Table 2 Raman vibrational mode assignment for CAE and CAE–AgNPs.

From: Bioinspired 5-caffeoylquinic acid capped silver nanoparticles using Coffee arabica leaf extract for high-sensitive cysteine detection

Sample

Wavenumber (cm−1)

Raman assignments

Reference

CAE

450, 488

Out of plane bending vibrations of –OH

43,42,47

600, 800

Out of plane bending vibrations of –C = O and –CH

42,47

1640

C = O, C = N stretching vibrations

43,42,47

CAE–AgNPs

230, 450, 488

Ag–O, Ag–N vibrations Out of plane bending vibrations of –OH

42,47,48

600, 800

Out of plane bending vibrations of –C = O and –CH

42,47

1640

C = O, C = N stretching vibrations

42,47

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