PyMA feed fraction, the blue emission peak disappeared almost entirely, resulting in a nearly single red emission peak at 648 nm, which is very close to the measured value of NDI-polyVPy (640 nm) and matches the predicted value from MLREM (670 nm). As a result, blue-to-red emission colors were observed by adjusting the feed fraction of PyMA (Figure , middle and right). Therefore, the copolymerization strategy is deemed reliable for achieving the desired TSCT emission, and simultaneously more effective and convenient than homopolymerization.