PMID- 24678627 OWN - NLM STAT- MEDLINE DCOM- 20150413 LR - 20151119 IS - 1520-5827 (Electronic) IS - 0743-7463 (Linking) VI - 30 IP - 13 DP - 2014 Apr 8 TI - Polyelectrolyte-stabilized graphene oxide liquid crystals against salt, pH, and serum. PG - 3715-22 LID - 10.1021/la500553v [doi] AB - Stabilization of colloids is of great significance in nanoscience for their fundamental research and practical applications. Electrostatic repulsion-stabilized anisotropic colloids, such as graphene oxide (GO), can form stable liquid crystals (LCs). However, the electrostatic field would be screened by ions. To stabilize colloidal LCs against electrolyte is an unsolved challenge. Here, an effective strategy is proposed to stabilize GO LCs under harsh conditions by association of polyelectrolytes onto GO sheets. Using sodium poly(styrene sulfonate) (PSS) and poly[2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide (PMEDSAH), a kind of polyzwitterion, GO LCs were well-maintained in the presence of NaCl (from 0 M to saturated), extreme pH (from 1 to 13), and serum. Moreover, PSS- or PMEDSAH-coated chemically reduced GO (rGO) also showed stability against electrolyte. FAU - Zhao, Xiaoli AU - Zhao X AD - Ministry of Education (MOE) Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University , 38 Zheda Road, Hangzhou, Zhejiang 310027, People's Republic of China. FAU - Xu, Zhen AU - Xu Z FAU - Xie, Yang AU - Xie Y FAU - Zheng, Bingna AU - Zheng B FAU - Kou, Liang AU - Kou L FAU - Gao, Chao AU - Gao C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140328 PL - United States TA - Langmuir JT - Langmuir : the ACS journal of surfaces and colloids JID - 9882736 RN - 0 (Colloids) RN - 0 (Electrolytes) RN - 0 (Methacrylates) RN - 0 (Oxides) RN - 0 (Polystyrenes) RN - 0 (Quaternary Ammonium Compounds) RN - 0 (poly(2-(methacryloyloxy)ethyl dimethyl-(3-sulfopropyl)ammonium hydroxide)) RN - 451W47IQ8X (Sodium Chloride) RN - 70KO0R01RY (polystyrene sulfonic acid) RN - 7782-42-5 (Graphite) SB - IM MH - Colloids MH - Electrolytes MH - Graphite/*chemistry MH - Hydrogen-Ion Concentration MH - Liquid Crystals/*chemistry MH - Methacrylates/*chemistry MH - Oxides MH - Polystyrenes/*chemistry MH - Quaternary Ammonium Compounds/*chemistry MH - Sodium Chloride/chemistry MH - Static Electricity MH - Surface Properties EDAT- 2014/04/01 06:00 MHDA- 2015/04/14 06:00 CRDT- 2014/04/01 06:00 PHST- 2014/04/01 06:00 [entrez] PHST- 2014/04/01 06:00 [pubmed] PHST- 2015/04/14 06:00 [medline] AID - 10.1021/la500553v [doi] PST - ppublish SO - Langmuir. 2014 Apr 8;30(13):3715-22. doi: 10.1021/la500553v. Epub 2014 Mar 28.