I synthesised nano wires using Polyol method then centrifuged and I have dispersed them into ethanol But they did not disperse into isopropanol. How do I disperse them into isopropanol (IPA)?
One question - did you used any stabilizers at the synthesis?
At the first look your problem may be caused by higher viscosity of isopropanol in comparison with ethanol, then you can try to use more powerful dispergator. At the same time you can add some surface-active substances to facilitate the dispergation.