1357009-91-6Relevant academic research and scientific papers
Fluorescent conjugated polymer nanoparticles and aggregates based on rapid precipitation and self-assembled π-conjugated systems
Godana, Alis Shano,Yu, Chin-Yang
, p. 45 - 51 (2019)
Conjugated copolymers containing fluorene and diphenylamine moieties with octyl and triethylene glycol side chains have been synthesized via Suzuki-Miyaura cross-coupling reaction and their structures have been characterized. Conjugated polymer nanoparticles and self-organization of the polymers have been prepared by rapid precipitation and solvent diffusion methods, respectively. The conjugated polymers exhibited well-defined spherical amorphous structures and crystalline microspheres with a diameter ranging from several nanometer to micrometer. Self-assembled conjugated polymer aggregates were obtained in a selective good solvent/poor solvent mixture. Alternating conjugated polymers are generally difficult to assemble into well-defined spheres due to their rigid and planar backbones, however, alternating polymers containing dioctyl and triethylene glycol side chains tends to form microspheres or sheet-like structures depending on the different solvent mixtures. The emission maximum of the dispersed polymers in water was significantly red-shifted with a dramatic reduction in the photoluminescence quantum yield. In addition, the emission maximum of the self-assembled copolymers was barely red shifted with a small reduction in the photoluminescence quantum yield.
Synthesis and photovoltaic behaviors of benzothiadiazole- and triphenylamine-based alternating copolymers
Wang, Ming,Li, Cuihong,Lv, Aifeng,Wang, Zhaohui,Bo, Zhishan,Zhang, Fengling
experimental part, p. 324 - 332 (2012/05/21)
A series of donor-acceptor (D-A) alternating copolymers (P1, P2 and P3) with thiophene-benzothiadiazole-thiophene-triphenylamine main chain have been synthesized by Suzuki polycondensation. P1, P2, and P3 possess medium optical band gaps of 1.99, 1.97 and 1.93 eV, respectively. Bulk heterojunction polymer solar cells (BHJ PSCs) with these polymers as donor and PC71BM as acceptor showed power conversion efficiency (PCE) in the range of 2.1-2.8%. The highest PCE of 2.8 % was achieved for P1 with short circuit current (J sc) of 7.8 mA/cm2. This study offers a useful and important insight for designing triphenylamine derivative-based polymers used for efficient PSCs.
