However, the controversial introduction of the diagonal in a certain member's work alienated the movement's best known artist, who afterwards stopped contributing to the journal in which he had argued for "equilibration" between opposites realized through the interplay of positive and negative space and asymmetrical balance of rectilinear elements, which he referred to as Neoplasticism.  
Gernit Rietveld's red/blue armchair and Schroder House are some of the most noted designs of this movement.  However, the controversial introduction of the diagonal in a certain member's work alienated the movement's best known artist, who afterwards stopped contributing to the journal in which he had argued for "equilibration" between opposites realized through the interplay of positive and negative space and asymmetrical balance of rectilinear elements, which he referred to as Neoplasticism.  Founded by Theo van Doesburg , this FTP, what modern art movements characterized by bold black lines and blocks of primary color, most commonly associated with Piet Mondrian.
Gernit Rietveld's red/blue armchair and Schroder House are some of the most noted designs of this movement.  
De Stijl (prompt on Neoplasticism)