Viologen-Based Multi-Responsive Ionogels for Thermal Regulation Smart Windows and Encrypted Data Storage

• • Coloration efficiency of 433.6 cm2 C-1 and coloration time of 2.52 s enable rapid, energy-efficient electrochromic switching, critical for dynamic window tinting in commercial buildings where response latency below 3 s is required for occupant comfort and grid-interactive demand response. • • Maximum indoor temperature reduction of 15 °C in simulated summer conditions demonstrates substantial cooling load reduction, directly translating to HVAC energy savings of up to 30% in retrofitted glazing systems, as validated by model house tests. • • Three stable switchable states under thermal and electrical regulation provide full-spectrum photothermal management, addressing the dual-seasonal requirement of daytime transparency and nighttime opacity, a bottleneck that has stalled previous single-stimulus smart windows. • • Dual-encrypted data storage via UCST and voltage triggering introduces a hardware-level security layer with orthogonal stimuli, mitigating tampering risks in distributed sensor networks where conventional encryption fails under physical access attacks.