Chalcogenodiazolo[3,4-c]pyridine based donor–acceptor–donor polymers for green and near-infrared electrochromics

2015 ◽  
Vol 6 (48) ◽  
pp. 8248-8258 ◽  
Author(s):  
Shouli Ming ◽  
Shijie Zhen ◽  
Ximei Liu ◽  
Kaiwen Lin ◽  
Hongtao Liu ◽  
...  
Keyword(s):  
Rational Design ◽  
Near Infrared ◽  
Type Systems ◽  
Electrochromic Polymers ◽  
Donor Acceptor

Thiadiazolo[3,4-c]pyridine and selenadiazolo[3,4-c]pyridine were employed as novel acceptors for rational design of donor-acceptor-type systems, yielding neutral green and near-infrared electrochromic polymers.

Rational design of high efficiency green to deep red/near-infrared emitting materials based on isomeric donor–acceptor chromophores

2019 ◽  
Vol 7 (7) ◽  
pp. 1880-1887 ◽  
Author(s):  
Youming Zhang ◽  
Zhao Chen ◽  
Jun Song ◽  
Junjie He ◽  
Xin Wang ◽  
...  
Keyword(s):  
Rational Design ◽  
Near Infrared ◽  
High Efficiency ◽  
Quantum Yields ◽  
Donor Acceptor

A family of chromophores with an isomeric donor–acceptor framework are synthesized, which show remarkably different emission wavelengths with high photoluminescence quantum yields and decent electroluminescent efficiencies.

[1,2,5]Chalcogenodiazolo[3,4-c]pyridine and selenophene based donor–acceptor–donor electrochromic polymers electrosynthesized from high fluorescent precursors

2016 ◽  
Vol 40 (10) ◽  
pp. 8316-8323 ◽  
Author(s):  
Baoyang Lu ◽  
Shouli Ming ◽  
Kaiwen Lin ◽  
Shijie Zhen ◽  
Hongtao Liu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Emission Characteristics ◽  
Red Emission ◽  
Electrochromic Polymers ◽  
Donor Acceptor

Two selenophene precursors, exhibiting yellow and red emission characteristics, were electropolymerized at low potentials to form the near-infrared electrochromic films.

Rational design of pyrrolopyrrole-aza-BODIPY-based acceptor–donor–acceptor triads for organic photovoltaics application

2020 ◽  
Vol 56 (20) ◽  
pp. 2975-2978 ◽  
Author(s):  
Ru Feng ◽  
Narumi Sato ◽  
Takuma Yasuda ◽  
Hiroyuki Furuta ◽  
Soji Shimizu
Keyword(s):  
Organic Photovoltaics ◽  
Rational Design ◽  
Near Infrared ◽  
Donor Acceptor

Acceptor–donor–acceptor triads consisting of diketopyrrolopyrrole (DPP) or pyrrolopyrrole aza-BODIPY (PPAB) or both as acceptors and cyclopentadithiophene as a donor were rationally designed for near infrared (NIR) photovoltaics application.

scholarly journals Real-time observation of tetrapyrrole binding to an engineered bacterial phytochrome

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Yusaku Hontani ◽  
Mikhail Baloban ◽  
Francisco Velazquez Escobar ◽  
Swetta A. Jansen ◽  
Daria M. Shcherbakova ◽  
...  
Keyword(s):  
Real Time ◽  
Rational Design ◽  
Near Infrared ◽  
Fluorescent Proteins ◽  
Covalent Bond ◽  
Binding Pocket ◽  
Tissue Imaging ◽  
Covalent Attachment ◽  
Time Resolved

AbstractNear-infrared fluorescent proteins (NIR FPs) engineered from bacterial phytochromes are widely used for structural and functional deep-tissue imaging in vivo. To fluoresce, NIR FPs covalently bind a chromophore, such as biliverdin IXa tetrapyrrole. The efficiency of biliverdin binding directly affects the fluorescence properties, rendering understanding of its molecular mechanism of major importance. miRFP proteins constitute a family of bright monomeric NIR FPs that comprise a Per-ARNT-Sim (PAS) and cGMP-specific phosphodiesterases - Adenylyl cyclases - FhlA (GAF) domain. Here, we structurally analyze biliverdin binding to miRFPs in real time using time-resolved stimulated Raman spectroscopy and quantum mechanics/molecular mechanics (QM/MM) calculations. Biliverdin undergoes isomerization, localization to its binding pocket, and pyrrolenine nitrogen protonation in <1 min, followed by hydrogen bond rearrangement in ~2 min. The covalent attachment to a cysteine in the GAF domain was detected in 4.3 min and 19 min in miRFP670 and its C20A mutant, respectively. In miRFP670, a second C–S covalent bond formation to a cysteine in the PAS domain occurred in 14 min, providing a rigid tetrapyrrole structure with high brightness. Our findings provide insights for the rational design of NIR FPs and a novel method to assess cofactor binding to light-sensitive proteins.

scholarly journals Donor–acceptor–acceptor-type near-infrared fluorophores that contain dithienophosphole oxide and boryl groups: Effect of the boryl group on the nonradiative decay

2021 ◽  
Author(s):  
Yoshiaki Sugihara ◽  
Naoto Inai ◽  
Masayasu Taki ◽  
Thomas Baumgartner ◽  
Ryosuke Kawakami ◽  
...  
Keyword(s):  
Near Infrared ◽  
Effective Strategy ◽  
Nonradiative Decay ◽  
Donor Acceptor

he use of donor–π–acceptor (D–π–A) skeletons is an effective strategy for the design of fluorophores with red-shifted emission. In particular, the use of amino and boryl moieties as the electron-donating...

A small bandgap (3E,7E)-3,7-bis(2-oxoindolin-3-ylidene)benzo[1,2-b:4,5-b′]difuran-2,6(3H,7H)-dione (IBDF) based polymer semiconductor for near-infrared organic phototransistors

2017 ◽  
Vol 5 (46) ◽  
pp. 12163-12171 ◽  
Author(s):  
Yinghui He ◽  
Jesse T. E. Quinn ◽  
Dongliang Hou ◽  
Jenner H.L. Ngai ◽  
Yuning Li
Keyword(s):  
Band Gap ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Polymer Semiconductor ◽  
Donor Acceptor ◽  
Small Band

A novel small bandgap donor–acceptor polymer with a very small band gap of 0.95 eV shows promising photoresponse under near infrared light in phototransistors.

scholarly journals Rational Design of TADF Polymers Using a Donor-Acceptor Monomer with Enhanced TADF Efficiency Induced by the Energy Alignment of Charge Transfer and Local Triplet Excited States

2016 ◽  
Vol 4 (4) ◽  
pp. 597-607 ◽  
Author(s):  
Roberto S. Nobuyasu ◽  
Zhongjie Ren ◽  
Gareth C. Griffiths ◽  
Andrei S. Batsanov ◽  
Przemyslaw Data ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Rational Design ◽  
Donor Acceptor ◽  
Triplet Excited States
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