Angew. Chem. (Int. ed.) Angew. Chem. (Int. ed.) Encapsulation Enhances the Quantum Coherence of a Solid‐State Molecular Spin Qubit Swain Abinash Barrios Leoní A. Nelyubina Yulia Teat Simon J. Roubeau Olivier Novikov Valentin Aromí Guillem 2025 research-article