From Ag2S to luminescent Ag–In–S nanocrystalsviaan ultrasonic method – anin situsynthesis study in an NMR tube

Patrycja Kowalik , Mateusz Penkala , Piotr Bujak , Angelika Kmita , Marta Gajewska , Andrzej Ostrowski , Aneta Slodek , Adam Proń


Starting from simple metal precursors (AgNO3 and InCl3), ligands (oleylamine (OLA) and 1-dodecanethiol (DDT)) and popular sulfur precursor S/OLA, we have developed a new method for the preparation of colloidal Ag2S nanocrystals and highly luminescent ternary AgInS2 nanocrystals. The significant advantage of this method is that the nanocrystals can be prepared at room temperature in an ultrasonic bath, without the need for an inert gas atmosphere. In particular, using this method, it was possible to perform the synthesis of the studied nanocrystals in an NMR tube providing direct analytical access to chemical transformations occurring in the reaction mixture during the nanocrystal synthesis. Detailed analysis of the evolution of NMR signals originating from ligands (OLA and DDT) enabled us to identify the nucleation and growth stages as well as the stabilization stage of the nanocrystal formation i.e. the stage in which the ligands were permanently attached to the nanocrystal surface. We also demonstrated that under the analyzed conditions, the reactivities of silver and indium precursors resulting in appropriate cation-to-ligand connections (Ag+–DDT and In3+–OLA) were crucial for the nucleation of ternary AgInS2 nanocrystals exhibiting intense red luminescence.
Author Patrycja Kowalik (FC / CPCT)
Patrycja Kowalik,,
- Chair Of Polymer Chemistry And Technology
, Mateusz Penkala - [University of Silesia (UŚ)]
Mateusz Penkala,,
- Uniwersytet Śląski w Katowicach
, Piotr Bujak (FC / CPCT)
Piotr Bujak,,
- Chair Of Polymer Chemistry And Technology
, Angelika Kmita - AGH University of Science and Technology (AGH)
Angelika Kmita,,
, Marta Gajewska - AGH University of Science and Technology (AGH)
Marta Gajewska,,
, Andrzej Ostrowski (FC / CofIC)
Andrzej Ostrowski,,
- Chair Of Inorganic Chemistry
, Aneta Slodek - Faculty of Chemistry (WChUW) [University of Warsaw (UW)]
Aneta Slodek,,
, Adam Proń (FC / CPCT)
Adam Proń,,
- Chair Of Polymer Chemistry And Technology
Journal seriesJournal of Materials Chemistry C, ISSN 2050-7526, e-ISSN 2050-7534
Issue year2020
Publication size in sheets0.5
ASJC Classification1600 General Chemistry; 2505 Materials Chemistry
Languageen angielski
d0tc01880e.pdf 4.46 MB
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 05-08-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.321; WoS Impact Factor: 2018 = 6.641 (2) - 2018=5.941 (5)
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