Gerbelli, Barbara Bianca; da Silva, Emerson Rodrigo; Miranda Soares, Bruna; Alves, Wendel Andrade; Andreoli de Oliveira, Elisabeth
Multilamellar-to-Unilamellar Transition Induced by Diphenylalanine in Lipid Vesicles
In the present work, we investigate the effect of two short phenylalanine-based peptides on lipid membranes. A simplified model membrane composed of lecithin vesicles was used to incorporate different amounts of the two amino acid sequences, the dimmer l,l-diphenylallanine (FF) and the trimmer cysteine-diphenylallanine (CFF). Spectroscopic and scattering techniques were…
Micro/macro-stress relationship and local stress distribution in polyethylene spherulites upon uniaxial stretching in the small strain domain
Xiong, Bijin; Lame, Olivier; Seguela, Roland; Men, Yongfeng
Local stress of polyethylene spherulites under uniaxial stretching in small strain domain has been investigated by in-situ wide angle X-ray diffraction (WAXD) in comparison with macroscopic stress. Particular attention is paid to the elastic strain range. The local stress in equatorial and polar regions both increase in absolute value and…
Mesoporous implantable Pt/SrTiO3:C,N nanocuboids delivering enhanced photocatalytic H2-production activity via plasmon-induced interfacial electron transfer
Tamiolakis, Ioannis; Liu, Dong; Xiao, Fang-Xing; Xie, Jian; Papadas, Ioannis T.; Salim, Teddy; Liu, Bin; Zhang, Qichun; Choulis, Stelios A.; Armatas, Gerasimos S.
Band edge engineering of semiconductor nanostructures is one of the most appealing approaches to enhance light absorption, carrier separation and, ultimately, solar to fuel conversion efficiency. In this study, we devise a facile polymer-assisted sol-gel chemical method to prepare highly porous, crystalline implanted SrTiO3 (STO) nanoparticles and demonstrate their performance…
Layered Double Hydroxide Nanoplatelets with Ultrahigh Specific Surface Area for Significantly Enhanced Crystallization Rate and Thermal Stability of Polypropylene
Nagendra, Baku; Joseph, Angel Mary; Sana, Balakondareddy; Jana, Tushar; Gowd, E. Bhoje
A facile method for the simultaneous delamination and the lateral size reduction of layered double hydroxides (LDH) is reported. This method directly resulted in the delaminated mesoporous LDH nanoplatelets (nanodot LDH) with the high specific surface area (lateral dimensions as low as 10–30 nm and featured a thickness of ∼1…
Inorganically coated colloidal quantum dots in polar solvents using a microemulsion-assisted method
Acebrón, María; Herrera, Facundo C.; Mizrahi, Martín; Navío, Cristina; Bernardo-Gavito, Ramón; Granados, Daniel; Requejo, Félix G.; Juarez, Beatriz H.
The dielectric nature of organic ligands capping semiconductor colloidal nanocrystals (NCs) makes them incompatible with optoelectronic applications. For this reason, these ligands are regularly substituted through ligand-exchange processes by shorter (even atomic) or inorganic ones. In this work, an alternative path is proposed to obtain inorganically coated NCs. Differently to…
Ion extraction applications of bilayer-structured hybrid silicas
Besnard, R.; Winkler, R.; Arrachart, G.; Cambedouzou, J.; Pellet-Rostaing, S.
Materials Chemistry Frontiers, 2018, vol 2, 5, pp. 1031-1039DOI:10.1039/C8QM00022KVisit the full articleBack to the overview
Intrinsically disordered N-terminal domain of the Helicoverpa armigera Ultraspiracle stabilizes the dimeric form via a scorpion-like structure
Wycisk, Krzysztof; Tarczewska, Aneta; Kaus-Drobek, Magdalena; Dadlez, Michał; Hołubowicz, Rafał; Pietras, Zbigniew; Dziembowski, Andrzej; Taube, Michał; Kozak, Maciej; Orłowski, Marek; Ożyhar, Andrzej
Nuclear receptors (NRs) are a family of ligand-dependent transcription factors activated by lipophilic compounds. NRs share a common structure comprising three domains: a variable N-terminal domain (NTD), a highly conserved globular DNA-binding domain and a ligand-binding domain. There are numerous papers describing the molecular details of the latter two globular…
Initial lamellar thickness dependency of recrystallization behavior of poly(4-methyl-1-pentene)
Chen, Ran; Lu, Ying; Jiang, Zhiyong; Men, Yongfeng
The isothermal crystallization and subsequent melting process in semicrystalline poly(4-methyl-1-pentene) were investigated via temperature-dependent small- and wide-angle X-ray scattering and Flash DSC techniques. In a phase diagram of inversed crystalline lamellar thickness and temperature, the crystallization and melting lines can be described by two linear dependencies of different slopes and…
Influence of processing conditions on mechanical properties of blends of styrenic block copolymer and poly(phenylene oxide): Miscibility and microdomain size
Yu, Xiangtian; Wang, Xiang; Zhang, Aiming; Zhou, Tao
The effect of processing conditions on mechanical properties of poly(styrene-b-ethylene-co-butylene-b-styrene) (SEBS) and poly(2,6-dimethy-1,4-phenylene oxide) (PPO) blends were investigated. Differential scanning calorimetry and small angle X-ray scattering were used to study the miscibility and d-spacing of the blends. The processing temperature plays an important role in mechanical properties.…
Influence of fluorinated extractant aggregation in diluent on extraction of salicylic acid: Evidence from equilibrium, SAXS and molecular dynamics simulation
Wu, Xue; Chang, Zhidong; Feng, Jingge; Dang, Hui; Uslu, Hasan; Li, Wenjun
In order to get optimal extraction performance as well as ultra-low solvent residual, the extraction behavior of tris(2,2,3,3,4,4,4-heptafluorobutyl) phosphate (FTBP) dissolved in 2,3,4,5,6-Pentafluorotoluene (FB) was evaluated to investigate the influence of the aggregation state on the extraction of salicylic acid (SA). The effect of SA distribution and water content on…