Blue electroluminescence enhancement of poly{2,7-(9,9′- dioctylfluorene)-co-4-diphenylamino-4′-bipenylmethylsulfide} incorporating side-chain-tethered gold nanoparticles

So Lin Hsu*, Chia Hung Chou, Chen Ping Chen, Kung-Hwa Wei

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Through in situ reduction of a gold precursor, we have tethered gold nanoparticles (Au NPs) to the side chains of poly(2.7-(9,9′- dioctylfluorene)-co-4-diphenylamino-4′-bipenylmethylsulfide} (PF-DBMS) through its ArSCH 3 anchor groups. The presence of 1 wt % of the tethered Au NPs led to a reduction in the degree of aggregation of the polymer chains, resulting in a 50 % increase in its quantum yield. The electroluminescence of a 1 wt % Au/PF-DBMS device was almost four times higher in terms of its maximum brightness and its full-width-at-half-maximum emission peak was much narrower than that of a pure PF-DBMS device; the presence of a small amount of Au NPs significantly enhances the electron injection and transport and suppresses the photo-oxidation of PF-DBMS.

Original languageEnglish
Pages (from-to)2534-2541
Number of pages8
JournalAdvanced Functional Materials
Volume17
Issue number14
DOIs
StatePublished - 24 Sep 2007

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