Synthesis and Characterization of Conjugated, n-Dopable, Bithiazole-Containing Polymers

Abstract

Three polymers, poly(4,4′-dinonyl-5,5′-bithiazole-2,2′-diyl-co-5-tert-butylphenylene-1,3-diyl) (PBBNBT), poly(4,4′-bis(p-dodecylphenyl)-2,2′-bithiazole-5,5′-diyl) (PDPBT), and poly(4,4′-dinonyl-2,2′-bithiazole-5,5′-diyl-co-ethynylene) (PENBT), have been synthesized. These polymers illustrate the ability to tune polymer properties around a specific chromophore, in this case the bithiazole ring system. Alterations of optical properties and solid-state morphology have been made while the electrochemical behavior characteristic of the bithiazoles, i.e., reversible reduction near -2.0 V and n-dopability resulting in conductivities around 10 2 S/cm, has been maintained. All three polymers have also been used as the emitting layer in polymer-based LEDs.

Prognostic role of pregnancy occurring before or after treatment of early breast cancer patients aged <35 years

“…Bithiazole (BTz) with two thiazole rings connected together have also been used as acceptor unit to copolymerize with the donor unit. Therefore, π‐conjugated polymers incorporating with bithiazole moieties have been demonstrated to be as new n‐type transporting materials 36–43. Obviously, bithiazole unit is simple in structure in comparison with other acceptor units such as benzothiadiazole etc.…”

Voltammetric, EQCM, and in situ conductance studies of p- and n-dopable polymers based on ethylenedioxythiophene and bithiazole

“…The stacking of the bithiazole ring along the conjugated backbone could give rise to -interaction in the side group and lead to interesting optical and transport phenomena. Alkyl bithiazole oligomers crystallize with a "staircase" -stack motif and may be reversibly n-doped [24][25][26][27][28][29][30][31][32][33][34][35][36][37].…”

Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

“…Recently, considerable research effort has focused on stacking of p-conjugated polymers [14][15][16][17][18][19][20][21]. Polymers with a structure of the repeating five membered heteroatomic rings readily constitute stacked structure.…”