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Figure 2
Optical microscopy of L-Phe after (a) 4 h and (b) 3 days (wo = 1, 3, 5, 10, 20; 210 mM L-Phe aqueous solution). SEM image of L-Phe with (c) wo = 1, (d) wo = 3 and (e) wo = 20; the inset shows an enlarged view of the fibril structure. (f) TEM image of L-Phe in ME with fibrils, the inset shows the SAED pattern. (g) TEM image of the crystalline fibril structure. (h) Laser confocal Raman profiles of L-Phe with different morphology, reference spectra of L-Phe monohydrate and anhydrate. (i) XRD patterns of L-Phe with different wovalues.

IUCrJ
Volume 9| Part 3| May 2022| Pages 370-377
ISSN: 2052-2525
https://doi.org/10.1107/S2052252522003001