Please use this identifier to cite or link to this item:
Title: Cyclodextrin-functionalized graphene nanosheets, and their host-guest polymer nanohybrids
Authors: Xu, L.Q.
Yee, Y.K.
Neoh, K.-G. 
Kang, E.-T. 
Fu, G.D.
Keywords: Host-guest interaction
Reduced graphene oxide
Issue Date: 19-Apr-2013
Citation: Xu, L.Q., Yee, Y.K., Neoh, K.-G., Kang, E.-T., Fu, G.D. (2013-04-19). Cyclodextrin-functionalized graphene nanosheets, and their host-guest polymer nanohybrids. Polymer (United Kingdom) 54 (9) : 2264-2271. ScholarBank@NUS Repository.
Abstract: β-Cyclodextrin (CD)-functionalized (grafted) reduced graphene oxide (RGO-g-CD) nanosheets were prepared via solution-based synthesis in one-pot, involving the simultaneous solvothermal reduction of graphene oxide (GO) and nitrene addition of azido-labeled CD to RGO. Being water soluble, the grafted CD imparted good dispersibility and stability to the RGO-g-CD nanosheets in water. The RGO-g-CD nanosheets were further functionalized with poly(N- isopropylacrylamide-co-vinylferrocene(II)) (PNIPAM-Fc) and ferrocene-modified hyperbranched polyglycerol (HPG-Fc) via host-guest inclusion complexation of CD and ferrocene (Fc) moieties to form RGO-g-CD/Fc-PNIPAM and RGO-g-CD/Fc-HPG nanohybrids, respectively. Both RGO-g-CD/Fc-PNIPAM and RGO-g-CD/Fc-HPG nanohybrids were dispersible and stable in a wider range of solvents than the RGO-g-CD precursor nanosheets. Due to the thermoresponsive behavior of the attached PNIPAM moieties, the RGO-g-CD/Fc-PNIPAM exhibited reversible dispersibility in aqueous solution at a lower critical solution temperature (LCST) of 28 C and thus could potentially be developed into thermoresponsive nanodevices. The RGO-g-CD/Fc-HPG nanohybrids exhibited low cytotoxicity towards 3T3 fibroblasts in 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) cell viability assay.
Source Title: Polymer (United Kingdom)
ISSN: 00323861
DOI: 10.1016/j.polymer.2013.02.043
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Oct 17, 2018


checked on Oct 9, 2018

Page view(s)

checked on Oct 20, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.