A versatile controlled-release method was developed for the in situ growth of graphdiyne on arbitrary substrates. Cu2+-Ions escaped from the polyvinylpyrrolidone/copper acetate film on the surface of various substrates (e.g. SiO2, ZnO, Al, etc.), acting as the catalyst for the acetylenic coupling reaction.
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Zhao et al. (2018) studied this question.
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