Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Localized Excitons in Zn-Porphyrin Covalently Functionalized MoS2 and WS2
Δημιουργός/Συγγραφέας:	Canton-Vitoria, Ruben Hotta, Takato Tanuma, Yuri Sideri, Ioanna K. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos Ewels, Chris Kitaura, Ryo
Ημερομηνία:	2023
Γλώσσα:	Αγγλικά
ISSN:	1932-7447 1932-7455
DOI:	10.1021/acs.jpcc.2c08009
Περίληψη:	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.
Τίτλος πηγής δημοσίευσης:	The Journal of Physical Chemistry C
Τόμος/Κεφάλαιο:	127
Τεύχος:	22
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Χημική μηχανική[EN] Chemical engineering
Λέξεις-Κλειδιά:	Excitons Functionalization Layers Power Pyrroles
EU Grant identifier:	JP20H02566 JP20H05664 JP21K18930 JP22H05458 JPMJCR16F3 JPMJCR19H4 JPMJPR20A2 P19368 JP19-00207
Κάτοχος πνευματικών δικαιωμάτων:	© 2023 American Chemical Society
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1021/acs.jpcc.2c08009
Σημειώσεις:	This work was supported by JSPS KAKENHI Grant Nos. JP21K18930, JP20H02566, JP22H05458, and JP20H05664, JST CREST Grant Nos. JPMJCR16F3 and JPMJCR19H4, and JST PRESTO Grant No. JPMJPR20A2. This work is also supported by the JSPS postdoctoral fellowship grant agreement no. P19368. Y.T. received support from the Inoue Enryo Memorial Grant of Toyo University and French governmental bursary JP19-00207. Calculations were performed using the Centre de Calculs Intensif Pays de la Loire (CCIPL).
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο