Zhou, Hui-Jun; Yang, Guan-Wen; Zhang, Yao-Yao; Xu, Zhi-Kang; Wu, Guang-Peng
Bioinspired Block Copolymer for Mineralized Nanoporous Membrane
Homoporous membranes fabricated by self-assembled block copolymers (BCPs) have gained growing attention for their easy availability of well-ordered nanostructures for precise separation. However, it remains a challenges to improve the mechanical integrity, hydrophilic properties, and pore functionalities of the existing systems. To this end, we report an organic–mineral composite hybrid…
Ordered Mesoporous TiO2 Gyroids: Effects of Pore Architecture and Nb-Doping on Photocatalytic Hydrogen Evolution under UV and Visible Irradiation
Dörr, Tobias Sebastian; Deilmann, Leonie; Haselmann, Greta; Cherevan, Alexey; Zhang, Peng; Blaha, Peter; Oliveira, Peter William de; Kraus, Tobias; Eder, Dominik
Pure and Nb-doped TiO2 photocatalysts with highly ordered alternating gyroid architecture and well-controllable mesopore size of 15 nm via co-assembly of a poly(isoprene)-block-poly(styrene)-block-poly(ethylene oxide) block copolymer are synthesized. A combined effort by electron microscopy, X-ray scattering, photoluminescence, X-ray photoelectron spectroscopy, Raman spectroscopy, and density…
Loss of bottlebrush stiffness due to free polymers
Storm, Ingeborg M.; Kornreich, Micha; Voets, Ilja K.; Beck, Roy; Vries, Renko de; Stuart, Martien A. Cohen; Leermakers, Frans A. M.
A recently introduced DNA-bottlebrush system, which is formed by the co-assembly of DNA with a genetically engineered cationic polymer-like protein, is subjected to osmotic stress conditions. We measured the inter-DNA distances by X-ray scattering. Our co-assembled DNA-bottlebrush system is one of the few bottlebrushes known to date that shows liquid…
Development of Thick Superhydrophilic TiO2–ZrO2 Transparent Coatings Realized through the Inclusion of Poly(methyl methacrylate) and Pluronic-F127
Simon, Sanu M.; Chandran, Anoop; George, Gejo; Sajna, M. S.; Valparambil, Prakashan; Kumi-Barmiah, Eric; Jose, Gin; Biju, P. R.; Joseph, Cyriac; Unnikrishnan, N. V.
A thick coating of hierarchically porous double-templated TiO2–ZrO2–PMMA–PF127 with excellent self-cleaning properties and high transmittance has been developed for the first time on glass substrates using a simple dip-coating technique. Comparative studies of this sample with a thick and transparent coating of single-templated TiO2–ZrO2–PMMA have been performed to probe the…
Luminescent Water Dispersible Microporous Polymeric Nanospheres
James, Alex; Derry, Matthew; Train, Jennifer; Dawson, Robert
Water-dispersible porous polymeric dispersions (PPDs) have been synthesised by reversible addition-fragmentation chain transfer mediated polymerisation-induced self-assembly (RAFT-mediated PISA). The core-shell particles posses a microporous core formed from divinylbenzene and fumaronitrile while the outer polyethylene glycol shell enables the particles to be dispersible in a wide range of…
An Insight Into the Physico-Mechanical Signatures of Silylated Graphene Oxide in Poly(ethylene methyl acrylate) Copolymeric Thermoplastic Matrix
Ganguly, Sayan; Mondal, Subhadip; Das, Poushali; Bhawal, Poushali; Das, Tushar Kanti; Ghosh, Sabyasachi; Remanan, Sanjay; Das, Narayan Chandra
Dispersion of graphene as nano-building block in polymer matrix is challenging for developing high strength polymer nanocomposites. Tuning of surface polarity can be an effective pathway to…
Uniaxial and Mixed Orientations of Poly(ethylene oxide) in Nanoporous Alumina Studied by X-ray Pole Figure Analysis
Su, Cui; Shi, Guangyu; Li, Xiaolu; Zhang, Xiuqin; Müller, Alejandro J.; Wang, Dujin; Liu, Guoming
The orientation of polymers under confinement is a basic, yet not fully understood phenomenon. In this work, the texture of poly(ethylene oxide) (PEO) infiltrated in nanoporous anodic alumina oxide (AAO) templates was investigated by X-ray pole figures. The influence of geometry and crystallization conditions, such as pore diameter, aspect ratio,…
Studies on the effect of the J-domain on the substrate binding domain (SBD) of Hsp70 using a chimeric human J-SBD polypeptide
Tiroli-Cepeda, Ana O.; Seraphim, Thiago V.; Pinheiro, Glaucia M. S.; Souto, Denio E. P.; Kubota, Lauro T.; Borges, Júlio C.; Barbosa, Leandro R. S.; Ramos, Carlos H. I.
DnaJ/Hsp40 chaperones deliver unfolded proteins and stimulate the ATPase activity of DnaK/Hsp70 via their J-domain. However, the interaction is transient, creating a challenge for detailed analysis. We investigated whether it would be possible to gain further understanding of this interaction by engineering a chimeric polypeptide where the J-domain of Hsp40…
All-small-molecule organic solar cells based on an electron donor incorporating binary electron-deficient units
Feng, Guitao; Xu, Yunhua; Zhang, Jianqi; Wang, Zhaowei; Zhou, Yi; Li, Yongfang; Wei, Zhixiang; Li, Cheng; Li, Weiwei
In this work, solution-processed organic solar cells with conjugated small molecules both as electron donors and electron acceptors were studied, where the influence of the chemical structures of the donor and acceptor on the device performance was systematically investigated. A small molecular donor incorporating binary electron-deficient units, diketopyrrolopyrrole and pentacyclic…
Spontaneous Form II to I Transition in Low Molar Mass Polybutene-1 at Crystallization Temperature Reveals Stabilization Role of Intercrystalline Links and Entanglements for Metastable Form II Crystals
Qiao, Yongna; Yang, Fei; Lu, Ying; Liu, Peiru; Li, Yuesheng; Men, Yongfeng
Spontaneous Form II to I Transition in Low Molar Mass Polybutene-1 at Crystallization Temperature Reveals Stabilization Role of Intercrystalline Links and Entanglements for Metastable Form II…