We studied the optimum dispersion solvent for bulk V₂Se₉ material, which can be used as a new one-dimensional (1D) material, to separate into 1D chain units. Selected twelve solvents, which have different dielectric constants and surface tensions, were tested to exfoliate bulk V₂Se₉ into nano-scale chains. The atomic level (∼1 nm, mono-chain) exfoliation of V₂Se₉ was performed using acetone as the solvent. The dispersion concentration was high in solvents having medium dielectric constants ranging from 20 to 40 with surface tensions ranging from 25 to 35 mJ m⁻². This result is similar to the dispersion results of previous transition metal dichalcogenides (TMDCs) such as MoS₂, WS₂, MoSe₂, MoTe₂, TaSe₂, NbSe₂, and NiTe₂, indicating that the V₂Se₉ material and its dispersion to 1D units can be expected to play an important role in opening opportunities for new low-dimensional material studies.

中文翻译：

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液体剥离法从棒状块状 V2Se9 晶体中分离无机分子链

_{我们研究了散装V 2} Se ₉材料的最佳分散溶剂，该材料可作为一种新的一维（1D）材料分离成一维链单元。测试了选择的十二种具有不同介电常数和表面张力的溶剂，以将块状 V ₂ Se ₉剥离成纳米级链。使用丙酮作为溶剂进行V ₂ Se ₉的原子级（~1 nm，单链）剥离。在具有 20 至 40 的中等介电常数和 25 至 35 mJ m ^{-2的表面张力的溶剂中，分散体浓度很高}. _{该结果与以往的MoS 2}、WS ₂、MoSe ₂、MoTe ₂、TaSe ₂、NbSe ₂、 NiTe ₂等过渡金属二硫属化物（TMDCs）的色散结果相似，表明V ₂ Se ₉材料及其预计分散到一维单位将在开辟新的低维材料研究机会方面发挥重要作用。