0000000001303488
AUTHOR
Atsushi Shishido
Photoalignment and Surface-Relief-Grating Formation are Efficiently Combined in Low-Molecular-Weight Halogen-Bonded Complexes
It is demonstrated that halogen bonding can be used to construct low-molecular-weight supramolecular complexes with unique light-responsive properties. In particular, halogen bonding drives the formation of a photoresponsive liquid-crystalline complex between a non-mesogenic halogen bond-donor molecule incorporating an azo group, and a non-mesogenic alkoxystilbazole moiety, acting as a halogen bond-acceptor. Upon irradiation with polarized light, the complex exhibits a high degree of photoinduced anisotropy (order parameter of molecular alignment > 0.5). Moreover, efficient photoinduced surface-relief-grating (SRG) formation occurs upon irradiation with a light interference pattern, with…
Supramolecular control of liquid crystals by doping with halogen-bonding dyes
Introducing photochromic or polymeric dopants into nematic liquid crystals is a well-established method to create stimuli-responsive photonic materials with the ability to "control light with light". Herein, we demonstrate a new material design concept by showing that specific supramolecular interactions between the host liquid crystal and the guest dopants enhance the optical performance of the doped liquid crystals. By varying the type and strength of the dopant-host interaction, the phase-transition temperature, the order parameter of the guest molecules, and the diffraction signal in response to interference irradiation, can be accurately engineered. Our concept points out the potential…
CCDC 1535157: Experimental Crystal Structure Determination
Related Article: Jaana Vapaavuori, Antti Siiskonen, Valentina Dichiarante, Alessandra Forni, Marco Saccone, Tullio Pilati, Christian Pellerin, Atsushi Shishido, Pierangelo Metrangolo, Arri Priimagi|2017|RSC Advances|7|40237|doi:10.1039/C7RA06397K
CCDC 883070: Experimental Crystal Structure Determination
Related Article: Arri Priimagi, Marco Saccone, Gabriella Cavallo, Atsushi Shishido, Tullio Pilati, Pierangelo Metrangolo and Giuseppe Resnati|2012|Adv.Mater.|24|OP345|doi:10.1002/adma.201204060