A narrow range multielectrochromism from 2,5-di-(2-thienyl)-1H-pyrrole polymer bearing pendant perylenediimide moiety Dedicated to Professor Eyup Ozdemir.
Küçük Resim Yok
Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A new 2,5-di-(2-thienyl)-1H-pyrrole (SNS) moiety containing perylenediimide (PDI) acceptor as pendant side chain has been synthesized for an electroactive monomer and then directly deposited onto ITO/glass surface via electrochemical polymerization process. The observed electronic interaction only at the excited state due to the presence of phenylene spacer between SNS-donor and PDI-acceptor moiety leads to efficient fluorescence quenching. This charge separation behavior was also proved by theoretical DFT calculations. Thin films of the polymer electropolymerized onto transparent electrode exhibited ambipolar multi-electrochromic behavior including purple, violet-red-khaki-blue colors in both anodic and cathodic regime only between -1.2 and 1.0 V. We further demonstrated that this polymer film has a high contrast ratio (?T = 45% at 900 nm), a faster response (0.5 s), high coloration efficiency (254 cm 2 C-1) and retained its performance by 92% even after 5000 cycles. © 2014 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
2,5-di-(2-thienyl)-1H-pyrrole, Conjugated polymers, Donor-acceptor polymers, Electrochromic materials, Perylenediimides, Photoinduced electron transfer
Kaynak
Dyes and Pigments
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
113
