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Zinc phthalocyanine carrying sulfenyl and sulfydryl functionalized sulfur vacancies MoS2 for enhancement of the third order nonlinear optical property
- Source :
- Dyes and Pigments. 198:109986
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- Zinc phthalocyanine carrying sulfenyl and 6-sulfydryl linkers was firstly used to functionalize with sulfur vacancies MoS2. The synthesized MoS2/ZnPc composite was further prepared to be PVA (polyvinyl alcohol) thin films by a drop coating method. The microscopic structures and photophysical properties of novel MoS2/ZnPc composite were characterized. A series of analysis results indicate that zinc phthalocyanine with sulfenyl and 6-sulfydryl linkers is loaded to sulfur vacancies of MoS2 by ligand conjugation. The third order nonlinear optical properties of MoS2/ZnPc composite were studied by an open aperture Z-scan technique at 532 nm with 4 ns laser pulses width. In comparison with individual MoS2 or ZnPc, whether MoS2/ZnPc solution or MoS2/ZnPc/PVA film sample possesses larger third order nonlinear absorption coefficients (β) and lower limiting thresholds (F50). It can be ascribed to a combination of different NLO absorption mechanisms for MoS2/ZnPc composite, including one-photon absorption, two photon absorptions and nonlinear scattering of MoS2, triplet excited state absorption of ZnPc, nonlinear scattering of MoS2/ZnPc and the photo-induced electron transfer or energy transfer (PET/ET) process between MoS2 and ZnPc moieties.
- Subjects :
- Materials science
Ligand
Process Chemistry and Technology
General Chemical Engineering
Composite number
chemistry.chemical_element
engineering.material
Photochemistry
Sulfur
Polyvinyl alcohol
chemistry.chemical_compound
Electron transfer
Coating
chemistry
engineering
Thin film
Absorption (chemistry)
Subjects
Details
- ISSN :
- 01437208
- Volume :
- 198
- Database :
- OpenAIRE
- Journal :
- Dyes and Pigments
- Accession number :
- edsair.doi...........009db612a3a2b4f266274baa71854ae0