期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 13, 页码 7436-7443出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202014314
关键词
carbon nitride; K-PHI; long-lived radicals; PEDOT; semiconductors
资金
- Max Planck Society
Photocatalysis involves converting small organic molecules into desired products using light responsive materials, electromagnetic radiation, and electron mediators. Substituting low molecular weight reagents with redox active functional materials can expand the utility of photocatalysis beyond organic synthesis and environmental applications. Designing hybrid nanocomposites as the base allows reversible modulation of electrical conductivity and study of photocatalytic processes mediated by semiconducting photocatalysts through electrical conductivity measurements.
In photocatalysis, small organic molecules are converted into desired products using light responsive materials, electromagnetic radiation, and electron mediators. Substitution of low molecular weight reagents with redox active functional materials may increase the utility of photocatalysis beyond organic synthesis and environmental applications. Guided by the general principles of photocatalysis, we design hybrid nanocomposites composed of n-type semiconducting potassium poly(heptazine imide) (K-PHI), and p-type conducting poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as the redox active substrate. Electrical conductivity of the hybrid nanocomposite, possessing optimal K-PHI content, is reversibly modulated combining a series of external stimuli ranging from visible light under inert conditions and to dark conditions under an O-2 atmosphere. Using a conductive polymer as the redox active substrate allows study of the photocatalytic processes mediated by semiconducting photocatalysts through electrical conductivity measurements.
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