Single‐Molecule Nanomaterials from π‐Stacked Side‐Chain Conjugated Polymers

Naphthalene-based oligothiophene-stacked polymers

“…Poly(dibenzofulvene)s, 4-11 7,7-diarylnorbornane-containing conjugated polymers, 12,13 cyclophanecontaining polymers and face-to-face ferrocene polymers [36][37][38] have been synthesized, and their optical and electrochemical properties have been studied in detail. Polymers with layered aromatic rings and p-electron systems have also been investigated; [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53] for example, Chen et al 53 recently reported the synthesis and formation of a twodimensional assembly of polymeric ladder phanes containing face-toface p-electron systems. These polymers have potential applications in optoelectronic devices and single-molecular devices such as singlemolecular wires.…”

Xanthene‐Based Oligothiophene‐Layered Polymers

“…R f ¼ 0.5 (hexane:CHCl 3 , 2:1 v:v 5,5 0 -Bis(2-methoxyphenyl)-2,2 00 -bithiophene (10) 5,5 0 -Dibromo-2,2 0 -bithiophene (8) (0.32 g, 1.0 mmol), 2-methoxyphenylboronic acid (9) (0.34 g, 2.3 mmol), Pd(PPh 3 ) 4 (58 mg, 0.050 mmol), trioctylmethylammonium chloride (ca. 0.4 g, ca.…”

“…[6] Despite the importance of the layered structures of p-electron systems in materials and nature, the synthesis of the polymers comprising layered aromatic rings has rarely been carried out in the field of synthetic polymer chemistry. Poly-(dibenzofulvene)s, [7] poly(benzofulvene)s, [8,9] p-stacked side-chain conjugated polymers, [10] 7,7-diarylnorbornanecontaining conjugated polymers, [11] cyclophane-containing through-space conjugated polymers [12][13][14][15] and face-toface ferrocene polymers, [16] which consist of layered and stacked p-electron systems, have thus far been synthesized.…”

“…[20] These p-stacked polymers and p-electron-system-layered polymers exhibited intriguing properties such as hole mobility, [7a,d] conductivity, [12] charge delocalization, [7a,g] energy transfer, [13b,c] photoluminescence [13a-c] and electroluminescence. [10] We have developed a method for constructing layered structures in a single polymer chain using xanthene as a scaffold. [17] Various p-electron systems, such as [2.2]paracyclophane, [17a-d] oligophenylene, [17e] carbazole, [17f] oligothiophene [17g] and anthracene [17h] have been layered in the polymer backbones.…”

Synthesis of Oligothiophene‐Layered Polymers

“…However, few studies have focused on the synthesis of through-space conjugated polymers comprising layered p-electron systems in a single polymer chain. [4][5][6][7][8][9][10][11][12] From this viewpoint, we have recently reported the synthesis of p-stacked polymers comprising layered p-electron systems and described their properties. These polymers were synthesized by incorporating [2.2]paracyclophane into the conjugated polymer main chain.…”