Achieving white light emission from a hydrazone through three different channels: AIE, solvatochromism and excitation wavelength

Reported herein is a hetero-bis-hydrazone that emits white light, capitalizing on AIE, solvatochromism, and tuning excitation wavelength. Two ESIPT moieties simultaneously emitting in the blue and orange regions led to white light. The presence of four tautomers, two from each, was crucial to achieve this.