Which of these smart building materials was first to be commercially deployed in a major skyscraper project?

Smart building materials represent one of the most significant innovations in architectural product development of the last decade. These advanced materials can respond to environmental changes, improve energy efficiency, and enhance occupant comfort. How well do you know the latest breakthroughs in this rapidly evolving sector of architectural product innovation?

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Self-healing concrete (using embedded bacteria that activate when cracks form)
Electrochromic glass (that changes opacity based on electrical current)
Thermal energy storage facades (PCM-integrated building skins)
Air-purifying architectural membranes (titanium dioxide-coated fabrics)