Synthesis and properties of folded π-stacking polymers having J-aggregative, alternative, and staggered assembling structures

Abstract Three types of folded polymers showing alternative stacking of two different π-units (A- 3 ), J -aggregate (J- 3 ), and staggered stacking (S- 3 ) structures of π-modules were designed and synthesized using 2-substituted 1,3-diaryl tethering units. The UV-absorbing and fluorescent emission properties of these polymers were investigated and compared to those of the corresponding single structural π-molecule component and H -type stacking polymer (H- 3 ). These three types of polymers exhibited unique optical properties as a result of a distinctive arrangement of π-units.