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Kim, Dongwoo,Jon, Sangyong,Lee, Hyung-Kun,Baek, Kangkyun,Oh, Nam-Keun,Zin, Wang-Cheol,Kim, Kimoon Royal Society of Chemistry 2005 Chemical communications Vol.2005 No.44
<P>New wedge-shaped thermotropic liquid crystalline materials containing a guanidinium moiety at the apex organize into various supramolecular structures such as hexagonal columnar, rectangular columnar and <I>Pm</I>3<I>n</I> cubic mesophases depending on anions illustrating guest-directed self-organization in mesophases.</P> <P>Graphic Abstract</P><P>New wedge-shaped thermotropic liquid crystalline materials containing a guanidinium moiety at the apex organize into various supramolecular structures such as hexagonal columnar, rectangular columnar and <I>Pm</I>3<I>n</I> cubic mesophases depending on anions illustrating guest-directed self-organization in mesophases. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b511517e'> </P>
Sung, Daekyung,Park, Sangjin,Jon, Sangyong American Chemical Society 2012 Langmuir Vol.28 No.9
<P>The surface modifications of plastic or glass substrate and thesubsequent immobilization of biomolecules onto the surfaces has beena central feature of the fabrication of biochips. To this end, wedesigned and synthesized new epoxide-containing random copolymersthat form stable polymer adlayers on plastic or glass surface andsubsequently react with amine or sulfhydryl functional groups of biomoleculesunder aqueous conditions. Epoxide-containing random copolymers weresynthesized by radical polymerization of three functional monomers:a monomer acting as an anchor to the surfaces, a PEG group for preventingnonspecific protein adsorption, and an epoxide group for conjugatingto biomolecules. Polymer coating layers were facilely formed on cyclicolefin copolymer (COC) or glass substrate by simply dipping each substrateinto a solution of each copolymer. The polymer-coated surfaces characterizedby a contact angle analyzer and X-ray photoelectron spectroscopy (XPS)showed very low levels of nonspecific immunoglobulin G (IgG) adsorptioncompared to the uncoated bare surface (control). Using a microcontactprinting (μCP) method, antibodies as representative biomoleculescould be selectively attached onto the copolymers-coated glass orCOC surface with high signal-to-noise ratios.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/langd5/2012/langd5.2012.28.issue-9/la204898y/production/images/medium/la-2011-04898y_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/la204898y'>ACS Electronic Supporting Info</A></P>