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Tuning the thermal conductivity of methylammonium lead halide by the molecular substructure

20.08.2016 | Claudia Caddeo; Claudio Melis; Maria Ilenia Saba; Alessio Filippetti; Luciano Colombo; Alessandro Mattoni, Physical Chemistry Chemical Physics, 2016

By using state-of-the-art atomistic methods we provide an accurate estimate of thermal conductivity of methylammonium lead halide as a function of sample size and temperature, in agreement with experimental works. We show that the thermal conductivity of methylammonium lead halide is ...

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Rapid real-time PCR and high resolution melt analysis in a self-filling thermoplastic chip

20.08.2016 | A. Sposito; V. Hoang; D. L. DeVoe, Lab on a Chip, 2016

A microfluidic platform designed for point-of-care PCR-based nucleic acid diagnostics is described. Compared to established microfluidic PCR technologies, the system is unique in its ability to achieve exceptionally rapid PCR amplification in a low cost thermoplastic format, together with high ...

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Role of the Deposition Temperature on the Self-Assembly of the Non-Planar Molecule Benzene- 1,3,5- triphosphonic acid (BTP) at the Liquid-Solid Interface

20.08.2016 | Doan Chau Yen Nguyen; Lars Smykalla; Michael Mehring; Michael Hietschold, Physical Chemistry Chemical Physics, 2016

Benzene-1,3,5-triphosphonic acid (BTP) contains three non‒planar phosphonic acid groups which enable three‒dimensional hydrogen bonding. Because of these versatile 3D functional groups, BTP is an interesting intermediate to design both 2D and 3D supramolecular hydrogen‒bonded architectures and ...

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Charge transfer reactions between gas-phase hydrated electrons, molecular oxygen and carbon dioxide at temperatures of 80–300 K

20.08.2016 | Amou Akhgarnusch; Wai Kit Tang; Han Zhang; Chi-Kit Siu; Martin K. Beyer, Physical Chemistry Chemical Physics, 2016

The recombination reactions of gas-phase hydrated electrons (H2O)n˙− with CO2 and O2, as well as the charge exchange reaction of CO2˙−(H2O)n with O2, were studied by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry in the temperature range T = 80–300 K. Comparison of the rate ...

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Rheology of polyacrylonitrile‐based precursor polymers produced from controlled (RAFT) and conventional polymerization: Its role in solution spinning

20.08.2016 | J. Kaur, K. Millington, J.Y. Cai, Journal of Applied Polymer Science, 2016

ABSTRACT Polymer solutions in dimethyl sulfoxide (DMSO) as a solvent, made from reversible addition fragmentation chain transfer (RAFT)‐mediated polyacrylonitrile (RAFT¥ PAN) terpolymer with molecular weight (MW) of 260,000 g/mol and dispersity (Ð) of 1.29, behave differently under applied ...

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Effect of an alkalized‐modified halloysite on PLA crystallization, morphology, mechanical, and thermal properties of PLA/halloysite nanocomposites

20.08.2016 | Jianhua Guo, Junxia Qiao, Xin Zhang, Journal of Applied Polymer Science, 2016

ABSTRACT Poly(lactic acid) (PLA)/alkalized halloysite nanotube (HNTa) nanocomposites were prepared by melt mixing. The morphology, crystallization behavior, mechanical properties, and thermal stability of the nanocomposites were investigated in comparison with those of the pristine PLA. HNTa ...

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Morphology modulation of gas‐foamed, micrometric, hollow polystyrene particles

20.08.2016 | Vincenzo Contaldi, Luigi Imperato, Silvia Orsi, Ernesto Di Maio, Paolo Antonio Netti, Salvatore Iannace, Journal of Applied Polymer Science, 2016

ABSTRACT In this article, we reports the effects of the processing conditions on the morphological and hollow attributes of polystyrene micrometric hollow particles produced by the use of a recently developed technique based on the gas foaming of spherical, dense particles. By modulating the ...

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Magnetic field effects of photocarrier generation in bulk heterojunctions at low temperature

20.08.2016 | H. Tajima; Y. Nishioka; S. Sato; T. Suzuki; M. Kimata, Dalton Transactions, 2016

We report an experimental investigation of the magnetic field effect (MFE) in polymer bulk heterojunction devices at temperatures below 10 K using photocarrier extraction by linearly increasing voltages. The examined devices were composed of an active layer of poly(3-hexylthiophene) and ...

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Giant spin–phonon bottleneck effects in evaporable vanadyl-based molecules with long spin coherence

20.08.2016 | L. Tesi; A. Lunghi; M. Atzori; E. Lucaccini; L. Sorace; F. Totti; R. Sessoli, Dalton Transactions, 2016

Vanadium(iv) complexes have recently shown record quantum spin coherence times that in several circumstances are limited by spin–lattice relaxation. The role of the environment and vibronic properties in the low temperature dynamics is here investigated by a comparative study of the magnetization ...

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Facile preparation of N-doped TiO2 at ambient temperature and pressure under UV light with 4-nitrophenol as the nitrogen source and its photocatalytic activities

20.08.2016 | Satoshi Horikoshi; Yutaro Shirasaka; Hiroshi Uchida; Natsuko Horikoshi; Nick Serpone, Photochemical & Photobiological Sciences, 2016

To date syntheses of nitrogen-doped TiO2 photocatalysts (TiO2−xNx) have been carried out under high temperatures and high pressures with either NH3 or urea as the nitrogen sources. This article reports for the first time the facile preparation of N-doped TiO2 (P25 titania) in aqueous media at ...

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