abbreviations: TEM, transmission electron microscopy; QDs quantum dots ; SEM, scanning electron microscopy; EDS, electron dispersive spectroscopy.](/cms/asset/0be689bf-2fb1-4e22-ab5a-1374bc915998/dijn_a_12191026_f0003_c.jpg)
Figure 3 FTIR spectra of (A) TPPH2, (B) TPPS4; absorption spectra of (C) TPPH2 in DMSO, (D) water-soluble TPPS4; 1H NMR spectra of (E) TPPH2 and (F) TPPS4.
Abbreviations: FTIR, Fourier-transform infrared spectroscopy; NMR, nuclear magnetic resonance.
![Figure 3 FTIR spectra of (A) TPPH2, (B) TPPS4; absorption spectra of (C) TPPH2 in DMSO, (D) water-soluble TPPS4; 1H NMR spectra of (E) TPPH2 and (F) TPPS4.Abbreviations: FTIR, Fourier-transform infrared spectroscopy; NMR, nuclear magnetic resonance.](/cms/asset/b301b426-1a3a-4a44-9c65-cea782e19411/dijn_a_12191026_f0004_b.jpg)
Table 1 Effect of pH on the stokes shift of TPPS4
Figure 5 (A) Photoluminescence (PL) spectra of TPPS4 at different excitation wavelengths, (B) PL spectra and (C) absorption spectra at different CuInS/ZnS:TPPS4 ratios and (D) radar chart of CuInS/ZnS–TPPS4 conjugate at different synthetic temperatures (insert: area chart of the conjugate).
![Figure 5 (A) Photoluminescence (PL) spectra of TPPS4 at different excitation wavelengths, (B) PL spectra and (C) absorption spectra at different CuInS/ZnS:TPPS4 ratios and (D) radar chart of CuInS/ZnS–TPPS4 conjugate at different synthetic temperatures (insert: area chart of the conjugate).](/cms/asset/38f95258-8619-4bff-8c96-65f5248e6869/dijn_a_12191026_f0006_c.jpg)
Figure 6 Fourier-transform infrared spectroscopy (FTIR) of TPPS4, CuInS/ZnS and TPPS4–CuInS/ZnS conjugate.
![Figure 6 Fourier-transform infrared spectroscopy (FTIR) of TPPS4, CuInS/ZnS and TPPS4–CuInS/ZnS conjugate.](/cms/asset/cd926c24-2a5c-4abb-8011-373e24609678/dijn_a_12191026_f0007_c.jpg)