Figure 10. Effect of rotation speed and water fraction on the FL of solutions of TPE particles (a) change in the FL maxima at different rotation speeds and constant water fractions. Change in the relative FL maxima as a function of rotation speed at (b) 50% and (c) 95% water fraction. (d) Change in relative intensity of FL as a function of water fraction at constant rotation speeds. Effect of the rotation speed of the VFD tube on the size of the TPE particles. (e) Reduction of particle size by increasing rotational speed with the water fraction at 80%. (f) Relationship between TPE particle size and rotation speed at different water fractions (Inset: Distribution of TPE particles prepared at 0 and 3000 rpm rotation speeds). (g) The fluorescence quantum yield (%) was measured for VFD-mediated (red line) and conventional batch (dotted line) methods at different water fractions⁵⁷. (h) The effect of rotation speed on the relative intensity of AIE-HBP (1 mM) and (i) and (j) size distribution and schematic drawing of AIE-HBP particles (1) before and (2) after VFD⁵⁸. (a-g) Reproduced with permission⁵⁷. Copyright 2020, Royal Society of Chemistry. (h-j) Reproduced under the terms of the CC BY 3.0 license⁵⁸. Copyright 2020, Royal Society of Chemistry.