摘要：We determined the optimum dispersant to separate bulk Nb 2 Se 9 material into 1D chain units. The Nb 2 Se 9 , which had a negative zeta potential (-43.3 mV), showed acidic characteristics and strongly bonded with the amine head of octadecyl amine through a charge transfer (from the amine to Se atoms) reaction. The steric hindrance of the octadecyl tail resulted in excellent dispersion of Nb 2 Se 9 (down to nanometre-sized mono-chains).
