首页|N18 ring:A building block for constructing 1D and 2D polymeric nitrogen frameworks
N18 ring:A building block for constructing 1D and 2D polymeric nitrogen frameworks
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N18 ring:A building block for constructing 1D and 2D polymeric nitrogen frameworks
Exploring the fundamental building block is essential for constructing functional materials with extended topological configurations.In the polymeric nitrogen system,no fundamental building blocks have been reported so far.Here,we successfully synthesize the buckled 1-dimensional(1D)band-shaped and 2-dimensional(2D)layered polymeric nitrogen frameworks with N18 ring as a fundamental building block for the first time.Furthermore,the dimensions of the polymeric nitrogen frameworks can be regulated by pressure conditions.Bader charge analyses indicate that the charge transfer from the La atom to the low-order bonded nitrogen atom plays a crucial role in stabilizing these two low-dimensional polymeric frameworks.Both LaN16 and LaN8 are promising high-energy-density materials(HEDMs).This study reveals that the N18 ring can serve as a fundamental building block,analogous to the six-membered ring in carbon-based materials,enabling the construction of novel polymeric nitrogen materials with extended frameworks.
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