To improve the performance of organic solar cells, various methods have been used to increase the light absorbance and electron transfer efficiency or decrease the internal resistance of the device. In this article, red dyes of phosphorescent materials are used to improve the performance of bulk heterojunction organic solar cells based on MDMO-PPV and PCBM. Solar cell devices doped with different red dyes showed higher performances in terms of current, voltage and conversion efficiency than those without red dyes. The efficiency was maximized in the devices with a 10% concentration of red dye 2, which was attributed to the longer exciton lifetimes that were induced by the triplet spin state of the red dyes allowing them to reach the p-n junction and thereby generate more photocurrent.
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http://dx.doi.org/10.1166/jnn.2009.1630 | DOI Listing |
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January 2025
Institute of Optical Materials and Chemical Biology, Guangxi Key Laboratory of Electrochemical Energy Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, 530004, P. R. China.
Although classical fluorescent dyes feature advantages of high quantum yield, tunable "OFF-ON" fluorescence, and modifiable chemical structures, etc., their bio-applications in deep tissue remains challenging due to their excessively short emission wavelength (that may lead to superficial tissue penetration depth). Therefore, there is a pressing need for pushing the wavelength of classical dyes from visible region to NIR-II window.
View Article and Find Full Text PDFAnal Chim Acta
February 2025
Joint Drug Development and Innovation Centre for Neurological Disorders of Lanzhou University-China National Biotec Group-Lanzhou Biotechnology Development Co., School of Pharmacy, Lanzhou University, Lanzhou, Gansu, 730000, PR China; MOE Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, Gansu, 730000, PR China. Electronic address:
Background: Botulinum neurotoxin type A (BoNT/A) is the most potent and prevalent neurotoxin known to cause botulism, and is also widely used in medical and cosmetic applications. The detection of BoNT/A is of great significance for botulism diagnosis and drug potency determination. Currently, the mouse bioassay (MBA) has long been the gold standard method but has disadvantages of ethical concerns, long testing duration, and high costs.
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December 2024
Department of Physical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland.
This work aimed to investigate the adsorption of organic compounds (4-nitroaniline and 4-chlorophenoxyacetic acid) on activated carbon in the presence of selected dyes (uranine and Acid Red 88) and surfactants (sodium dodecyl sulfate and hexadecyltrimethylammonium bromide). The adsorbent, i.e.
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December 2024
Department of Physiology, Pomeranian Medical University in Szczecin, Powstancow Wielkopolskich 72, 70-111 Szczecin, Poland.
Nanomaterials (Basel)
December 2024
College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China.
This study is the first to convert two waste materials, waste rice noodles (WRN) and red mud (RM), into a low-cost, high-value magnetic photocatalytic composite. WRN was processed via a hydrothermal method to produce a solution containing carbon quantum dots (CQDs). Simultaneously, RM was dissolved in acid to form a Fe ion-rich solution, which was subsequently mixed with the CQDs solution and underwent hydrothermal treatment.
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