Surface-enhanced Raman effect in ultra-thin CuPc films employing periodic silver nanostructures
Source abstract
Abstract
In order to investigate the interaction of organic molecules with metals by means of Raman spectroscopy, special substrates were designed which combine interference and surface-enhancement mechanisms. Triangular shaped silver nanostructures with an angle bisector and a height of about 80 nm were prepared by nanosphere lithography on silicon substrates with a 100-nm oxide layer. Utilizing these substrates the dependence of the Raman signal intensity on the thickness of copper phthalocyanine (CuPc) was studied in the range from few percentages of a monolayer coverage up to 80 nm using an in situ setup. At an excitation in resonance with the plasmons of the nanostructures (2.6 eV) an increase of the signal was observed during film growth. Contrary to that, excitation at 1.92 eV in resonance with the CuPc absorption band leads to a strongly enhanced Raman signal for submonolayer coverage which hardly changes with the CuPc film thickness in the ultra-low coverage regime.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Copper-based nanomaterials and applications · nanoparticles nucleation surface interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
1. Alessio P, De Saja Saez JA, Aroca RF, Constantino CJL (2011) Metal-organic semiconductor nanostructures for surface-enhanced Raman scattering. Appl Spectrosc 65:152–158. doi: 10.1366/10-0610110.1366/10-06101 ↗
2. Aroca R, Jennings C, Kovacs GJ, Loutfy RO, Vincett PS (1985) Surface-enhanced Raman scattering of Langmuir-Blodgett monolayers of phthalocyanine by indium and silver island films. J Phys Chem 89:4051–4054. doi: 10.1021/j100265a02510.1021/j100265a025 ↗
3. Aroca R, Clavijo RE, Jennings CA, Kovacs GJ, Duff IJM, Loutfy RO (1989) Vibrational spectra of lutetium and ytterbium bis-phthalocyanine in thin solid films and SER(R)S on silver island films. Spectrochimica Acta 5:957–962. doi: 10.1016/0584-8539(89)80154-010.1016/0584-8539(89)80154-0 ↗
4. Banholzer MJ, Millstone JE, Qin L, Mirkin CA (2008) Rationally designed nanostructures for surface-enhanced Raman spectroscopy. Chem Soc Rev 37:885–897. doi: 10.1039/B710915F10.1039/b710915f ↗
5. Chen Q, Gu D, Shu J, Tang X, Gan F (1994) Optical and recording properties of copper phthalocyanine films. Mater Science nd Eng B 25:171–174. doi: 10.1016/0921-5107(94)90220-810.1016/0921-5107(94)90220-8 ↗
6. Chizhov I, Scoles G, Kahn A (2000) The influence of steps on the orientation of Copper Phthalocyanine monolayers on Au(111). Langmuir 16:4358–4361. doi: 10.1021/la991622510.1021/la9916225 ↗
7. Corio P, Rubim JC, Aroca R (1998) Contribution of the Herzberg-Teller mechanism to the surface-enhanced Raman scattering of Iron Phthalocyanine adsorbed on a Silver electrode. Langmuir 14:4162–4168. doi: 10.1021/la980062r10.1021/la980062r ↗
8. Etchegoin PG, Le Ru EC (2008) A perspective on single molecule SERS: current status and future challenges. Phys Chem Chem Phys 10:6079–6089. doi: 10.1039/b809196j10.1039/b809196j ↗
9. Gordan OD, Friedrich M, Zahn DRT (2004) The anisotropic dielectric function for copper phthalocyanine thin films. Organic Electronics 5:291–297. doi: 10.1016/j.orgel.2004.10.00110.1016/j.orgel.2004.10.001 ↗
10. Haynes CL, Van Duyne RP (2001) Nanosphere lithography: a versatile nanofabrication tool for studies of size-dependent nanoparticle optics. J Phys Chem B 105:5599–5611. doi: 10.1021/jp010657m10.1021/jp010657m ↗
11. Haynes CL, Yonzon CR, Zhang X, Van Duyne RP (2005) Surface-enhanced Raman sensors: early history and the development of sensors for quantitative biowarfare agent and glucose detection. J Raman Spectrosc 36:471–484. doi: 10.1002/jrs.137610.1002/jrs.1376 ↗
