10 research outputs found
A New Smart Surface-Enhanced Raman Scattering Sensor Based on pH-Responsive Polyacryloyl Hydrazine Capped Ag Nanoparticles
No full textAbstract A novel pH-responsive Ag@polyacryloyl hydrazide (Ag@PAH) nanoparticle for the first time as a surface-enhanced Raman scattering (SERS) substrate was prepared without reducing agent and end-capping reagent. Ag@PAH nanoparticles exhibited an excellent tunable detecting performance in the range from pH = 4 to pH = 9. This is explained that the swelling-shrinking behavior of responsive PAH can control the distance between Ag NPs and the target molecules under external pH stimuli, resulting in the tunable LSPR and further controlled SERS. Furthermore, Ag@PAH nanoparticles possessed an ultra-sensitive detecting ability and the detection limit of Rhodamine 6G reduced to 10−12 M. These advantages qualified Ag@PAH NP as a promising smart SERS substrate in the field of trace analysis and sensors
Effect of side-chain structure on the third-order nonlinear optical properties of acrylate polymers
No full textA serials of acrylate monomers containing long conjugated azobenzene groups were prepared and polymerized in N,N-dimethylformamide (DMA) using 2, 2'-azobis (isobutyronitrile) (AIBN) as initiator at 70 degrees C. The monomers and polymers were characterized by FTIR, H-1-NMR and UV. The molecular weights of polyacrylates were determined by gel permeation chromatography (GPC). The third-order nonlinear optical properties of these polymers were determined by the Z-scan technique with 8 ns pulses at 532 nm, and the relationship between nonlinear optical properties and the molecular structures of substituted chromophores was investigated. The results revealed that all these polymers possessed well nonlinear absorption,and enlarging pi-electron conjugated length and strengthening D-pi-A push-pull capacity of side-chain chromophores of polymers will effectively enhance the third-order nonlinear optical properties of polymers
Additional file 1: of A New Smart Surface-Enhanced Raman Scattering Sensor Based on pH-Responsive Polyacryloyl Hydrazine Capped Ag Nanoparticles
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A New Smart Surface-Enhanced Raman Scattering Sensor Based on pH-Responsive Polyacryloyl Hydrazine Capped Ag Nanoparticles
No full textHigh selectivity improvement of chemosensors through hydrogen-induced emission (HIE) for detection of Hg2+ in vivo and in vitro
No full textPolyaniline wrapped manganese dioxide nanorods: Facile synthesis and as an electrode material for supercapacitors with remarkable electrochemical properties
No full textNear-Infrared Absorbing Squaraine Dyes for Solar Cells: Relationship between Architecture and Performance
No full textMechanism of dielectric constant variation of POSS-based organic-inorganic molecular hybrids
No full text10.1021/jp1080753Journal of Physical Chemistry C1145122455-2246
