9 research outputs found
Streptomyces AcH 505 triggers production of a salicylic acid analogue in the fungal pathogen Heterobasidion abietinum that enhances infection of Norway spruce seedlings
From Mesoscopic to Nanoscopic Surface Structures : Lithography with Colloid Monolayers
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Streptomyces AcH 505 triggers production of a salicylic acid analogue in the fungal pathogen Heterobasidion abietinum that enhances infection of Norway spruce seedlings
Xanthocidin Derivatives from the Endophytic Streptomyces sp AcE210 Provide Insight into Xanthocidin Biosynthesis
Facile Optimization of Thermoelectric Properties in PEDOT:PSS Thin Films through Acido-Base and Redox Dedoping Using Readily Available Salts
PolyÂ(ethylene
dioxythiophene):polyÂ(styrenesulfonate) (PEDOT:PSS)
has emerged as a promising candidate for renewable, clean, and reliable
energy generation from waste heat due to its thermoelectric properties.
This largely stems from its tunable and potentially high electrical
conductivity. However, the resulting small Seebeck coefficients diminish
the thermoelectric efficiency. We employ dedoping methods making use
of acido-base and redox dedoping in order to optimize its properties.
In order to tune the charge carrier concentration in PEDOT:PSS thin
films, aqueous solutions of readily available inorganic salts, namely,
sodium hydrogen carbonate (NaHCO<sub>3</sub>), sodium sulfite (Na<sub>2</sub>SO<sub>3</sub>), and sodium borohydride (NaBH<sub>4</sub>),
are introduced in different concentrations into PEDOT:PSS solutions
before thin film fabrication. This yields optimized thermoelectric
properties in terms of power factors up to 100 μW/K<sup>2</sup> m. Changes in the electronic structure are characterized using UV–vis
spectroscopy and XPS, while changes in the conformation are investigated
using Raman spectroscopy. The thermoelectric quantities are compared
for the redox dedopants regarding the absolute number of reducing
equivalents