Results 91 to 100 of about 207,447 (300)

Crystal structure of a second polymorph of tetrakis(pyridin-2-yl)methane

Acta Crystallographica Section E, 2014
A second polymorph of the title compound, C21H16N4, is reported. The original polymorph was solved by our group [Matsumoto et al. (2003). Tetrahedron Lett. 44, 2861–2864] in the monoclinic space group C2/c and refined to R = 0.050.
Kouzou Matsumoto, Masaki Kannami, Akira Fuyuhiro, Masaji Oda   +3 more
doaj   +1 more source

Pyridine-Boryl Radical-Catalyzed [3π + 2σ] Cycloaddition for the Synthesis of Pyridine Bioisosteres

The exploration of C(sp3)-rich three-dimensional (3D) scaffolds as bioisosteres for planar aromatics has garnered increasing attention. While the bioisosterism of benzenes has been extensively studied, the bioisosterism of pyridines, the second most ...
Yin , Li, Qingjiang , Li, Zhengwei , Ding, Pengfei , Li, Ya-Jie , Tang, Honggen, Wang, Yuan, Liu, Shuang , Lin, Jiang-Hao , Xue   +8 more
core   +1 more source

Pyridine-Terminated Conjugated Organic Molecules as an Interfacial Hole Transfer Bridge for NiO_x‑Based Perovskite Solar Cells

, 2019
To engineer the NiOx/perovskite interface and promote interfacial hole transfer, two pyridine-terminated conjugated small organic molecules (PTZ-1 and PTZ-2) are synthesized to link the NiOx and perovskite layers for NiOx-based perovskite solar cells ...
Zhong-Sheng Wang (303126), Ke Zhao (248186), Guanyu Zhao (5277953), Haoliang Cheng (7109171), Yaru Li (3340731)   +4 more
core   +1 more source

Scheme 1, Synthesis of fluorinated chalcones (1–20) and their 2-amino-pyridine-3-carbonitrile (21–40) and 2-amino-4H-pyran-3-carbonitrile (41–60) derivatives.

, 2022
Scheme 1, Synthesis of fluorinated chalcones (1–20) and their 2-amino-pyridine-3-carbonitrile (21–40) and 2-amino-4H-pyran-3-carbonitrile (41–60) derivatives.
M. Mukhlesur Rahman (2100193), Venu Sampath Golla (12884210), Bontha Venkata Subrahmanya Lokesh (12884213), Afzal Basha Shaik (12884216), Srinath Nissankararao (12884204), Rajendra Prasad Yejella (8937146), Surendra Babu Lagu (12884201), Richie R. Bhandare (12884207)   +7 more
core   +1 more source

Machine Learning Accelerated Computational Design of Bio‐Inspired Catalysts in the Nitrogen Reduction Reaction

Advanced Materials, EarlyView.
We introduce a computational workflow that combines quantum chemical calculations and machine learning techniques to predict the catalytic performance of a wide range of catalysts in the nitrogen reduction reaction (NRR). The analysis of the trained models provides insights into the complex structure–activity relationship in experimental catalytic ...
Leonardo Di Ciano, Zihan You, Haoran Chen, Qifan Zhong, Rong‐Zhen Liao, Shaoqi Zhan   +5 more
wiley   +1 more source

Crystal structure of the pyridine–diiodine (1/1) adduct

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title adduct, C5H5N·I2, the N—I distance [2.424 (8) Å] is remarkably shorter than the sum of the van der Waals radii. The line through the I atoms forms an angle of 78.39 (16)° with the normal to the pyridine ring.
Matti Tuikka, Matti Haukka
doaj   +1 more source

Ratiometric Mycotoxin Detection in Living Plants With Dual‐Emissive Nanosensors

Advanced Materials, EarlyView.
A minimally invasive microneedle patch integrates carbon dot‐embedded metal–organic frameworks as nanosensors to detect a key fungal toxin in living plants. The nanosensor produces a ratiometric fluorescence signal that enables early, non‐destructive diagnosis of fungal infection before visible symptoms, offering a new biomaterials‐based strategy for ...
Yuliang Li, Di Shen, Ziyang Huang, Suppanat Puangpathumanond, Calvin Thenarianto, Yue Zhao, Jolly Madathiparambil Saju, Rajani Sarojam, Dongmei Zhou, Tedrick Thomas Salim Lew   +9 more
wiley   +1 more source

Crystal structure, Hirshfeld surface analysis and interaction energy and DFT studies of 4-[(prop-2-en-1-yloxy)methyl]-3,6-bis(pyridin-2-yl)pyridazine

Acta Crystallographica Section E: Crystallographic Communications, 2019
The title compound, C18H16N4O, consists of a 3,6-bis(pyridin-2-yl)pyridazine moiety linked to a 4-[(prop-2-en-1-yloxy)methyl] group. The pyridine-2-yl rings are oriented at a dihedral angle of 17.34 (4)° and are rotated slightly out of the plane of the ...
Mouad Filali, Nada Kheira Sebbar, Tuncer Hökelek, Joel T. Mague, Said Chakroune, Abdessalam Ben-Tama, El Mestafa El Hadrami   +6 more
doaj   +1 more source

The Influence of Ratio Pyridine and Triethylamine Catalysts on Synthesis 2-Phenyl-Benzo [D][1, 3] Oxazine-4-On Derivatives [PDF]

, 2017
The aim of this research was to compare the effect of pyridine and triethylamine catalyst ratios on the synthesis of 2-phenyl-benzo(d)[1,3] oxazine-4-one derivatives.
Galih Satrio Putra, Tutuk Budiati, Juni Ekowati, Luthfi Ahmad Muchlashi, Melanny Ika Sulistyowati, Anita Puspa Widiyana   +5 more
core  

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

Advanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard, Thulasinath Raman Venkatesan, Michael Bauer, Valentin Razvan Lupu, Philipp Scheidegger, Francesco Taddei, Frank A. Nüesch, Dorina M. Opris   +7 more
wiley   +1 more source