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Synthesis and Superior Optical‐Limiting Properties of Fluorene‐Thiophene‐Benzothiadazole Polymer‐Functionalized Graphene Sheets
Author(s) -
Midya Anupam,
Mamidala Venkatesh,
Yang JiaXiang,
Ang Priscilla Kai Lian,
Chen ZhiKuan,
Ji Wei,
Loh Kian Ping
Publication year - 2010
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201000981
Subject(s) - fluorene , thiophene , graphene , materials science , limiting , polymer , nanotechnology , chemistry , organic chemistry , composite material , mechanical engineering , engineering
A polymer based on fluorene, thiophene, and benzothiadazole as the donor–spacer–acceptor triad is covalently coupled to reduced graphene oxide (rGO) sheets via diazonium coupling with phenyl bromide, followed by Suzuki coupling. These polymer–graphene hybrids show good solubility in organic solvents, such as chloroform, tetrahydrofuran (THF), toluene, dichlorobenzene, and N , N ‐dimethylformamide (DMF), and exhibit an excellent optical‐limiting effect with a 532‐nm laser beam. The optical‐limiting threshold energy values (0.93 J cm −2 for G–polymer 1 and 1.12 J cm −2 for G–polymer 2) of these G–polymer hybrids are better than that of carbon nanotubes (3.6 J cm −2 ).