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[2015][Macromolecules, 2015, 48 (12), 3941–3948]Optimization of Broad-Response and High-Detectivity Polymer Photodetectors by Bandgap Engineering of Weak Donor–Strong Acceptor Polymers
A series of weak donor–strong acceptor polymers containing two different electron-deficient units (diketopyrrolopyrrole and thienoisoindigo) are synthesized and used in broad-response and high-detectivity polymer photodetectors. By adjusting the composition ratio of the two acceptors, the absorption spectra, energy levels, molecular stacking, and film morphology are affected, which in turn infl...
http://www.polymer.cnt//ss/qiaowenqiang/publicationsshow_8437.html |
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The stability of covalently immobilization of TEMPO on the polymer surface through ionic liquid linkage: a comparative and model research.
Covalently immobilizing the active sites or ligands on a polymer surface is an efficient strategy to achieve a full use of expensive organic parts. In this work, 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) was anchored onto polystyrene beads through an ether bond or an ionic liquid bridge. We quantitatively compared their thermal stabilities at nitrogen atmosphere and their chemical stabilities i...
http://www.polymer.cnt//ss/wangjianli/publicationsshow_8403.html |
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An insight into the intensification of aqueous/organic phase reaction by the addition of magnetic polymer nanoparticles
The intensification mechanism of aqueous/organic
phase reaction by the addition of magnetic
polymer nanoparticles was investigated. To understand
how nanoparticles intensify the liquid-liquid (L-L)
reaction, three reaction enhancement
strategies of mechanical agitation (MA), the addition of magnetic
polymer nanoparticles (MPN) or phase transfer catalyst (PTC) were
compared in Montanari oxidation...
http://www.polymer.cnt//ss/wangjianli/publicationsshow_8402.html |
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Improving Performance of Polymer Photovoltaic Devices Using Annealing-free Approach via Constructing Ordered Aggregations in Solution
Low crystalline order has been proved to be one of the main hindrances for achieving high performance devices based on thin films composed of crystallizable polymer. In this work, we use a facile method to substantially improve crystallinity of poly(3-hexylthiophene) (P3HT) in its pure or composite film via the construction of ordered precursors in the solution used for thin film de...
http://www.polymer.cnt//ss/liguili/publicationsshow_8392.html |
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Epitaxy Assisted Creation of PCBM Nanocrystals and Its Application in Constructing Optimized Morphology for Bulk-Heterojunction Polymer Solar Cells
PCBM (a C60 derivative) is so far the most successful electron acceptor for bulk-heterojunction polymer photovoltaic (PV) cells. Here we present a novel method epitaxy-assisted creation of PCBM nanocrystals and their homogeneous distribution in the matrix using freshly cleaved mica sheet as the substrate. The highly matched epitaxy relationship between the unit cell of PCBM crystal ...
http://www.polymer.cnt//ss/liguili/publicationsshow_8391.html |
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Dicyanovinyl-functionalized fluorescent hyperbranched conjugated polymer nanoparticles for sensitive naked-eye cyanide ion detection
A selective and sensitive fluorescent nanoprobe based on hyperbranched conjugated polymer nanoparticles (HBCPN-DCV) for cyanide detection was developed. HBCPN-DCV was readily prepared by Suzuki coupling polymerization in a mini-emulsion, followed by post-functionalization of numerous terminal aldehyde groups into cyanide-responsive dicyanovinyl fluorophores on the particle surface. An&nb...
http://www.polymer.cnt//ss/tong_hui/publicationsshow_8369.html |
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Intramolecular charge-transfer emission from conjugated polymer nanoparticles: the terminal group effect on electronic and optical properties
Tuning fluorescence properties and frontier orbital energy levels of hyperbranched conjugated polymer nanoparticles (HCPN-NMe) by the facile introduction of terminal N,N-dimethylaniline groups via an intramolecular charge transfer (ICT) process between the nanoparticle core and the terminal groups was demonstrated for the first time. Compared with the similar hyperbranched conjugated pol...
http://www.polymer.cnt//ss/tong_hui/publicationsshow_8368.html |
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Nano Letters 2003: Simple Method to Isolate Single Polymer Chains for the Direct Measurement of the Desorption Force
We propose a simple method to isolate polymer chains individually at the quartz surface by utilizing the defects in the self-assembled monolayers of organosilane. This method allows us to measure the desorption force of a single polyelectrolyte chain from a substrate directly.
http://www.polymer.cnt//ss/cuishuxun/publicationsshow_8344.html |
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Polymer Chemistry 2015: Real Time Quantification of the Chemical Cross-Link Density of a Hydrogel by in situ UV-vis Spectroscopy
In this paper, we prepare a hydrogel in a green way via the redox reaction between phenol groups and EosinY by visible light irradiation. Eosin Y shows significant absorption at 515 nm while the reduced product does not. A series of control experiments show that almost 100% of the consumed Eosin Y is reacted with phenol groups to form cross-link points. On the basis of the two results, the chemica...
http://www.polymer.cnt//ss/cuishuxun/publicationsshow_8343.html |
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Temperature dependence of creep and recovery behaviours of polymer composites filled with chemically reduced graphene oxide
Resistance to time-dependent plastic deformation of polymer composite materials is a crucial require-
ment in their application for long-term durability and reliability. Herein, creep and recovery behaviors
of polystyrene (PS) composites filled with various loadings of chemically reduced graphene oxide (CRGO)
were investigated at different environment temperatures. As expected, incor...
http://www.polymer.cnt//ss/tanglongcheng/publicationsshow_8303.html |
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