A5050799059- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Synthesis and Properties of Aromatic Compounds
- Advanced biosensing and bioanalysis techniques
- Perovskite Materials and Applications
- Molecular Junctions and Nanostructures
- Synthesis and properties of polymers
- Organometallic Complex Synthesis and Catalysis
- Bacterial Genetics and Biotechnology
- RNA and protein synthesis mechanisms
- DNA and Nucleic Acid Chemistry
- Advanced Sensor and Energy Harvesting Materials
- Luminescence and Fluorescent Materials
- Inorganic and Organometallic Chemistry
- Biosensors and Analytical Detection
- Health and Medical Studies
- Fullerene Chemistry and Applications
- Advanced Polymer Synthesis and Characterization
- Fungal and yeast genetics research
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
- RNA Interference and Gene Delivery
- Organic Light-Emitting Diodes Research
- Organic and Molecular Conductors Research
- Advanced Biosensing Techniques and Applications
Imperial College London
2021-2025
King Abdullah University of Science and Technology
2023
Cambridge Consultants (United Kingdom)
2023
Royal Society of Chemistry
2023
Georgia Institute of Technology
2023
University of London
2023
Institut de Recherche Interdisciplinaire de Grenoble
2023
Northwestern University
2023
CIC nanoGUNE
2023
Pohang University of Science and Technology
2023
The rpoS (katF) gene of Escherichia coli encodes a putative sigma factor (sigma S) required for the expression variety stationary phase-induced genes, development stationary-phase stress resistance, and long-term starvation survival (R. Lange R. Hengge-Aronis, Mol. Microbiol. 5:49-59, 1991). Here we show that genes otsA, otsB, treA, osmB, previously known to be osmotically regulated, are also induced during transition into phase in S-dependent manner. otsA which encode trehalose-6-phosphate...
Abstract The power conversion efficiencies (PCEs) of single‐junction organic solar cells (OSCs) have surpassed 19%, owing to the emerging Y‐series nonfullerene acceptors (NFAs). Undoubtedly, and flexibility chemical design has been a strong driver for this rapid efficiency improvement in OSC field. Over course past 3 years, variety modifications made structure Y6 acceptor, large number NFAs reported further improve performance. Herein, we present our insights into rationale behind acceptor...
Solubility and processability play critical roles in the practical application of conjugated polymers, addition to their optoelectronic properties. Enhancing these features is normally accomplished by attaching aliphatic side chains polymer backbone, which, however, can come at expense other desirable properties, such as charge carrier mobility crystallinity. Here, we present a promising alternative approach: incorporating macrocycles into backbone. To demonstrate this approach, synthesized...
Trehalose metabolism in Escherichia coli is complicated by the fact that cells grown at high osmolarity synthesize internal trehalose as an osmoprotectant, independent of carbon source, although can serve a source both and low osmolarity. The elucidation pathway was facilitated isolation mutants defective genes encoding transport proteins degradative enzymes. analysis phenotypes these reactions catalyzed enzymes vitro allowed formulation Thus, utilization begins with phosphotransferase...
With the advent of nonfullerene acceptors (NFAs), organic photovoltaic (OPV) devices are now achieving high enough power conversion efficiencies (PCEs) for commercialization. However, these performances rely on active layers processed from petroleum-based and toxic solvents, which undesirable mass manufacturing. Here, we demonstrate use biorenewable 2-methyltetrahydrofuran (2MeTHF) cyclopentyl methyl ether (CPME) solvents to process donor: NFA-based OPVs with no additional additives in...
The disaccharide trehalose acts as an osmoprotectant well a carbon source in Escherichia coli. At high osmolarity of the growth medium, cells synthesize large amounts internally osmoprotectant. However, they can also degrade sole under both high- and low-osmolarity conditions. modes utilization are different two conditions have to be regulated (W. Boos, U. Ehmann, H. Forkl, W. Klein, M. Rimmele, P. Postma, J. Bacteriol. 172:3450-3461, 1990). low osmolarity, is transported via...
Abstract Solution‐processable near‐infrared (NIR) photodetectors are urgently needed for a wide range of next‐generation electronics, including sensors, optical communications and bioimaging. However, it is rare to find with >300 kHz cut‐off frequencies, especially in the NIR region, many emerging inorganic materials explored comprised toxic elements, such as lead. Herein, solution‐processed AgBiS 2 high frequencies under both white light (>1 MHz) (approaching 500 kHz) illumination...
Abstract Achieving spectrally selective organic photodetectors (OPDs) without using broadband‐absorbing semiconductors with input filtering is a strenuous challenge. Charge collection narrowing (CCN) promising strategy to obtain near‐infrared (NIR) OPD by adopting thick bulk heterojunction (BHJ) as active layers. In this work, random terpolymer comprised from diketopyrrolopyrrole (DPP), thiophene (T) and benzothiadiazole (BT), ran DPP‐2TBT, prepared used donor material in combination the low...