12. Kelly KL, Coronado E, Zhao LL, Schatz GC (2003) The optical properties of metal nanoparticles: the influence of size, shape, and dielectric environment. J Phys Chem B 107:668–677. doi: 10.1021/jp026731y10.1021/jp026731y ↗
13. Killian MM, Villa-Aleman E, Sun Z, Crittenden S, Leverette CL (2011) Dependence of surface-enhanced infrared absorption (SEIRA) enhancement and spectral quality on the choice of underlying substrate: a closer look at Silver (Ag) films prepared by physical vapor deposition (PVD). Appl Spectrosc 65:272–283. doi: 10.1366/10-0617610.1366/10-06176 ↗
14. Kovacs GJ, Loutfy RO, Vincett PS, Jennings C, Aroca R (1986) Distance dependence of SERS enhancement factor from Langmuir-Blodgett monolayers on metal island films: evidence for the electromagnetic mechanism. Langmuir 2:689–694. doi: 10.1021/la00072a00110.1021/la00072a001 ↗
15. Merlen A, Gadenne V, Romann J, Chevallier V, Patrone L, Valmalette JC (2009) Surface enhanced Raman spectroscopy of organic molecules deposited on gold sputtered substrates. Nanotechnol 20:215705. doi: 10.1088/0957-4484/20/21/21570510.1088/0957-4484/20/21/215705 ↗
16. Min Q, Pang Y, Collins DJ, Kuklev NA, Gottselig K, Steuerman DW, Gordon R (2011) Substrate-based platform for boosting the surface-enhanced Raman of plasmonic nanoparticles. Opt. Express 19:1648–1655. doi: 10.1364/OE.19.00164810.1364/OE.19.001648 ↗
17. Mrozek I, Otto A (1989) SERS—a long-range effect. Appl Phys A 49:389–191. doi: 10.1007/BF0061502110.1007/BF00615021 ↗
18. Nemanich RJ, Tsai CC, Connell GAN (1980) Interference-enhanced Raman scattering of very thin Titanium and Titanium oxide films. Phys Rev Lett 44:273–276. doi: 10.1103/PhysRevLett.44.27310.1103/PhysRevLett.44.273 ↗
19. Schäfer P, Himcinschi C, Chis V, Zahn DRT (2010) In situ Raman growth monitoring of indium/copper phthalocyanine interfaces. Phys. Status Solidi C 7:232–235. doi: 10.1002/pssc.20098248410.1002/pssc.200982484 ↗
20. Shoute LCT, Bergren AJ, Mahmoud AM, Harris KD, McCreery RL (2009) Optical interference effects in the design of substrates for surface-enhanced Raman spectroscopy. Appl Spectrosc 63:133–140. doi: 10.1366/00037020978739210210.1366/000370209787392102 ↗
21. Smardzewski RR, Colton RJ, Murday JS (1979) enhanced Raman scattering by pyridine physisorbed on a clean silver surface in ultra-high vacuum. Chem Phys Lett 68:53–57. doi: 10.1016/0009-2614(79)80067-610.1016/0009-2614(79)80067-6 ↗
22. Sönnichsen C, Franzl T, Wilk T, von Plessen G, Feldmann J, Wilson O, Mulvaney P (2002) Drastic reduction of plasmon damping in Gold nanorods. Phys Rev Lett 88:077402. doi: 10.1103/PhysRevLett.88.07740210.1103/PhysRevLett.88.077402 ↗
23. Stenzel O, Stendal A, Roder M, Wilbrandt S, Drews D, Werninghaus T, von Borczyskowski C, Zahn DRT (1998) Localized plasmon excitation in metal nanoclusters as a tool to study thickness-dependent optical properties of copper phthalocyanine ultrathin films. Nanotechnol 9:6–19. doi: 10.1088/0957-4484/9/1/00210.1088/0957-4484/9/1/002 ↗
24. Otto A, Mrozek I, Grabhorn H, Akemann W (1992) Surface-enhanced Raman scattering. J Phys: Condens Matter 4:1143–1212. doi: 10.1088/0953-8984/4/5/00110.1088/0953-8984/4/5/001 ↗
25. Wagner V, Drews D, Esser N, Zahn DRT, Geurts J, Richter W (1994) Raman monitoring of semiconductor growth. J Appl Phys 75:7330–7333. doi: 10.1063/1.35664410.1063/1.356644 ↗
26. Wang H, Tam F, Grady NK, Halas NJ (2005) Cu nanoshells: effects of interband transitions on the nanoparticle plasmon resonance. J Phys Chem B Lett 109:18218–18222. doi: 10.1021/jp053863t10.1021/jp053863t ↗
27. Zeman EJ, Carron KT, Schatz GC, Van Duyne RP (1987) A surface enhanced resonance Raman study of cobalt phthalocyanine on rough Ag films: Theory and experiment. J Chem Phys 87:4189–4200. doi: 10.1063/1.45292310.1063/1.452923 ↗