09-08-2011 | Dmitri V. Konarev; Sergey V. Simonov; Salavat S. Khasanov; Rimma N. Lyubovskaya, Dalton Transactions, 2011

The new reduction method for preparation of η2-complexes of fullerenes with nickel–1,3-bis(diphenylphosphino)propane has been developed in which Ni(dppp)Cl2 and C60(C70) mixtures are reduced with sodium tetraphenylborate. Single crystals of the first η2-complex of nickel with fullerene C70: ...

more

09-08-2011 | Huaibin Shen; Hongzhe Wang; Changhua Zhou; Jin Zhong Niu; Hang Yuan; Lan Ma; Lin Song Li, Dalton Transactions, 2011

Here we report a new “green” method to synthesize Zn1 − xCdxSe (x = 0–1) and stable red–green–blue tricolor Zn1 − xCdxSe core/shell nanocrystals using only low cost, phosphine-free and environmentally friendly reagents. The first excitonic absorption peak and photoluminescence (PL) position ...

more

09-08-2011 | L. Magnus Bergström; Makoto Aratono, Soft Matter, 2011

Expressions for the critical micelle concentration (cmc) and activity coefficients as functions of surfactant composition in mixtures of two identically charged monovalent ionic surfactants are derived from the nonlinear Poisson–Boltzmann (PB) theory. For the special case of no added salt, ...

more

08-08-2011 | Anđela Šarić; Angelo Cacciuto, Soft Matter, 2011

We perform numerical simulations to study self-assembly of nanoparticles mediated by an elastic planar surface. We show how the nontrivial elastic response to deformations of these surfaces leads to anisotropic interactions between the particles resulting in aggregates having different ...

more

08-08-2011 | Lucas Goehring; William J. Clegg; Alexander F. Routh, Soft Matter, 2011

Fracture mechanics successfully predicts when cracks will grow. Describing the path that cracks follow, however, has remained difficult. The study of crack paths has recently focused on a single experimental system, that of thermally quenched glass, where straight, wavy, helical, and branched ...

more

08-08-2011 | Jae Il Kim; Sang Hyo Lee; Hwi Ju Kang; Doo Yeon Kwon; Da Yeon Kim; Won Seok Kang; Jae Ho Kim; Moon Suk Kim, Soft Matter, 2011

Thermogelling block copolymers are central to a variety of biomedical applications. Here, we examined the thermal phase transition behavior of the MPEG-b-PCL diblock copolymer (MC) with carboxyl (MC–COOH) and amine (MC–NH2) groups, and their salt forms (MC–COO−Na+ and MC–NH3+Cl−) at the chain ...

more

08-08-2011 | Joseph W. Tavacoli; Job H. J. Thijssen; Paul S. Clegg, Soft Matter, 2011

We report the experimental discovery of a self-assembled capsule, with density set by interfacial glass beads and an internal bubble, that automatically performs regular oscillations up and down a vial in response to a temperature gradient. Similar composites featuring interfacial particles ...

more

08-08-2011 | Jian Wu; Seok Kim; Weiqiu Chen; Andrew Carlson; Keh-Chih Hwang; Yonggang Huang; John A. Rogers, Soft Matter, 2011

By pressure-controlled surface contact area, reversible adhesion can be achieved with strengths tunable by 3 orders of magnitude. This capability facilitates robust transfer printing of active materials and devices onto any surface for the development of stretchable and/or curvilinear ...

more

08-08-2011 | Dong Wook Chang; Gyung-Joo Sohn; Liming Dai; Jong-Beom Baek, Soft Matter, 2011

A new class of smart complexes with reduced graphene oxide (rGO) and fluorescent amphiphilic dendrimers with triphenylamine cores, benzothiadiazole branches and poly(ethylene oxide) shells (RD) were prepared. The RD can adsorb onto rGO to enhance the dispersibility of rGO in aqueous media. ...

more

08-08-2011 | Dongshi Zhang; Feng Chen; Qing Yang; Jinhai Si; Xun Hou, Soft Matter, 2011

This paper reports on the mutual wetting transitions between anisotropic and isotropic on directional structures fabricated by femtosecond (fs) laser. The directional structures are composed of flat Si triangular patterns and fs laser induced spikes. After chemical deposition of a layer of ...

more