The H-bonding attraction usage expands the scope of the assembly technique because it is possible to fabricate the ultrathin films in organic solvents.

这种基于氢键的自组装使得许多不溶于水的高分子能够在有机溶剂中形成超薄膜，拓宽了自组装超薄膜制备的研究领域。

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So what we'll have here is a trigonal planar case, and you can see that we only have three electrons that are set for bonding, so we'll add three hydrogens, and for b h 3, we'll get a stable structure here.

让电子劲量远离的时候，不用考虑它,这个例子是平面三角形，你可以看到，只有3个电子可以成键。

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