Design and synthesis of solution processable small molecules towards high photovoltaic performance

2011 ◽  
Vol 21 (7) ◽  
pp. 2159-2168 ◽  
Author(s):  
Zaifang Li ◽  
Qingfeng Dong ◽  
Yaowen Li ◽  
Bin Xu ◽  
Meng Deng ◽  
...  
Keyword(s):  
Small Molecules ◽  
Photovoltaic Performance ◽  
Design And Synthesis ◽  
Solution Processable

Benzothiadiazole building units in solution-processable small molecules for organic photovoltaics

2016 ◽  
Vol 4 (41) ◽  
pp. 15771-15787 ◽  
Author(s):  
Jia Du ◽  
Michael C. Biewer ◽  
Mihaela C. Stefan
Keyword(s):  
Small Molecules ◽  
Electron Acceptor ◽  
Organic Photovoltaics ◽  
Photovoltaic Performance ◽  
Optoelectronic Properties ◽  
Recent Advances ◽  
Solution Processable ◽  
Molecular Semiconductors ◽  
The Relationship

This review attempts to summarize recent advances with respect to solution-processable molecular semiconductors having 2,1,3-benzothiadiazole or its fluorine substituted derivatives as electron-acceptor units published in the last few years. The relationship between the structure, optoelectronic properties, and photovoltaic performance of these molecular semiconductors is discussed.

Aromatic end-capped acceptor effects on molecular stacking and the photovoltaic performance of solution-processable small molecules

2018 ◽  
Vol 6 (44) ◽  
pp. 22077-22085 ◽  
Author(s):  
Dan Deng ◽  
Yang Yang ◽  
Wenjun Zou ◽  
Yajie Zhang ◽  
Zhen Wang ◽  
...  
Keyword(s):  
Small Molecules ◽  
Photovoltaic Performance ◽  
Molecular Properties ◽  
Solution Processable ◽  
Molecular Stacking

Four small molecules were designed and synthesized with various acceptors, and their acceptor effects on molecular properties and device performances were investigated. The molecules based on medium strong acceptors obtained excellent efficiencies (ranged from 8.5% to 10.1%).

scholarly journals Solution processable diketopyrrolopyrrole (DPP) cored small molecules with BODIPY end groups as novel donors for organic solar cells

2014 ◽  
Vol 10 ◽  
pp. 2683-2695 ◽  
Author(s):  
Diego Cortizo-Lacalle ◽  
Calvyn T Howells ◽  
Upendra K Pandey ◽  
Joseph Cameron ◽  
Neil J Findlay ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Photovoltaic Performance ◽  
Photovoltaic Properties ◽  
Tddft Calculations ◽  
End Groups ◽  
Solution Processable ◽  
Dft And Tddft Calculations ◽  
Molar Extinction Coefficients

Two novel triads based on a diketopyrrolopyrrole (DPP) central core and two 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) units attached by thiophene rings have been synthesised having high molar extinction coefficients. These triads were characterised and used as donor materials in small molecule, solution processable organic solar cells. Both triads were blended with PC71BM as an acceptor in different ratios by wt % and their photovoltaic properties were studied. For both the triads a modest photovoltaic performance was observed, having an efficiency of 0.65%. Moreover, in order to understand the ground and excited state properties and vertical absorption profile of DPP and BODIPY units within the triads, theoretical DFT and TDDFT calculations were performed.

Efficient strategies to improve photovoltaic performance of A-D-A type small molecules by introducing rigidly fluorinated central cores

2017 ◽  
Vol 147 ◽  
pp. 505-513 ◽  
Author(s):  
Zhongbin Qiu ◽  
Xiaopeng Xu ◽  
Shuai Zhang ◽  
Pu Wang ◽  
Yafei Wang ◽  
...  
Keyword(s):  
Small Molecules ◽  
Photovoltaic Performance

High performance solution-processable tetrathienoacene (TTAR) based small molecules for organic field effect transistors (OFETs)

2017 ◽  
Vol 53 (43) ◽  
pp. 5898-5901 ◽  
Author(s):  
Sureshraju Vegiraju ◽  
Deng-Yi Huang ◽  
Pragya Priyanka ◽  
Yo-Shan Li ◽  
Xian-Lun Luo ◽  
...  
Keyword(s):  
Small Molecules ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Solution Processable

DDTT-TTARexhibits the highest mobility of 0.81 cm2V−1s−1.

scholarly journals The design and synthesis of an antibacterial phenothiazine–siderophore conjugate

2018 ◽  
Vol 14 ◽  
pp. 2646-2650 ◽  
Author(s):  
Abed Tarapdar ◽  
James K S Norris ◽  
Oliver Sampson ◽  
Galina Mukamolova ◽  
James T Hodgkinson
Keyword(s):  
Small Molecules ◽  
Antibacterial Agents ◽  
Multidrug Resistant ◽  
Biological Evaluation ◽  
Amide Bond ◽  
Design And Synthesis ◽  
Resistant Tuberculosis ◽  
Multidrug Resistant Tuberculosis ◽  
Latent Tb ◽  
Covalently Linked

Siderophore–antibiotic conjugates consist of an antibiotic covalently linked by a tether to a siderophore. Such conjugates can demonstrate enhanced uptake and internalisation to the bacterial cell resulting in significantly reduced MIC values and extended spectrum of activity. Phenothiazines are a class of small molecules that have been identified as a potential treatment for multidrug resistant tuberculosis and latent TB. Herein we report the design and synthesis of the first phenothiazine–siderophore conjugate. A convergent synthetic route was developed whereby the functionalised phenothiazine component was prepared in four steps and the siderophore component also prepared in four steps. In M. smegmatis the functionalised phenothiazine demonstrated an equipotent MIC value in direct comparison to the parent phenothiazine from which it was derived. The final conjugate was synthesised by amide bond formation between the two components and global deprotection of the PMB protecting groups to unmask the catechol iron chelating groups of the siderophore. The synthesis is readily amenable to the preparation of analogues whereby the siderophore component of the conjugate can be modified. The route will be used to prepare a library of siderophore–phenothiazine conjugates for full biological evaluation of much needed new antibacterial agents.

Improving Photovoltaic Performance of the Linear A-Ar-A-type Small Molecules with Diketopyrropyrrole Arms by Tuning the Linkage Position of the Anthracene Core

2015 ◽  
Vol 7 (33) ◽  
pp. 18292-18299 ◽  
Author(s):  
Xiongwei Duan ◽  
Manjun Xiao ◽  
Jianhua Chen ◽  
Xiangdong Wang ◽  
Wenhong Peng ◽  
...  
Keyword(s):  
Small Molecules ◽  
Photovoltaic Performance ◽  
Linkage Position

Triazatruxene-based small molecules with thermally activated delayed fluorescence, aggregation-induced emission and mechanochromic luminescence properties for solution-processable nondoped OLEDs

2018 ◽  
Vol 6 (46) ◽  
pp. 12503-12508 ◽  
Author(s):  
Yonghong Chen ◽  
Shumeng Wang ◽  
Xiaofu Wu ◽  
Yuxiang Xu ◽  
Hua Li ◽  
...  
Keyword(s):  
Small Molecules ◽  
Delayed Fluorescence ◽  
Luminescence Properties ◽  
Thermally Activated Delayed Fluorescence ◽  
Aggregation Induced Emission ◽  
Thermally Activated ◽  
Solution Processable ◽  
Low Efficiency ◽  
Mechanochromic Luminescence

Thermally activated delayed fluorescence, aggregation-induced emission and mechanochromic luminescence properties are combined in triazatruxene-based small molecules, which exhibit low efficiency roll-off in OLED devices.

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