Anchor groups effect on spectroscopic and electrochemical properties of quaternary nanocrystals Cu-In-Zn-S capped with arylamine derivatives

Grzegorz Gąbka , Piotr Bujak , Maciej Gryszel , Kamil Kotwica , Adam Proń

Abstract

A two-step procedure is reported enabling preparation of quaternary Cu-In-Zn-S nanocrystals with electrochemically active ligands consisting of 4-dodecylphenylaminobenzene and amine, thiol, or carboxylic anchor groups. Detailed 1H NMR and IR studies of nanocrystals dispersion as well as free ligands recovered via nanocrystals dissolution indicate that in the organic shell of initial ligands weakly (1-octadecene (ODE)) and more strongly (1-dodecanethiol (DDT) and oleylamine (OLA)) bound ligands coexist. Treating the nanocrystals with pyridine removes weakly bound ligands; however, DDT and OLA molecules remain present as coligands with pyridine. Labile pyridine ligands can then be exchanged for the target 4-dodecylphenylaminobenzene derivatives with different anchor groups. 1H NMR lines of these ligands are broadened due to their restricted rotation; this broadening is especially pronounced for the lines corresponding to the anchor group protons. Electrochemical activity of the ligands is significantly altered after their binding to the nanocrystal surface. Strongly interacting anchor groups such as -Ph-SH or -Ph-CH2NH2 lose their electrochemical activity upon coordination to nanocrystals, and weakly interacting groups (-PhNH2) retain it. Secondary amine -Ph-NH-Ph- remains electrochemically active in all nanocrystals capped with the studied ligands; however, the potential of its oxidation depends on the conjugation with the anchor group. © 2015 American Chemical Society
Author Grzegorz Gąbka (FC / CPCT)
Grzegorz Gąbka,,
- Chair Of Polymer Chemistry And Technology
, Piotr Bujak (FC / CPCT)
Piotr Bujak,,
- Chair Of Polymer Chemistry And Technology
, Maciej Gryszel (FC / CPCT)
Maciej Gryszel,,
- Chair Of Polymer Chemistry And Technology
, Kamil Kotwica (FC / CPCT)
Kamil Kotwica,,
- Chair Of Polymer Chemistry And Technology
, Adam Proń (FC / CPCT)
Adam Proń,,
- Chair Of Polymer Chemistry And Technology
Journal seriesThe Journal of Physical Chemistry Part C: Nanomaterials, Interfaces and Hard Matter, ISSN 1932-7447, (A 35 pkt)
Issue year2015
Vol119
No17
Pages9656-9664
Publication size in sheets0.5
Keywords in EnglishNanocrystals; Pyridine; Zinc; 1-Dodecanethiol; Electrochemical activities; Nanocrystal surface; Organic shells; Pyridine ligands; Restricted rotations; Secondary amines; Two-step procedure
ASJC Classification2508 Surfaces, Coatings and Films; 1606 Physical and Theoretical Chemistry; 2100 General Energy; 2504 Electronic, Optical and Magnetic Materials
DOIDOI:10.1021/acs.jpcc.5b02402
URL http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b02402
Languageen angielski
File
acs%2Ejpcc%2E5b02402.pdf 3.39 MB
Score (nominal)35
ScoreMinisterial score = 35.0, 11-09-2019, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 11-09-2019, ArticleFromJournal
Publication indicators WoS Citations = 9; Scopus Citations = 9; Scopus SNIP (Source Normalised Impact per Paper): 2015 = 1.26; WoS Impact Factor: 2015 = 4.509 (2) - 2015=4.919 (5)
Citation count*11 (2019-10-25)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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