Journal of Spectroscopy

Research Article

Interaction of Bradykinin and B2 Bradykinin Receptor Antagonists with Colloidal Au Surface Explored by Surface-Enhanced Raman Scattering

Table 2

Wavenumbers and proposed band assignments for SERS spectra of A: BK, B: [D- , , ,L- ]BK, C: Aaa[D- , , ,L- ]BK, D: [D- , , ,D- ,L- ]BK, and E: Aaa[D- , , ,D- ,L- ]BK adsorbed onto colloidal gold surface.
 Wavenumber/
 ABCDE
(NH2), Arg[ (C=N)], and/or Amide I—163116151639—
Phe[ ] and/or Arg[ ( ) + (C=N)] 1603——16081602
Phe[ ] and/or Pip and/or Arg[ (NH)]158515791596—1570
Pip——1551——
Imide II’ and/or Thi[ (CC)]15281521———
Thi[ (C–C)]—1500149515041501
Phe[ ], Arg[ (NH)], and/or tertiary amide IIp marker14431425143414381438
Thi[ (CH) + (C=C)], Pip combination, and/or (COO−)—1365137913601377
Arg[ (CH3)]1341—1339——
Pip[ (CH2)]—1310———
Pip[ (CN) + (CCH) + (CH2)] and/or Amide III—1288128112841275
Phe[ν 4]1266————
Pip[ (CH2)] and/or Amide III——12421251—
Phe[ ]1203————
Thi[ν(CH)]—1204121512021212
Arg[ν(CN)] and/or Thi[ (CH)]—1170117911651181
Arg[ν(CCC)] and/or Pip[ (CH2)]—1148114211511144
Aaa[ν(CC)]——1111—1102
Thi[in-plane (CH)] and/or Arg [ (CN)]———1093—
Arg[ν(CN)] and/or Thi[ (CH)]—10831070—1083
Arg[ν(CC)  +  ν(NC)]1058—— 1045
Phe[ ]1031——1026 
Pip[skeletal stretching]—1020
996		1019 1013
Phe[ ]1002——1000—
ν(CC) + (CH2)958—945957—
———939936
Arg[ (NH2)], Pip[ (CH)], and/or Thi[ (CH2) + γ(ring)]——— 925
Thi[ (ring) + (CS)] and/or Pip skeletal stretching——881887—
Arg[δ(NH)], Thi[δ(ring)  +  ν(CC)], and/or Pip ν(CC)840850—840—
Pip ring breathing, Arg[ (NH2)], and/or Thi[ν(CC) + δ(ring)]—812833 839
Pip[ring breathing]—776763763752
Pro[ (CH2)ring]765—— —
Pip—723—729725
Pip——717 700
Thi[ (CH)] and/or Arg [δ(COO−)]681678671682670
(COO) and/or Amide——652——
Phe[ ]620————
Pip—612—594—
Thi[ (ring) + (CH2)]——568——
(CO) and/or (CH2)—538—534—
Pip—499———
Skeletal467—464—457
Thi[ (ring)]——426——
ν: stretching, δ: deformation, γ: torsion, : twisting, : bending : rocking, : wagging, and : scissoring vibrations; Phe: phenylalanine, Arg: arginine, Thi: L-thienylalanine, Aaa: 1-adamantaneacetic acid, and Pip: L-pipecolic acid.