and coworkers investigate the reactivity and regioselectivity of 2-pyrenyl as a coupling unit in Scholl reactions and disclose that the C1 and C3 of 2-pyrenyl units are the favorable sites for the Scholl reaction while further coupling at C4 does not occur. Guided by these findings, they have...
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Synthesis of zwitterionic open-shell bilayer spironanographenes Non-planar nanographenes are materials with promising prospects for chiroptical and optoelectronic applications. Now bilayer molecular nanographenes composed of two hexa-peri-haxabenzocoronene units linked by a spirocycle have been synthesized. Modu...
with group-15 elements, examples featuring the heavier elements Sb and Bi remain scarce. Now, a Bi5ring has been stabilized between two Nb(cyclopentadienyl) units, forming a triple-decker sandwich structure; the bonding analysis indicates that a Nb–Nb bond goes through the centre of the Bi5...
In the current work, ZSM-5 zeolite showing a dendritic 3D nanoarchitecture has been synthesized by the functionalization of protozeolitic nanounits with an amphiphilic organosilane, which provokes the branched aggregative growth of zeolite embryos. Dendritic ZSM-5 exhibits outstanding accessibility arising...
What goes around comes around: Stepwise photoisomerizations are observed in a macrocycle incorporating two photochromic dihydroazulene units, resulting in two vinylheptafulvene units that thermally revert in a stepwise manner to the original dihydroazulene macrocycle, on a fast and slow timescale (see ...
We present the synthesis and physicochemical studies of two regioisomeric π-electron-extended [1,4]thiaborins annulated with two benzothiophene units. They were used as scaffolds to construct thiaborin-based BODIPY singlet-oxygen photosensitizers with evident potential for use as photocatalysts. Abstract...
Lossless integra-tion of capacitor units can be regarded as one of the efficient ways to achieve a wider voltage range, which has not yet been fully conquered due to the lack of rational designs of the electrode structure and integration technology. This study presents an alternatingly ...
“I piloted a few units with a few of my AP Chem kids and non-AP kids. Every single one asked: “Why didn’t we use this in Chem II?” There are also TONS of practice problems and exams” - Shawn H. “My students like to because of the portability. They can take it on a tr...
In this lesson, learn about the science of chemistry. The history and branches of chemistry are explained while covering what chemistry is the study of. 2.Metric System | Measurements, Conversion & Units Lesson & Quiz Video Only 3.Unit Conversion and Dimensional Analysis Lesson & Quiz ...