In this work, a 2-pyran-2-one-functionalized diketopyrrolopyrrole (DPP) (coded as receptor ) was designed, synthesized, and fully characterized by various spectroscopic methods. The physical properties of molecular architecture were studied employing theoretical calculations. Receptor was elegantly scrutinized for the sensing of explosive nitroaromatic compounds (NACs). Receptor exhibited detection of nitro explosives, i.e., picric acid (PA), 2,4-dinitrophenol (DNP), and nitrophenol (NP), the fluorescence quenching mechanism. The Stern-Volmer equation was employed to evaluate the effectiveness of the quenching process. It was found that exhibited a detection limit of about 7.58 × 10, 8.35 × 10, and 9.05 × 10 M toward PA, DNP, and NP, respectively. The influence of interfering metal ions and anions on PA detection was investigated thoroughly. Furthermore, receptor based low-cost fluorescent thin-layer chromatography (TLC) plates were developed for the recognition of PA.
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http://dx.doi.org/10.1021/acs.joc.2c01439 | DOI Listing |
Chem Commun (Camb)
January 2025
College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Normal University, Jinan 250014, P. R. China.
A vinylene-linked DPP-COF with an ultra-narrow bandgap of 1.06 eV was reported. This COF demonstrates high chemical stability and significant charge transfer properties, and was applied to the photooxidation of sulfides and tetrahydroisoquinolines, exhibiting exceptional photoactivities.
View Article and Find Full Text PDFMacromol Rapid Commun
January 2025
State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.
Conjugated polymers have attracted extensive attention as semiconducting materials in wearable and flexible electronics. In this study, we utilize atom-economical Knoevenagel reaction to construct two conjugated polymers, PTDPP-CNTT and PFDPP-CNTT, based on dialdehyde-thiophene/furan-flanked diketopyrrolopyrrole (DPP) and 2,2'-(thieno[3,2-b]thiophene-2,5-diyl)diacetonitrile (CNTT). The resulting polymers exhibited suitable highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO) energy levels, small bandgaps, and broad UV-vis-NIR absorptions (≈400-1000 nm), endowing them with photothermal and balanced ambipolar semiconducting properties with hole and electron mobilities over 10 cmVs.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Department of Chemical and Biological Engineering, University of Ottawa, 161 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada.
Developing sustainable electronics requires using materials that are either recyclable or biodegradable, without compromising on electrical performance. Here, we introduce a solution-processed biodegradable polymer blend consisting of a diketopyrrolopyrrole-based semiconducting polymer (DPP2T) and different mixtures of two biodegradable polymers, polycaprolactone (PCL) and polylactic acid (PLA). We find that controlling the ratio of components enables a reduction in semiconductor polymer loading (∼70:80% reduction) while maintaining or improving field-effect transistor performance.
View Article and Find Full Text PDFJ Phys Chem Lett
January 2025
Solid State and Structural Chemistry Unit, Indian Institute of Science, Bengaluru 560012, India.
The synthesis of organic radicals continues to garner significant interest due to their fascinating optical, electronic, and magnetic properties. Moreover, the growing demand for chemically stable organic radicals is driven by the rapid expansion of the market for electronic devices utilizing organic semiconductors. In this context, the development of multifaceted approaches for the design of stable organic radicals is of great importance.
View Article and Find Full Text PDFJ Phys Chem Lett
January 2025
College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China.
This paper reports the utilization of cost-effective bottom-contact electrodes composed of aluminum (Al) and titanium (Ti) to facilitate efficient electron injection in n-channel organic transistors. The optimized Al/Ti electrode has a low work function of around 4.03 eV, combining the high conductivity of Al with the stable interface of Ti, making it highly suitable for the electrodes of n-channel transistors.
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