The [2+ 2] Cycloaddition‐Retroelectrocyclization (CA‐RE) Click Reaction: Facile Access to Molecular and Polymeric Push‐Pull Chromophores

T Michinobu, F Diederich - Angewandte Chemie International …, 2018 - Wiley Online Library
Abstract The [2+ 2] cycloaddition‐retroelectrocyclization (CA‐RE) reaction between electron‐
rich alkynes and electron‐deficient alkenes is an efficient procedure to create nonplanar …

Modern synthetic avenues for the preparation of functional fluorophores

F de Moliner, N Kielland, R Lavilla… - Angewandte Chemie …, 2017 - Wiley Online Library
Biomedical research relies on the fast and accurate profiling of specific biomolecules and
cells in a non‐invasive manner. Functional fluorophores are powerful tools for such studies …

Unusual length dependence of the conductance in cumulene molecular wires

W Xu, E Leary, S Hou, S Sangtarash… - Angewandte Chemie …, 2019 - Wiley Online Library
Cumulenes are sometimes described as “metallic” because an infinitely long cumulene
would have the band structure of a metal. Herein, we report the single‐molecule …

Sub‐Picosecond Singlet Exciton Fission in Cyano‐Substituted Diaryltetracenes

EA Margulies, YL Wu, P Gawel, SA Miller… - Angewandte …, 2015 - Wiley Online Library
Abstract Thin films of 5, 11‐dicyano‐6, 12‐diphenyltetracene (TcCN) have been studied for
their ability to undergo singlet exciton fission (SF). Functionalization of tetracene with cyano …

Mono‐ and Bis(imidazolidinium ethynyl) Cations and Reduction of the Latter To Give an Extended Bis‐1,4‐([3]Cumulene)‐p‐carboquinoid System

BM Barry, RG Soper, J Hurmalainen… - Angewandte …, 2018 - Wiley Online Library
An extended π‐system containing two [3] cumulene fragments separated by ap‐
carboquinoid and stabilized by two cap** N‐heterocyclic carbenes (NHCs) has been …

Die [2+ 2]‐Cycloadditions‐Retroelektrocyclisierungs (CA‐RE)‐Klick‐Reaktion: ein einfacher Zugang zu molekularen und polymeren Push‐pull‐Chromophoren

T Michinobu, F Diederich - Angewandte Chemie, 2018 - Wiley Online Library
Abstract Die [2+ 2]‐Cycloadditions‐Retroelektrocyclisierungs (CA‐RE)‐Reaktion von
elektronenreichen Alkinen mit elektronenarmen Alkenen ist ein effizientes Verfahren zur …

Porphyrin donor and tunable push–pull acceptor conjugates—experimental investigation of Marcus theory

TA Reekie, M Sekita, LM Urner… - … A European Journal, 2017 - Wiley Online Library
We report on a series of electron donor–acceptor conjugates incorporating a ZnII–porphyrin‐
based electron donor and a variety of non‐conjugated rigid linkers connecting to push–pull …

Push–Pull Buta‐1, 2, 3‐trienes: Exceptionally Low Rotational Barriers of Cumulenic C C Bonds and Proacetylenic Reactivity

P Gawel, YL Wu, AD Finke, N Trapp… - … A European Journal, 2015 - Wiley Online Library
A variety of asymmetrically donor–acceptor‐substituted [3] cumulenes (buta‐1, 2, 3‐trienes)
were synthesized by developed procedures. The activation barriers to rotation ΔG≠ were …

Moderne Strategien zur Synthese funktioneller Fluorophore

F de Moliner, N Kielland, R Lavilla… - Angewandte …, 2017 - Wiley Online Library
Die biomedizinische Forschung ist auf die schnelle, akkurate und nicht‐invasive
Charakterisierung spezifischer Biomoleküle und Zellen angewiesen. Funktionelle …

Structural and electronic effects of stepwise reduction of a tetraaryl [3] cumulene

SN Spisak, MU Bühringer, Z Wei, Z Zhou… - Angewandte …, 2019 - Wiley Online Library
The chemical reduction of a [3] cumulene ([3] TrTol) has been explored using alkali metals.
Mono‐and doubly reduced forms of [3] TrTol were isolated as solvent‐separated ion pairs …