Synthesis and properties of through-space conjugated polymers based on π-π stacked 1,3-biarylpropane tethering units

Formation of Two‐Dimensional Supramolecular Polymers by Amphiphilic Pyrene Oligomers

“…Control of the precise arrangement of chromophores into dimensionally and morphologically defined shapes is a key aspect in the development of optoelectronic devices. [9][10][11][12][13][14][15][16][17] Close spatial proximity and in-plane alignment of chromophores in 2D structural motifs [18][19][20][21][22][23][24][25][26][27] often results in distinct electronic interactions between the partners [28][29][30][31][32][33][34][35][36] leading to charge separation and transport, directional energy transfer, new optical and photophysical properties not observed in the separate molecules. [37][38][39][40][41][42][43][44][45][46] Moreover, spectroscopic changes often provide valuable information about the relative orientation of adjacent chromophores in a given environment.…”

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

“…With the aim to compare the properties of A-3, J-3, and S-3 polymers with their corresponding H-stacking counterparts, homo polymers H-3A, H-3B, and H-3C were prepared by reacting 1a [10] with the corresponding diboronate 2a, 2b, or 2c, respectively (Scheme 5). Ether tethered polymer H-3D was also prepared from 1b [11] and 6a by Williamson etheration.…”

“…Based on these results, we synthesized polymers composed of 2-substituted 1,3-phenylpropane and p-modules. We found that these polymers spontaneously fold to the p-stacking V conformer; this configuration being favored over the linear stretched form IV both in solution and film state (Equation (2) in Scheme 1) [9,10].…”

Synthesis and Structure of Optically Active Oligo(N‐substituted‐m‐benzamide)s Bearing a Bithiophene Chromophore on the Benzene Ring

“…Okamoto et al. have clarified that the 2‐substituted trimethylene tether enables a folding H‐stacking of π‐conjugated oligomers in polar solvents and film . These examples tell us that the development of novel scaffold is a straightforward approach for controlling the aggregation structure of π‐conjugated molecules.…”