Journal
CHEMICAL COMMUNICATIONS
Volume -, Issue 3, Pages 219-227Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b009180o
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Derivatives of tetraethynylethene (TEE, 3,4-diethynylhex-3-ene-1,5-diyne) and (E)-1,2-diethynylethene ((E)-DEE, (E)-hex-3-ene-1,5-diyne) provide a unique class of pi -conjugated building blocks for modular construction of one- and two-dimensional carbon-rich scaffolds such as monodisperse, linearly pi -conjugated oligomers extending in length beyond 10 nm or large macrocyclic all-carbon cores. Lateral functionalisation of these novel chromophores with donor-acceptor substituents strongly enhances their advanced materials properties and leads to exceptional third-order optical nonlinearities. New photochromic molecules were prepared which undergo photochemical cis --> trans and trans --> cis isomerisation without competing thermal isomerisation pathways, thereby paving the way for applications as light-driven molecular switches in optoelectronic devices.
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