the National Natural Science Foundation of China(nos.21774079,21975167,and 51503129);the National Key R&D Program of China(no.2019YFA0904500);the Fundamental Research Funds for Central Universities.
Melanin is a ubiquitous but poorly understood polymeric,dark brown to black pigment biomaterial found both in nature and by organic synthesis.Its structural heterogeneity and disordered covalent/noncovalent interactio...