Fig. 2. Time-resolved photoluminescence decay curves of Cz⁹PhAn in dichloromethane solution monitored at 430 nm (a), and Cz⁹PhAn film sample monitored at 440 nm (b) and 600 nm (c). Open circles denote TCSPC data points, while solid lines denote the poly-exponential fitting of the data, except for the black lines, which represent instrument response functions. The excitation wavelength is 380 nm. Fitting results are summarized in Table 1.