87809 20200218165903.0 doi 10.1021/jacs.8b09204 sideral 108374 ART-2018-108374 eng Vallan, L. Interfacing Transition Metal Dichalcogenides with Carbon Nanodots for Managing Photoinduced Energy and Charge-Transfer Processes 2018 Access copy available to the general public Unrestricted Exfoliated semiconducting MoS2 and WS2 were covalently functionalized with 1, 2-dithiolane-modified carbon nanodots (CNDs). The newly synthesized CND-MoS2 and CND-WS2 hybrids were characterized by spectroscopic, thermal, and electron microscopy imaging methods. Based on electronic absorption and fluorescence emission spectroscopy, modulation of the optoelectronic properties of TMDs by interfacing with CNDs was accomplished. Electrochemical studies revealed facile oxidation of MoS2 over WS2 in the examined hybrids, suggesting it to be better electron donor. Excited state events, investigated by femtosecond transient absorption spectroscopic studies, revealed ultrafast energy transfer from photoexcited CNDs to both MoS2 and WS2. Interestingly, upon MoS2 photoexcitation, charge transfer from an exciton dissociation path of MoS2 to CNDs, within CND-MoS2, was observed. However, such a process in CND-WS2 was found to be absent due to energetic reasons. The present study highlights the importance of TMD-derived donor-acceptor hybrids in light energy harvesting and optoelectronic applications. Furthermore, the fundamental information obtained from the current results will benefit design strategies and impact the additional TMD-based hybrid materials to efficiently manage and perform in electron-transfer processes. development of additional TMD-based hybrid materials to efficiently manage and perform in electron-transfer processes. info:eu-repo/grantAgreement/ES/DGA/T03-17R info:eu-repo/grantAgreement/EC/H2020/642742/EU/Graphene-based nanomaterials for touchscreen technologies: Comprehension, Commerce and Communication/Enabling Excellence This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 642742-Enabling Excellence info:eu-repo/grantAgreement/EC/H2020/785219/EU/Graphene Flagship Core Project 2/GrapheneCore2 This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 785219-GrapheneCore2 info:eu-repo/grantAgreement/ES/MINECO-FEDER/ENE2016-79282-C5-1-R info:eu-repo/grantAgreement/ES/MINECO/MAT2016-79776-P info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 14.695 2018 CHEMISTRY, MULTIDISCIPLINARY 12 / 172 = 0.07 2018 Q1 T1 7.468 2018 Biochemistry 2018 Q1 Colloid and Surface Chemistry 2018 Q1 Chemistry (miscellaneous) 2018 Q1 Catalysis 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Canton-Vitoria, R. Gobeze, H.B. Jang, Y. (orcid)0000-0002-2071-9093 Arenal, R. Universidad de Zaragoza Benito, A.M. Maser, W.K. D''Souza, F. Tagmatarchis, N. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 140, 41 (2018), 13488-13496 J. Am. Chem. Soc. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 0002-7863 793385 http://zaguan.unizar.es/record/87809/files/texto_completo.pdf Postprint 584765 http://zaguan.unizar.es/record/87809/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:87809 articulos driver 2020-02-18-15:38:22 ARTICLE