Fig. 2: Structural characterization of microcapsules before and after UV irradiation.
From: Photo-modulated activation of organic bases enabling microencapsulation and on-demand reactivity
SEM images of (a) intact and (c) ruptured capsules containing NPPOC-protected hexylamine (P-HA) payloads. b TGA of P-HA capsules demonstrates significantly enhanced thermal stability compared to the unencapsulated core solution. The inset offers a magnified view of the temperature range from 150 °C to 350 °C. d Stereomicrograph of as-prepared P-HA capsules showing a clear, off-white appearance. SEM images of UV-irradiated (e) intact and (g) ruptured P-HA capsules. f TGA of UV-irradiated P-HA capsules verifies the preservation of enhanced thermal stability compared to the unencapsulated, UV-irradiated core solution. The inset offers a magnified view of the temperature range from 150 °C to 350 °C. h Stereomicrograph of UV-irradiated P-HA capsules showing a brown color. Each experiment was independently repeated three times, yielding consistent results.
