Durability improvements of two-dimensional metal nanoparticle sheets by molecular cross-linked structures between nanoparticles. (6th February 2018)

• Record Type: Journal Article
• Authors: Saito, Noboru; Ryuzaki, Sou; Wang, Pangpang; Park, Susie; Sakai, Nobuyuki; Tatsuma, Tetsu; Okamoto, Koichi; Tamada, Kaoru
• Is Part Of: Japanese journal of applied physics. Volume 57:Number 3(2018)Supplement 2
• Publication Date: 2018-02-06
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.57.03EG10
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: The durability of two-dimensional metal nanoparticle sheets is a crucial factor for realizing next-generation optoelectronic devices based on plasmonics such as organic light-emitting diodes. Here, we report improvements in the durability of Ag nanoparticle sheets by forming alkanedithiol (DT16) cross-linked structures between the nanoparticles. The cross-linked structures in a sheet were fabricated by the self-assembly of DT16-capped Ag nanoparticles with 10% coverage (AgDT16). The durabilities for thermal, organic solvent, and oxidation reactions of AgDT16 sheets were found to be improved owing to the cross-linked structures by comparing Ag nanoparticle sheets without the cross-linked structures. The absorbance spectra revealed that the Ag nanoparticle sheets without the structure are markedly damaged by each durability test, whereas the AgDT16 sheets remain. The molecular cross-linked structures between nanoparticles in two-dimansional metal nanoparticle sheets were found to have the potential to play a key role in the realization of plasmonic optoelectronic devices including metal nanoparticles.