Premium
Photorefractivity of Perylene Bisimide‐Sensitized Poly(4‐(diphenylamino)benzyl acrylate)
Author(s) -
Nguyen Tam Van,
Giang Ha Ngoc,
Kinashi Kenji,
Sakai Wataru,
Tsutsumi Naoto
Publication year - 2016
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201500322
Subject(s) - malononitrile , perylene , photochemistry , polymer chemistry , acrylate , materials science , derivative (finance) , quantum yield , absorption (acoustics) , chemistry , polymer , fluorescence , organic chemistry , molecule , optics , composite material , monomer , financial economics , economics , catalysis , physics
A perylene bisimide derivative of N , N ′‐diisopropylphenyl‐1,6,7,12‐tetrachloroperylene‐3,4,9,10‐tetracarboxyl bisimide (PBI) is synthesized and used as a sensitizer for a photorefractive (PR) polymer composite. Small amount (0.1 wt%) of PBI sensitizer gives the maximum PR performance of composite based on poly(4‐(diphenylamino)benzyl acrylate) (PDAA) (45 wt%), 2‐(4‐(azepan‐1‐yl)benzylidene)malononitrile (35 wt%), and (4‐(diphenylamino)phenyl)methanol (24.9 wt%). High external diffraction efficiency of 49%, response time of 47 ms, and sensitivity of 28 cm 2 J −1 are obtained under an applied electric field of 40 V μm −1 at writing beam of 532 nm. PBI sensitizer effectively forms a charge‐transfer complex with PDAA, which favors the generation of the charge carriers followed by the space‐charge formation. Furthermore, low PBI concentration contributes to low absorption coefficient at 532 nm, which leads to better PR performance.