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.

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 near-infrared Zn-porphyrin dye utilized in co-sensitized solar cell toward high efficiency

2017 ◽  
Vol 136 ◽  
pp. 450-457 ◽  
Author(s):  
Wei-Lu Ding ◽  
Yi-Ming Cui ◽  
Li-Na Yang ◽  
Quan-Song Li ◽  
Ze-Sheng Li
Keyword(s):  
Solar Cell ◽  
Rational Design ◽  
Near Infrared ◽  
High Efficiency

scholarly journals Rational design of near-infrared dyes based on boron dipyrromethene derivatives for application in organic solar cells

RSC Advances ◽  
2018 ◽  
Vol 8 (59) ◽  
pp. 33659-33665 ◽  
Author(s):  
Man Zhang ◽  
Ruifa Jin
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Organic Solar Cells ◽  
Rational Design ◽  
Near Infrared ◽  
High Efficiency ◽  
Boron Dipyrromethene ◽  
Active Donor

A series of novel pyrrolopyrrole boron dipyrromethene derivatives have been designed as high-efficiency red/near-infrared-active donor materials and charge transport materials in OSC applications.

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 High-Efficiency Responsive Smart Windows Fabricated by Carbon Nanotubes Modified by Liquid Crystalline Polymers

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 440
Author(s):  
Yuan Deng ◽  
Shi-Qin Li ◽  
Qian Yang ◽  
Zhi-Wang Luo ◽  
He-Lou Xie
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Crystalline ◽  
Near Infrared ◽  
High Efficiency ◽  
Polymer Brush ◽  
Light Transmittance ◽  
Smart Window ◽  
Vertical Orientation ◽  
Smart Windows ◽  
Conversion Materials

Smart windows can dynamically and adaptively adjust the light transmittance in non-energy or low-energy ways to maintain a comfortable ambient temperature, which are conducive to efficient use of energy. This work proposes a liquid crystal (LC) smart window with highly efficient near-infrared (NIR) response using carbon nanotubes grafted by biphenyl LC polymer brush (CNT-PDB) as the orientation layer. The resultant CNT-PDB polymer brush can provide the vertical orientation of LC molecules to maintain the initial transparency. At the same time, the smart window shows a rapid response to NIR light, which can quickly adjust the light transmittance to prevent sunlight from entering the room. Different from common doping systems, this method avoids the problem of poor compatibility between the LC host and photothermal conversion materials, which is beneficial for improving the durability of the device.

scholarly journals Antireflective and Superhydrophilic Structure on Graphite Written by Femtosecond Laser

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 236
Author(s):  
Rui Lou ◽  
Guangying Li ◽  
Xu Wang ◽  
Wenfu Zhang ◽  
Yishan Wang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Near Infrared ◽  
High Efficiency ◽  
Electronic Devices ◽  
Sample Surface ◽  
Graphite Surface ◽  
Hazardous Substances ◽  
Functional Surface ◽  
Nano Structures ◽  
Average Reflectance

Antireflection and superhydrophilicity performance are desirable for improving the properties of electronic devices. Here, we experimentally provide a strategy of femtosecond laser preparation to create micro-nanostructures on the graphite surface in an air environment. The modified graphite surface is covered with abundant micro-nano structures, and its average reflectance is measured to be 2.7% in the ultraviolet, visible and near-infrared regions (250 to 2250 nm). The wettability transformation of the surface from hydrophilicity to superhydrophilicity is realized. Besides, graphene oxide (GO) and graphene are proved to be formed on the sample surface. This micro-nanostructuring method, which demonstrates features of high efficiency, high controllability, and hazardous substances zero discharge, exhibits the application for functional surface.

scholarly journals Rational Design of Aqueous Conjugated Polymer Nanoparticles as Potential Theranostic Agents of Breast Cancer

2021 ◽  
Author(s):  
Panagiota Koralli ◽  
Spyridon Tsikalakis ◽  
Maria Goulielmaki ◽  
Stella Arelaki ◽  
Janina Müller ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Absorption Coefficient ◽  
Conjugated Polymer ◽  
Rational Design ◽  
Polymer Nanoparticles ◽  
Quantum Yields ◽  
Conjugated Polymer Nanoparticles ◽  
Theranostic Agents ◽  
High Absorption Coefficient ◽  
High Absorption

Conjugated polymer nanoparticles (CPNs) have emerged as a new promising class of cancer theranostic agents due to their desirable optical features, such as high absorption coefficient and photoluminescence quantum yields,...

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