doi:10.1021/cm401849fengGonzález, L.Gimeno, N.Tejedor, R.M.Polo, V.Ros, M.B.Uriel, S.Serrano, J.L.Halogen-bonding complexes based on bis(iodoethynyl)benzene units: A new versatile route to supramolecular materialsART-2013-84140Iodoalkynes [1,4-bis(iodoethynyl)benzene (p-BIB) and 1,3-bis(iodoethynyl)benzene (m-BIB)] have been used successfully to prepare halogen bonding complexes with a range of 4-pyridine derivatives showing liquid crystalline organizations. The trimeric halogen-bonded complexes obtained from p-BIB have a rod-like structure and exhibited high order calamitic phases (SmB and G). In contrast, m-BIB gives rise to bent-shaped structures that display SmAP-like mesophases. Furthermore it was found that the presence of three and five aromatic rings in these halogen-bonding complexes promotes calamitic mesophases while seven rings are required to stabilize bent-core mesophases. The formation of halogen bonding in the complexes was confirmed by several techniques, including FT-IR, XPS, and single crystal X-ray diffraction and the strength of the bonds was evaluated by DFT calculations2013http://zaguan.unizar.es/record/14974310.1021/cm401849fhttp://zaguan.unizar.es/record/149743oai:zaguan.unizar.es:149743info:eu-repo/grantAgreement/ES/DGA/E04info:eu-repo/grantAgreement/ES/MICINN/CTQ2012-35692info:eu-repo/grantAgreement/ES/MICINN/MAT2009-14636-C03-01info:eu-repo/grantAgreement/ES/MICINN/MAT2011-27978-C02-01info:eu-repo/grantAgreement/ES/MICINN/MAT2012-38538-C03-01Chemistry of materials 25, 22 (2013), 4503-4510All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess