Fig. 3: Experimental and simulated powder X-ray diffraction spectra of indium phosphide quantum dots capped with carboxylates of different lengths.

a Experimental powder X-ray diffraction spectra of indium phosphide quantum dots capped with myristate (C₁₄H₂₇O₂), palmitate (C₁₆H₃₁O₂), and stearate (C₁₈H₃₅O₂) ligands. b Simulated powder X-ray diffraction spectra of indium phosphide quantum dots capped with myristate, palmitate, and stearate ligands. c Experimental powder X-ray diffraction spectra of indium phosphide quantum dots initially capped with oleate (C₁₈H₃₃O₂) and after ligand exchange with octadecylphosphonate (C₁₈H₃₈O₃P). d Experimental powder X-ray diffraction spectra of indium phosphide quantum dots initially capped with stearate and after ligand exchange with oleylamine (C₁₈H₃₇N). Note that the powder X-ray diffraction pattern of stearate (C₁₈H₃₅O₂) capped indium phosphide quantum dots in d differs from the one in panel a as the quantum dots are larger and from a separate synthesis. Cu K-\(\alpha \) \((\lambda \,=\,1.5418\,{\AA})\) is the X-ray source for all experimental and simulated powder X-ray diffraction spectra.