We report a series of n‐type conjugated polymers based on PNDI‐TfBTT and PNDIV‐TfBTT backbones constructed from electron‐deficient naphthalene diimide (NDI) fluorinated benzothiadiazole (fBT) units, with incorporating vinylene spacer. Quantitative post‐polymerisation modification (PPM) via nucleophilic substitution replaced the fBT fluorine thioether side chains, optionally containing azide groups. Thioether improved solubility, while subtly changing ordering polymer films. Azide...
We report a series of n‐type conjugated polymers based on PNDI‐TfBTT and PNDIV‐TfBTT backbones constructed from electron‐deficient naphthalene diimide (NDI) fluorinated benzothiadiazole (fBT) units, with incorporating vinylene spacer. Quantitative post‐polymerisation modification (PPM) via nucleophilic substitution replaced the fBT fluorine thioether side chains, optionally containing azide groups. Thioether improved solubility, while subtly changing ordering polymer films. Azide...
Abstract Two fully non‐fused small‐molecule acceptors BTIC‐1 and BTIC‐2 are reported for application in near‐infrared organic photodetectors (NIR OPDs). Both contain the same conjugated backbone but differing sidechain regiochemistry, affording significant differences their optical properties. The head‐to‐head arrangement of results a reduction band gap 0.17 eV compared to BTIC‐1, which contains head‐to‐tail arrangement, with absorption spanning visible near‐IR regions up 900 nm. These...
Unveiling the impact of different structural isomers carborane-containing non-fullerene acceptors on optoelectronic properties and organic photovoltaic performance.
Abstract Four glycolated polythiophene‐based organic mixed ionic‐electronic conductors (OMIECs), PE2gTT, PE2gT, PT2gTT, and PT2gT are prepared by atom‐efficient direct arylation polymerization, avoiding the need for toxic organometallic precursors. operable in p‐type accumulation mode electrochemical transistors (OECTs), with displaying best device performance a µ C* product figure‐of‐merit of 290 F cm −1 V s . A record volumetric capacitance among polythiophene OMIECs 313 −3 is observed...
A scalable, two-step synthesis facilitates the preparation of a polymer library varying side chain and co-monomer, enabling rapid photovoltaic device screening. FO6-T emerged as optimal donor achieving 15.4% PCE with L8BO acceptor.
Abstract Polarons exist when charges are injected into organic semiconductors due to their strong coupling with the lattice phonons, significantly affecting electronic charge‐transport properties. Understanding formation and (de)localization of polarons is therefore critical for further developing as a future electronics platform. However, there very few studies reported in this area. In particular, no direct situ monitoring polaron identification its dependence on molecular structure impact...
sn-Glycerol-3-phosphate (G3P) or glyceryl phosphoryl phosphodiesters, the substrates of phoB-dependent Ugp transport system, when transported exclusively through this can serve as a sole source phosphate but not carbon (H. Schweizer, M. Argast, and W. Boos, J. Bacteriol. 150:1154-1163, 1982). In order to explain phenomenon, we tested two possibilities: repression pho regulon by Ugp-mediated feedback inhibition internal G3P its degradation product Pi. Using an ugp-lacZ fusion, found that...
Emergent bioelectronic technologies are underpinned by the organic electrochemical transistor (OECT), which employs an electrolyte medium to modulate conductivity of its semiconductor channel. Here we utilize postpolymerization modification (PPM) on a conjugated polymer backbone directly introduce glycolated or anionic side chains via fluoride displacement. The resulting polymers demonstrated increased volumetric capacitances, with subdued swelling, compared their parent in p-type...
Light-induced formation of fullerene/BCP CT complexes results in new electronic states which enable efficient electron-transport through BCP to the electrode.
We present a series of newly developed donor‐acceptor (D‐A) polymers designed specifically for organic electrochemical transistors (OECTs) synthesized by straightforward route. All exhibited accumulation mode behavior in OECT devices, and tuning the donor comonomer resulted three‐order‐of‐magnitude increase transconductance. The best polymer gFBT‐g2T, normalized peak transconductance (gm,norm) 298±10.4 S cm‐1 with corresponding product charge‐carrier mobility volumetric capacitance, μC*, 847...
The performance of organic photodetectors (OPDs) using conjugated polymer donors and molecular acceptors has improved rapidly, but many polymers are difficult to upscale due their complex structures. This study examines two low-complexity thiophene copolymers with substituted benzooxadiazole (FO6-BO-T) or benzothiadiazole (FO6-T). Substituting sulfur oxygen in FO6-BO-T increased its ionization energy without affecting the optical gap. When blended nonfullerene acceptor IDSe, showed a...
Insights into how the optoelectronic properties of π-conjugated macrocycles evolve as a result systematic structural changes are presented, helping to develop structure–property relationships and molecular design guidelines.