Preparation of MAD Transfer Samples

Samples of 1a–d were mixed with solid pyrene at T = 24 °C in a scintillation vial to make a 0.1 wt % mixture of sample in pyrene. The solid mixtures were placed into a preheated sand bath held at T = 200 °C until the pyrene completely melted (approximately 2 min). The melted mixtures were lightly swirled for 15 s in the sand bath to ensure homogeneous dispersion of the sample in the pyrene melt. The melted mixtures were immediately placed in an T = −78 °C acetone/dry ice bath to induce rapid crystallization. The solid was ground to a fine powder prior to deposition.