Results 221 to 230 of about 5,444,235 (274)

Vibrational Circular Dichroism Spectra of 2,5‐Diaminoterephtalate Macrocycles Reveal Distant Vibrational Exciton Coupling

Chemistry – A European Journal, EarlyView.
The energy level diagrams for the ν(C═O) and the δ(N─H) vibrations, resulting of combining in‐phase and out‐of‐phase modes on the basis of their local symmetries, was built by applying the exciton coupling theory to a new class of chiral macrocycles, based on the 2,5‐diaminoterephthalate scaffold.
Samara Medina, Krzysztof Nowak, Marek Grzybowski, Juan Casado, Francisco J. Ramírez   +4 more
wiley   +1 more source

Intramolecular Steric Congestion Tailored Excited-State Dynamics of C═C Photorotation for Effective Photothermal Tuning. [PDF]

Chemistry
Zheng T, Yan Y, Zhang Y, Chen S, Wei M, Si C, Wang Z, Zheng X, Han X.   +8 more
europepmc   +1 more source

Reversible Assembly and Disassembly of σ‐Aromatic B3 Rings

Chemistry – A European Journal, EarlyView.
B3 rings are the smallest σ‐aromatic boron compounds. Here, we show for the first time that cationic diboranes with an electron‐precise (2c,2e) bond can be reversibly converted to σ‐aromatic B3 rings with electron‐deficient (3c,2e) bonding. Base‐induced disassembly of the B3 ring leads back to cationic diboranes and monoborane adducts.
Julian Krauß, Frederick Koch, Niels Karsten Paul Hecht, Elisabeth Kaifer, Hans‐Jörg Himmel   +4 more
wiley   +1 more source

Bifunctional Catalysis of a Crossed Aldol Condensation by Diamines: Impact of Tether Composition and Length. [PDF]

J Org Chem
Lampkin PP, Roberts RC, Czeslawski B, Gellman SH.   +3 more
europepmc   +1 more source

Light, Redox, and Ligand Noninnocence Cooperate in Naphthalene Diimide‐Functionalized N‐Heterocyclic Carbene Iridium Complexes

Chemistry – A European Journal, EarlyView.
Naphthalene diimide–N‐heterocyclic carbene iridium complexes display uncommon multistimuli‐responsive behavior combining strong Cl(lp)···π interactions, ligand non‐innocence, visible‐light photoreduction, and conPET photocatalysis. The study also provides new insight into the interaction of NDI platforms with fluoride/basic anions, revealing unexpected
Maite Silva‐Muñoz, Macarena Poyatos, Eduardo Peris   +2 more
wiley   +1 more source

Conformational bifurcation drives dual transport regimes in molecular junctions: Unsupervised machine learning insights. [PDF]

Smart Mol
Chen Y, Bâldea I, Koren E, Xie Z.
europepmc   +1 more source

Regioisomerism Rewires Optical and Ion Recognition Properties in Azulenylsumanenes—Curved Non‐Alternant π‐Systems

Chemistry – A European Journal, EarlyView.
Regioisomerism rewires orbital topology and electronic polarity in curved non‐alternant π‐systems, switching both optical response and alkali metal ion recognition from Na+ to Rb+ selectivity. ABSTRACT Herein, we explore the fundamental concept of combining the molecular curvature of a molecular fragment of buckminsterfullerene with the pronounced ...
Jakub Cyniak, Anna Mazur, Bartłomiej Pigulski, Hidehiro Sakurai, Artur Kasprzak   +4 more
wiley   +1 more source

A programmable bifunctional flavoenzyme for direct amine-to-ester conversion. [PDF]

Sci Adv
Wu Y, Song W, Wei W, Liu L, Wu J.
europepmc   +1 more source

Bio‐Inspired Sclerotization of Lignin: A Robust Adhesive for Photothermal Wood‐Based Panels

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A high‐performance lignin adhesive is engineered via an insect‐inspired sclerotization strategy involving oxidation and hyperbranched polymer grafting, overcoming lignin's adhesion failure, and yielding a wet shear strength of 1.02–1.21 MPa. The adhesive endows wood‐based panels with photothermal functionality; building energy simulations indicate HVAC‐
Zihao Ye, Zheng Liu, Jiahao Wu, Canling Wen, Tingting Xie, Yonggang Chen, Chusheng Qi, Pingan Song, Qiang Gao   +8 more
wiley   +1 more source