Category

Self-assembled material

(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSSelf-assembled materialTechnique

Organic acids interacting with block copolymers have broadened the window that retains isoporous structures

Zhu, Guo-Dong; Yin, Yu-Rong; Li, Zhen-Nan; Qiu, Ya-Yu; Yi, Zhuan; Gao, Cong-Jie

Evaporation is significantly important for the preparation of isoporous membranes from self-assembly and non-solvent induced phase separation (SNIPS). Unfortunately, the time of solvent evaporation that retains isoporous structures is usually rather short, which causes many challenges to fabricate membranes with repeatable and controllable isoporous structures. In the current work, we…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPolymer researchSAXSSelf-assembled materialTechnique

Light-induced healing in azobenzene bridged silsesquioxanes

Galante, María J.; Zucchi, Ileana A.; Oyanguren, Patricia A.; Sáiz, Luciana M.

Intrinsic healable polymers are materials capable of repairing itself through its chemical nature, in order to improve stability and durability and to restore the lost functionalities or properties. In this study, azobenzene (AZO) moieties were incorporated into a previously reported bridged silsesquioxane based on the reaction of isocyanatepropyltriethoxysilane (IPTS) with…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacterizationCustomer publicationsFractal dimensionMaterialNanoparticles & colloidsParticlesSelf-assembled materialShapeSize

Thermoreversible crystallization-driven aggregation of diblock copolymer nanoparticles in mineral oil

Derry, Matthew J.; Mykhaylyk, Oleksandr O.; Ryan, Anthony J.; Armes, Steven P.

A poly(behenyl methacrylate)37 (PBeMA37) macromolecular chain transfer agent is utilized for the reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization of benzyl methacrylate (BzMA) directly in mineral oil at 90 °C. Polymerization-induced self-assembly (PISA) occurs under these conditions, yielding a series of sterically-stabilized PBeMA37-PBzMA …
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialPhase analysisPolymer researchSelf-assembled materialTechniqueWAXS

How cyclic chain topology can reduce the crystallization rate of poly(3-hexylthiophene) and promote the formation of liquid crystalline phases in comparison with linear analogue chains

Maiz, Jon; Liu, Guoming; Ruipérez, Fernando; Delbosc, Nicolas; Coulembier, Olivier; Wang, Dujin; Müller, Alejandro J.

We have studied how cyclic topology affects the crystallization and morphology of π-conjugated poly(3-hexylthiophene) (P3HT) molecules by comparing linear and cyclic analogues for the first time, with three different chain lengths. We employ a range of experimental techniques including wide-angle X-ray scattering (WAXS), polarized light optical microscopy (PLOM), differential scanning…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialPhase analysisPolymer researchSAXSSelf-assembled materialTechniqueTemperatureWAXS

Topochemical polymerization of hierarchically ordered diacetylene monomers within the block copolymer domains

Krishnan, Deepthi; B, Amal Raj R.; Gowd, E. Bhoje

Integration of polymerizable small molecules within block copolymer based supramolecules provides a new strategy to generate functional materials. Herein we report hydrogen-bonding complexes of photopolymerizable 10,12-pentacosadyionic acid (PCDA) and polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP). We systematically investigate how annealing conditions affect the hierarchical ordering and…
sergio.rodrigues@xenocs.com
25 November 2019
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialNanoparticles & colloidsParticlesSAXSSelf-assembled materialTechnique

Hierarchical self-assembly of 3D lattices from polydisperse anisometric colloids

Luo, Binbin; Kim, Ahyoung; Smith, John W.; Ou, Zihao; Wu, Zixuan; Kim, Juyeong; Chen, Qian

Anisometric colloids—which have both nanometer and micrometer dimensions—combine features of their two constituent length scales. Here, using optical microscopy and modeling, the authors find that highly polydisperse anisometric colloids self-assemble into 3D, periodic lattices in a manner hardly inaccessible to nano- or micron-scale…
sergio.rodrigues@xenocs.com
25 November 2019
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialNanoparticles & colloidsParticlesPhase analysisSAXSSelf-assembled materialTechnique

Precise Self-Assembly of Nanoparticles into Ordered Nanoarchitectures Directed by Tobacco Mosaic Virus Coat Protein

Zhang, Jianting; Zhou, Kun; Zhang, Yejun; Du, Mingming; Wang, Qiangbin

Self-assembly guided by biological molecules is a promising approach for fabricating predesigned nanostructures. Protein is one such biomolecule possessing deterministic 3D crystal structure and peptide information, which acts as a good candidate for templating functional nanoparticles (fNPs). However, inadequate coordination efficacy during the establishment of interfacial interactions with fNPs…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacterizationCustomer publicationsLiquid crystalsMaterialPhase analysisPolymer researchSAXSSelf-assembled materialTechniqueTemperatureWAXS

Multiscale Self-Assembly of a Phenyl-Flanked Diketopyrrolopyrrole Derivative: A Solution-Processable Building Block for π-Conjugated Supramolecular Polymers

Wang, Kai; Bohra, Hassan; Gonçalves, Rui A.; Bhatnagar, Harshangda; Wu, Yingjie; Wang, Xiaochen; Wang, Zheng; Wei, Xin; Lam, Yeng Ming; Wang, Mingfeng

We report a solution-processable π-conjugated molecular building block (denoted as PhDPP) consisting of a rigid and planar core of phenyl-flanked diketopyrrolopyrrole and “soft” branched alkoxy chains that endow the solubility in a variety of organic solvents. Intermolecular hydrogen bonding in PhDPP was revealed in nonpolar solvents above a threshold of…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialNanoparticles & colloidsParticlesPhase analysisSAXSSelf-assembled materialTechnique

Scalable preparation of alternating block copolymer particles with inverse bicontinuous mesophases

Lv, Fei; An, Zesheng; Wu, Peiyi

Block copolymer particles with controlled morphologies play a vital role in materials science and nanotechnology. Here the authors show a scalable preparation of amphiphilic alternating block polymer particles with inverse bicontinuous mesophases via polymerization-induced…
sergio.rodrigues@xenocs.com
25 November 2019
(Natural) polymersCharacteristic dimensionCustomer publicationsGIWAXSRenewable energySelf-assembled material

Efficient perovskite photovoltaic devices using chemically doped PCDTBT as a hole-transport material

Wong-Stringer, Michael; Bishop, James E.; Smith, Joel A.; Mohamad, David K.; Parnell, Andrew J.; Kumar, Vikas; Rodenburg, Cornelia; Lidzey, David G.

It is shown that by chemically doping the carbazole-based conjugated polymer PCDTBT using the molecular materials TBP, LiTFSI and FK209, its conductivity can be increased by a factor of 105 times. Such doped PCDTBT films are used as a hole transport material (HTM) for standard architecture (CH(NH2)2PbI3)0.85(CH3NH3PbBr3)0.15 perovskite solar cells…
Xenocs
12 March 2019