Floresyona, Dita; Goubard, Fabrice; Aubert, Pierre-Henri; Lampre, Isabelle; Mathurin, Jérémie; Dazzi, Alexandre; Ghosh, Srabanti; Beaunier, Patricia; Brisset, François; Remita, Samy; Ramos, Laurence; Remita, Hynd
Highly active poly(3-hexylthiophene) nanostructures for photocatalysis under solar light
Conjugated polymer nanostructures have recently emerged as a new class of very active photocatalysts under solar light. Poly(3-hexylthiophene) (P3HT) is one of the commonly used conjugated polymers for photovoltaics applications. P3HT nanostructures synthesized in soft templates provided by hexagonal mesophases show high photocatalytic activity for degradation of pollutants under both…
Highly Biodegradable and Tough Polylactic Acid–Cellulose Nanocrystal Composite
Muiruri, Joseph K.; Liu, Songlin; Teo, Wern Sze; Kong, Junhua; He, Chaobin
Poly(l-lactide) cellulose nanocrystals-filled nanocomposites were fabricated by blending of cellulose nanocrystals-g-rubber-g-poly(d-lactide) (CNC-rD-PDLA) and commercial PLLA, in which CNC-g-rubber was synthesized by ring opening polymerization (ROP) of d-lactide and a ε-caprolactone mixture to obtain CNC-P(CL-DLA), followed by further polymerization of d-lactide to obtain CNC-rD-PDLA. X-ray…
High molecular weight poly(butylene succinate-co-furandicarboxylate) with 10mol% of BF unit: Synthesis, crystallization-melting behavior and mechanical properties
Peng, Shuangbao; Bu, Zhiyang; Wu, Linbo; Li, Bo-Geng; Dubois, Philippe
In this study, high molecular weight poly(butylene succinate-co-furandicarboxylate) with 10mol% of butylene furandicarboxylate unit (PBSF10) was synthesized and its crystal structure and crystallization-melting behaviors were investigated by means of WAXD, SAXS, DSC and POM. The tensile properties were also assessed. The crystal structure of PBSF10 is found to be the…
High open-circuit voltage ternary organic solar cells based on ICBA as acceptor and absorption-complementary donors
Fang, Jin; Deng, Dan; Zhang, Jianqi; Zhang, Yajie; Lu, Kun; Wei, Zhixiang
Ternary organic solar cells (OSCs) are fabricated with indene-C60 bisadduct (ICBA) as an electron acceptor and the low-band-gap polymer PBDTTT-C-T and the highly crystalline small molecule n-BDT-3T-CNCOO as electron donors. A high open-circuit voltage of 0.98 V is achieved, which is 0.2 V higher than that of ternary OSCs based…
High Performance Graphene Oxide Based Rubber Composites
Mao, Yingyan; Wen, Shipeng; Chen, Yulong; Zhang, Fazhong; Panine, Pierre; Chan, Tung W.; Zhang, Liqun; Liang, Yongri; Liu, Li
In this paper, graphene oxide/styrene-butadiene rubber (GO/SBR) composites with complete exfoliation of GO sheets were prepared by aqueous-phase mixing of GO colloid with SBR latex and a small loading of butadiene-styrene-vinyl-pyridine rubber (VPR) latex, followed by their co-coagulation. During co-coagulation, VPR not only plays a key role in the prevention…
Hybrid Starlike Block Copolymer POSS–(PDMAEMA-b-PNIPAm)8: Thermal Gelation and Its Blends with Poly(vinyl alcohol)
Zhou, Xin; Fan, Xiaoshan; He, Chaobin
A novel thermogelling polyhedral oligomeric silsesquioxane–poly(2-(dimethylamino)ethyl methacrylate-b-N-isopropylacrylamide), POSS–(PDMAEMA-b-PNIPAm)8, star-shaped block copolymer was synthesized by using RAFT polymerization. In aqueous solution this copolymer (≥10 wt %) underwent sol-to-gel transition as the temperature increased. The network structure and rheology properties of…
Hybridizing Carbon Nitride Colloids with a Shell of Water-Soluble Conjugated Polymers for Tunable Full-Color Emission and Synergistic Cell Imaging
Cui, Qianling; Xu, Jingsan; Shen, Guizhi; Zhang, Chao; Li, Lidong; Antonietti, Markus
We present the preparation of a new multicolor emission system constructed from two complementary conjugated materials that are highly photoluminescent, that is, phenyl-modified carbon nitride (PhCN) colloids as the core and water-soluble conjugated polymers (WSCPs) adsorbed as the shell. The fluorescence bands of the PhCN and WSCPs effectively complement each…
Hydrazinium-loaded perovskite solar cells with enhanced performance and stability
Akbulatov, Azat F.; Frolova, Lyubov A.; Anokhin, Denis V.; Gerasimov, Kirill L.; Dremova, Nadezhda N.; Troshin, Pavel A.
In this study, we investigated the effects of partial substitution of methylammonium (MA) with hydrazinium (HA) cations on the optical properties, film morphology, crystal structure and photovoltaic performance of the hybrid perovskites MA1−xHAxPbI3. Planar heterojunction solar cells with an optimal hydrazinium loading demonstrated an enhanced power conversion efficiency of 11.6%…
Impact of aluminum on the structure of geopolymers from the early stages to consolidated material
Benavent, Virginie; Steins, Prune; Sobrados, Isabel; Sanz, Jesus; Lambertin, David; Frizon, Fabien; Rossignol, Sylvie; Poulesquen, Arnaud
The aim of this study is to assess the effects of the addition of aluminum (NaAlO2) into the activating solution on the geopolymerization reactions and the characteristics of the porous network. It was established by liquid state NMR that the speciation of the aluminosilicate oligomers and then the mean degree…
Improving the fracture toughness of epoxy with nanosilica-rubber core-shell nanoparticles
Liu, Songlin; Fan, Xiaoshan; He, Chaobin
Nanocomposites from epoxy and nanosilica-rubber core–shell nanoparticles were fabricated. The soft shell was a copolymer synthesized from caprolactone and meso-lactide and was designed compatible with the cured epoxy system. The core–shell nanoparticles achieved a reasonably good dispersion in the matrix with minor aggregations. With the addition of the nanosilica based…