Due to the unique double-or multiple-chain structure,Ladder-like polysiloxanes(R-LPSs)have shown much higher resistance to heat,oxidation and radiation than the corresponding single-chain polysiloxanes.Since the first report in1960 sby Brown,R-LPS has attracted a lot of attention worldwidely,and great efforts have been made in synthesis novel RLPS and enhance the regularity of the ladder structures since then.With the deepening understanding of the no chemical bonded inter-molecular interaction,the synthesi...