Efficient and Robust Molecular Solar Thermal Fabric for Personal Thermal Management.

Molecular solar thermal (MOST) materials, which can efficiently capture solar energy and release it as heat on demand, are promising candidates for future personal thermal management (PTM) applications, preferably in the form of fabrics. However, developing MOST fabrics with high energy storage capacity and stable working performance remains a significant challenge because of low energy density of the molecular materials and their leakage from the fabric. Here, we report an efficient and robust MOST fabric for PTM using azopyrazole-containing microcapsules with a deep-UV filter shell. The MOST fabric, which could co-harvest solar and thermal energy, achieved efficient photo-charging and photo-discharging (>90% photoconversion), a high energy density of 2.5 kJ m -2 , and long-term storage sustainability at month scale. Moreover, it could undergo multiple cycles of washing, rubbing, and recharging without significant loss of energy storage capacity. This MOST microcapsule strategy was easily used for the scalable production of a MOST fabric for solar thermal moxibustion. This achievement offers a promising route for the application of wearable MOST materials with high energy storage performance and robustness in PTM. This article is protected by copyright. All rights reserved.