Patterning of Metal Films on Arbitrary Substrates by Using ...
Supporting Information
Patterning of Metal Films on Arbitrary Substrates by Using Polydopamine as a UV-Sensitive Catalytic Layer for Electroless Deposition Lei Zhao, Daqun Chen, and Weihua Hu* Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, China
Figure S1. Cross-section view of copper film deposited on glass.
Figure S2. Optical photographs of large-area patterns of copper films on silicon (a), PET (b), green leaf (c), PDMS (d), and filter membrane (e, mixed cellulose esters membrane).
Figure S3 XRD patterns of PDA-coated glass with deposited gold and silver shown in Fig. 4.
Figure S4. UV-Vis spectra of PDA-coated glass (a) and PDA-coated glass with deposited gold nanoparticles (b) shown in Fig. 4a-d.
Figure S5. High-resolution SEM image of silver film deposited on PDA-coated glass.
Figure S6. XPS survey spectra of PDA film before (a) and after (b) UV irradiation.
Figure S7. SEM image of PDA film on silicon after UV irradiation with a TEM grid as photomask.
Figure S8. Raman spectra of PDA film before (a) and after (b) UV irradiation. Gold nanoparticles attached on APTES-modified glass was used as a Raman enhancement substrate for Raman measurements. The peak at 1092 cm−1 was attributed to the substrate and the broad peak at 1593 cm−1 was assigned to the deformation of aromatic rings in PDA coating. After UV irradiation, the peak at 1593 cm−1 vanished, indicating the UV-induced oxidation of PDA film.
Figure S9. FTIR spectra of polytetrafluoroetylene (PTFE) film (a), PDA-coated PTFE film (b), and PDA-coated PTFE film after UV irradiation (c). We noted that for FTIR characterization, PDA film was deposited on a PTFE film by repeating the 12 h-immersion step for 8 times to obtain a thick PDA film. Accordingly, 60 min UV irradiation was carried out. The peaks at 1599, 1517, 1464, and 1064 cm-1 in spectrum b could be assigned to the PDA film. After UV irradiation, these characteristic peaks disappear in spectrum c, which was in good agreement with spectrum a of filter membrane, suggesting the complete oxidation of PDA film after the UV irradiation.
Patterning of Metal Films on Arbitrary Substrates by Using Polydopamine as a UV-Sensitive Catalytic Layer for Electroless Deposition Lei Zhao, Daqun Chen, and Weihua Hu* Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Southwest University, Chongqing 400715, China
Figure S1. Cross-section view of copper film deposited on glass.
Figure S2. Optical photographs of large-area patterns of copper films on silicon (a), PET (b), green leaf (c), PDMS (d), and filter membrane (e, mixed cellulose esters membrane).
Figure S3 XRD patterns of PDA-coated glass with deposited gold and silver shown in Fig. 4.
Figure S4. UV-Vis spectra of PDA-coated glass (a) and PDA-coated glass with deposited gold nanoparticles (b) shown in Fig. 4a-d.
Figure S5. High-resolution SEM image of silver film deposited on PDA-coated glass.
Figure S6. XPS survey spectra of PDA film before (a) and after (b) UV irradiation.
Figure S7. SEM image of PDA film on silicon after UV irradiation with a TEM grid as photomask.
Figure S8. Raman spectra of PDA film before (a) and after (b) UV irradiation. Gold nanoparticles attached on APTES-modified glass was used as a Raman enhancement substrate for Raman measurements. The peak at 1092 cm−1 was attributed to the substrate and the broad peak at 1593 cm−1 was assigned to the deformation of aromatic rings in PDA coating. After UV irradiation, the peak at 1593 cm−1 vanished, indicating the UV-induced oxidation of PDA film.
Figure S9. FTIR spectra of polytetrafluoroetylene (PTFE) film (a), PDA-coated PTFE film (b), and PDA-coated PTFE film after UV irradiation (c). We noted that for FTIR characterization, PDA film was deposited on a PTFE film by repeating the 12 h-immersion step for 8 times to obtain a thick PDA film. Accordingly, 60 min UV irradiation was carried out. The peaks at 1599, 1517, 1464, and 1064 cm-1 in spectrum b could be assigned to the PDA film. After UV irradiation, these characteristic peaks disappear in spectrum c, which was in good agreement with spectrum a of filter membrane, suggesting the complete oxidation of PDA film after the UV irradiation.
