Table 1.

Raman Shifts and Assignments of 4-MBA molecule adsorbed on ZnO (Ga-doped ZnO) NPs.

Raman (bulk)	SERS (on ZnO)	Assignment
1,596	1,594	υCC,8a(a1)
1,451	1,490	υCC+δCH
1,405	1,416	υCOO–
1,182	1,180	υCH,9(a1)
	1,148	υCH,15(b2)
1,098	1,078	υCC,12(a1)
913		δCSH,9b(b2)
813	845	δOCO

δ = bend or deformation; ν = stretch.