Open AccessWell‐defined structures and nanoscale morphology for all‐conjugated BCPs
Author(s) -
Wang Shifan,
Jin Xiaodong,
Yao Bing,
Wang Peng,
Du Xihua,
Dong Liming,
Wang Xiaohui,
Zhu Xiaolin,
Huang Wei
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0002
Subject(s) - dispersity , gel permeation chromatography , copolymer , materials science , polymer , diimide , polymer chemistry , monomer , conjugated system , condensation polymer , polythiophene , perylene , fourier transform infrared spectroscopy , chemical engineering , conductive polymer , organic chemistry , chemistry , molecule , engineering , composite material
A series of conjugated donor–acceptor (D–A) block copolymers (BCPs) were synthesised using a one‐pot Stille coupling polycondensation reaction. This involved reaction between a series of mono‐bromo‐functionalised Poly3‐hexylthiophene (P3HT) polymers (P3HT‐Br, M n : 17, 21 and 43 kg/mol) and [ N , N ′‐ bis (2‐decyl‐tetradecyl)‐1,7‐dibromo‐3,4,9,10‐perylene diimide (PBI) and [2,5‐bis(trimethylstannyl)‐thiophene] (T) monomers. Purification using preparative gel permeation chromatography (GPC) removed any excess P3HT and resulted in BCPs with low polydispersity index values. The P3HT‐b‐PBIT BCPs were characterised using 1 H‐NMR and Fourier‐transform infrared spectroscopy. When compared to a P3HT/PBIT polymer blend, the D–A BCP films exhibited a remarkably fine structure with a nanoscale morphology. These results indicated that these D–A BCPs have the potential for use as nanostructured active layers in polymer solar cells.