Graphene performs the role of an electron donor in covalently interfaced porphyrin-boron azadipyrromethene dyads and manages photoinduced charge-transfer processes

Cantón-Vitoria, Rubén; Alsaleh, Ajyal Z.; Rotas, Georgios; Nakanishi, Yusuke; Shinohara, Hisanori; D’Souza, Francis; Tagmatarchis, Nikos

doi:10.1039/d2nr03740h

Cited by 2 publications

(1 citation statement)

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“…Addition of zinc was carried out by a modified methodology described in the bibliography. , Free-porphyrin 2b was dissolved in 10 mL DCM. Drop a solution of ZnO(Ac) 2 ·H 2 O (10 equiv) of 10 mL of MeOH under stirring.…”

Section: Methodsmentioning

confidence: 99%

Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS₂ and WS₂

et al. 2023

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We successfully functionalized MoS2 and WS2 with Zn-porphyrin through 1,2-dithiolane addition. This creates mixed 0–2 dimensional materials since porphyrins are discrete on the basal plane of TMDs. This localization results in a new emission band with a 3.5 ns lifetime at 77.5 K with an excitation power of 17 W/cm2 in the near-infrared (NIR) region (1.40–1.51 eV), which originates from charge-separated states between ZnP and WS2. The optical response of excitonic species, including trion, biexcitons, and excitons, is substantially enhanced at the porphyrin absorption region, supporting electron transfer between ZnP and WS2. Sensing time-response improves after functionalization, suggesting that electrons injected from ZnP to TMDs contribute to filling trap states. Incorporating ZnP also enhances the stability of WS2 and MoS2 against atmospheric photodegradation. Theoretical modeling supports these findings, suggesting an intimate relationship between orbitals in the ground and excited states of porphyrin and TMDs.

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Section: Methodsmentioning

confidence: 99%

Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS₂ and WS₂

et al. 2023

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Mini-Review on Catalytic Hydrogen Evolution from Porphyrin–Graphene Structures

Nikoloudakis,

Coutsolelos,

Stratakis

2024

Energy Fuels

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Porphyrin-based derivatives have been extensively investigated in photocatalytic, electrocatalytic, and photoelectrocatalytic H 2 production systems as both photosensitizers and catalysts. Recently, their combination with two-dimensional materials, such as graphene oxide, reduced graphene oxide, and graphene quantum dots, has attracted significant attention for hydrogen evolution due to the advanced electronic properties, good stability, and low-cost fabrication of these materials. This mini-review summarizes the recent developments concerning the application of porphyrin−graphene ensembles in catalytic H 2 generation. Current challenges concerning this application are discussed, and future perspectives are also proposed.

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Graphene performs the role of an electron donor in covalently interfaced porphyrin-boron azadipyrromethene dyads and manages photoinduced charge-transfer processes

Abstract: Herein, we introduced the versatility of free-base and zinc-metallated porphyrin (H2P and ZnP, respectively) to combine with boron azadipyrromethene (azaBDP) NIR absorbing species, for extending their photophysical interest and covalently...

Cited by 2 publications

References 40 publications

Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS₂ and WS₂

Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS₂ and WS₂

Mini-Review on Catalytic Hydrogen Evolution from Porphyrin–Graphene Structures

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Graphene performs the role of an electron donor in covalently interfaced porphyrin-boron azadipyrromethene dyads and manages photoinduced charge-transfer processes

Abstract: Herein, we introduced the versatility of free-base and zinc-metallated porphyrin (H2P and ZnP, respectively) to combine with boron azadipyrromethene (azaBDP) NIR absorbing species, for extending their photophysical interest and covalently...

Cited by 2 publications

References 40 publications

Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS2 and WS2

Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS2 and WS2

Mini-Review on Catalytic Hydrogen Evolution from Porphyrin–Graphene Structures

Contact Info

Product

Resources

About

Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS₂ and WS₂

Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS₂ and WS₂