Metal Chelation-Assisted Amine–Amine Electronic Coupling through the 4,4′-Positions of 2,2′-Bipyridine

2015 ◽  
Vol 54 (4) ◽  
pp. 1272-1282 ◽  
Author(s):  
Hai-Jing Nie ◽  
Wen-Wen Yang ◽  
Ren-Hui Zheng ◽  
Qiang Shi ◽  
Hui Chen ◽  
...  
Keyword(s):  
Electronic Coupling ◽  
Metal Chelation ◽  
Amine Amine

Multi-Center Redox-Active System: Amine–Amine Electronic Coupling through a Cyclometalated Bisruthenium Segment

2013 ◽  
Vol 52 (7) ◽  
pp. 4040-4045 ◽  
Author(s):  
Chang-Jiang Yao ◽  
Yu-Wu Zhong ◽  
Jiannian Yao
Keyword(s):  
Electronic Coupling ◽  
Active System ◽  
Redox Active ◽  
Amine Amine

Amine–Amine Electronic Coupling through a Dibenzo[a,e]pentalene Bridge

2015 ◽  
Vol 18 (2) ◽  
pp. 256-259 ◽  
Author(s):  
Jun-Jian Shen ◽  
Jiang-Yang Shao ◽  
Xiaozhang Zhu ◽  
Yu-Wu Zhong
Keyword(s):  
Electronic Coupling ◽  
Amine Amine

Amine-Amine Electronic Coupling through an Anthracene Bridge

2016 ◽  
Vol 36 (10) ◽  
pp. 2407
Author(s):  
JunShao Feng ◽  
Jiangyang Shao ◽  
Zhongliang Gong ◽  
Yuwu Zhong
Keyword(s):  
Electronic Coupling ◽  
Amine Amine

Drug Design of Inhibitors of Alzheimer’s Disease (AD): POM and DFT Analyses of Cholinesterase Inhibitory Activity of β-amino di-Carbonyl Derivatives

2019 ◽  
Vol 19 (8) ◽  
pp. 688-705
Author(s):  
Taibi Ben Hadda ◽  
Abdur Rauf ◽  
Hsaine Zgou ◽  
Fatma Sezer Senol ◽  
Ilkay Erdogan Orhan ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cholinesterase Inhibitors ◽  
Metal Accumulation ◽  
Microtiter Plate ◽  
Metal Chelation ◽  
Carbonyl Derivatives ◽  
Cholinesterase Inhibitory Activity ◽  
Inhibitory Potential

Background:Since deficit of acetylcholine has been evidenced in the Alzheimer’s disease (AD) patients, cholinesterase inhibitors are currently the most specified drug category for the remediation of AD.Method:In the present study, 16 compounds (1-16) with dicarbonyl skeletons have been synthesized and tested for their inhibitory potential in vitro against AChE and BChE using ELISA microtiter plate assays at 100 μg/mL. Since metal accumulation is related to AD, the compounds were also tested for their metal-chelation capacity.Results and Conclusion:All the investigated dicarbonyl compounds exerted none or lower than 30% inhibition against both cholinesterases, whereas compounds 2, 8 and 11 showed 37, 42, 41% of inhibition towards BChE, being the most active. The highest metal-chelation capacity was observed with compound 8 (53.58 ± 2.06%). POM and DFT analyses are in good harmonization with experimental data.

scholarly journals Thermochromic aggregation-induced dual phosphorescence via temperature-dependent sp3-linked donor-acceptor electronic coupling

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tao Wang ◽  
Zhubin Hu ◽  
Xiancheng Nie ◽  
Linkun Huang ◽  
Miao Hui ◽  
...  
Keyword(s):  
Excited State ◽  
Room Temperature ◽  
Electronic Coupling ◽  
Temperature Dependent ◽  
Molecular Systems ◽  
Donor And Acceptor ◽  
Theoretical Investigations ◽  
Donor Acceptor ◽  
And Control ◽  
Two Temperature

AbstractAggregation-induced emission (AIE) has proven to be a viable strategy to achieve highly efficient room temperature phosphorescence (RTP) in bulk by restricting molecular motions. Here, we show that by utilizing triphenylamine (TPA) as an electronic donor that connects to an acceptor via an sp3 linker, six TPA-based AIE-active RTP luminophores were obtained. Distinct dual phosphorescence bands emitting from largely localized donor and acceptor triplet emitting states could be recorded at lowered temperatures; at room temperature, only a merged RTP band is present. Theoretical investigations reveal that the two temperature-dependent phosphorescence bands both originate from local/global minima from the lowest triplet excited state (T1). The reported molecular construct serves as an intermediary case between a fully conjugated donor-acceptor system and a donor/acceptor binary mix, which may provide important clues on the design and control of high-freedom molecular systems with complex excited-state dynamics.

scholarly journals Fungal Melanins and Applications in Healthcare, Bioremediation and Industry

2021 ◽  
Vol 7 (6) ◽  
pp. 488
Author(s):  
Ellie Rose Mattoon ◽  
Radames J. B. Cordero ◽  
Arturo Casadevall
Keyword(s):  
Chemical Structure ◽  
Industrial Processes ◽  
Metal Chelation ◽  
Biological Functions ◽  
Societal Benefit ◽  
Potential Applications ◽  
Fungal Melanin ◽  
Human Use ◽  
Fungal Melanins ◽  
Isolated Species

Melanin is a complex multifunctional pigment found in all kingdoms of life, including fungi. The complex chemical structure of fungal melanins, yet to be fully elucidated, lends them multiple unique functions ranging from radioprotection and antioxidant activity to heavy metal chelation and organic compound absorption. Given their many biological functions, fungal melanins present many possibilities as natural compounds that could be exploited for human use. This review summarizes the current discourse and attempts to apply fungal melanin to enhance human health, remove pollutants from ecosystems, and streamline industrial processes. While the potential applications of fungal melanins are often discussed in the scientific community, they are successfully executed less often. Some of the challenges in the applications of fungal melanin to technology include the knowledge gap about their detailed structure, difficulties in isolating melanotic fungi, challenges in extracting melanin from isolated species, and the pathogenicity concerns that accompany working with live melanotic fungi. With proper acknowledgment of these challenges, fungal melanin holds great potential for societal benefit in the coming years.

Permanent Dipole Moments Enhance Electronic Coupling and Singlet Fission in Pentacene

2021 ◽  
pp. 7453-7458
Author(s):  
Clemens Zeiser ◽  
Luca Moretti ◽  
Thomas Geiger ◽  
Lukas Kalix ◽  
Ana M. Valencia ◽  
...  
Keyword(s):  
Dipole Moments ◽  
Electronic Coupling ◽  
Singlet Fission

Tuning p-Si(111) Photovoltage via Molecule|Semiconductor Electronic Coupling

2021 ◽  
Vol 143 (6) ◽  
pp. 2567-2580
Author(s):  
Dylan G. Boucher ◽  
Kara Kearney ◽  
Elif Ertekin ◽  
Michael J. Rose
Keyword(s):  
Electronic Coupling ◽  
Semiconductor Electronic
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