Light-driven reversible surface functionalization with anthracenes: visible light writing and mild UV erasing
作者:Tanja K. Claus、Siham Telitel、Alexander Welle、Martin Bastmeyer、Andrew P. Vogt、Guillaume Delaittre、Christopher Barner-Kowollik
DOI:10.1039/c6cc09897e
日期:——
We introduce a methodology to reversibly pattern planar surfaces via the light-induced dimerization of anthracenes, particularly involving a 9-triazolylanthracene motif.
Multicolor Mechanofluorophores for the Quantitative Detection of Covalent Bond Scission in Polymers
作者:Christoph Baumann、Maria Stratigaki、Silvia P. Centeno、Robert Göstl
DOI:10.1002/anie.202101716
日期:2021.6.7
The fracture of polymer materials is a multiscale process starting with the scission of a single molecular bond advancing to a site of failure within the bulk. Quantifying the bonds broken during this process remains a big challenge yet would help to understand the distribution and dissipation of macroscopic mechanical energy. We here show the design and synthesis of fluorogenic molecular optical force
Photochemical Cleavage of the Axial Group Attached to the Central Carbon Atom of Triazatriangulene
作者:Soichi Yokoyama、Takashi Hirose、Kenji Matsuda
DOI:10.1246/cl.140897
日期:2015.1.5
Photocleavage reaction of triazatriangulene (TATA) leuco derivatives bearing axial substituents proceeded quantitatively in polar solvents with quantum yields (Φr) of up to 0.56. The photoreaction ...
Gold-Catalyzed Synthesis of Dibenzopentalenes - Evidence for Gold Vinylidenes
作者:A. Stephen K. Hashmi、Marcel Wieteck、Ingo Braun、Pascal Nösel、Linda Jongbloed、Matthias Rudolph、Frank Rominger
DOI:10.1002/adsc.201200086
日期:2012.3
converted to dibenzopentalenes in good yields by gold(I) catalysts. The participation of gold acetylides could be proven by the direct conversion to the corresponding gem‐diaurated dibenzopentalenes with a gold catalyst. From an experiment with a gold acetylide complex and stoichiometric amounts of the gold “catalyst” the corresponding gem‐diaurated complex of a dibenzopentalene could be obtained and characterized
Synthesis of polyphenylene derivatives by thermolysis of enediynes and dialkynylaromatic monomers
作者:Jens A John、James M Tour
DOI:10.1016/s0040-4020(97)00977-0
日期:1997.11
Described are the syntheses of substituted enediynes and dialkynylaromatics using Pd- or cross coupling procedures. The products were then thermalized to afford the corresponding poly(p-phenylene)s, poly(1,4-naphthalene)s, poly(benzo[c]thiophene)s, and poly(dibenzothiophene)s. Fifteen examples are provided that show the scope of the polymerization process based upon substituent patterns and cyclization