Open AccessSynthesis of Fluorene Based Alternating Copolymers using Direct Arylation Polymerization
Author(s) -
Mohd Sani Sarjadi,
Leong Khen Yap,
Lin Wong Xin,
Zuhair Jamain,
Lutfor Rahman
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23014
Subject(s) - fluorene , copolymer , polymer , band gap , polymerization , thiophene , chemistry , adsorption , polymer chemistry , chemical engineering , photochemistry , materials science , organic chemistry , optoelectronics , engineering
Many researches have been done to obtain a low band gap and high Polymeric solar cell (PSCs)polymer either by creating new polymer or revising reported polymers from previous studies. In presentwork, two new copolymers were synthesized through direct arylation polymerization to producepoly(9,9-didodecylfluorene-alt-benzo[c][1,2,5]thiadiazole (P1) and poly(9,9-didodecylfluorene-altthieno[3,2-b]thiophene) (P2). The P1 and P2 are donor-accepter copolymers. P1 and P2 were comparedto investigate its suitability to be applied in PSCs. The polymers obtained were characterized usingFT-IR, NMR and UV-Vis spectroscopy. P1 shows two adsorption bands at λmax1 = 243 nm and λmax2 =320 nm, whereas P2 also shows two adsorption bands at λmax1 = 243 nm and λmax2 = 427 nm. Theoptical band gap was calculated, P1 enabled band gap of 3.88 eV while P2 showed band gap of 2.91eV. This work could be provided an insight to design and synthesize more efficient fluorene-basedcopolymers as active layer of PSCs in due course.