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2010年07月29日

【期刊论文】A New Approach to Fluorescence "Turn-On" Sensing of r-Amino Acids

李振， Zhong'an Li， Xiaoding Lou， Zhen Li， * and Jingui Qin

VOL. 1 • NO. 2 • 232-234 • 2009，-0001，（）：

-1年11月30日

For the first time, a conjugated fluorescent polymer was utilized to probe R-amino acids, sensitively and selectively, through a new approach. First the strong fluorescence of the prepared polyfluorene (P1) was quenched by trace copper ions, and then the quenched fluorescence was recovered upon the addition of R-amino acids, making P1 a new and sensitive biosensor toward R-amino acids. The experimental results demonstrated that the R-amino acid selective nature of P1 over other analytes was relatively good. Thus, the work reported here might open up a new avenue for developing new biosensors.

polyfluorene • biosensor • R-amino acids • indirect strategy

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2010年07月29日

【期刊论文】Synthesis and Characterization of Indole-Containing Chromophores for Second-Order Nonlinear Optics

李振， Wei Gong， † Qianqian Li， † Zhen Li， *， † Changgui Lu， ‡ Jing Zhu， ‡ Sueyue Li， † Junwei Yang， † Yiping Cui， ‡ and Jingui Qin*， †

J. Phys. Chem. B 2006, 110, 10241-10247，-0001，（）：

-1年11月30日

摘要

XPush-pull indole-containing nonlinear optical chromophores with different acceptor and ð-conjugated moieties have been synthesized and characterized. Experimental measurements of the second-order nonlinear optical response demonstrated that the chromophores exhibit similar or superior optical nonlinearity compared with their analogues with an aniline moiety as the donor group, but the indole-based chromophores display blueshifted absorption, even up to 30 nm.

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2010年07月29日

【期刊论文】From Controllable Attached Isolation Moieties to Possibly Highly Efficient Nonlinear Optical Main-Chain Polyurethanes Containing Indole-Based Chromophores

李振， Qianqian Li， † Zhen Li， *， † Fanxin Zeng， † Wei Gong， † Zhong'an Li， † Zhichao Zhu， † Qi Zeng， † Shanshan Yu， † Cheng Ye， ‡ and Jingui Qin*， †

J. Phys. Chem. B 2007, 111, 508-514，-0001，（）：

-1年11月30日

摘要

For the first time, the indole-based NLO chromophores were embedded into the polymer main chain, and different isolation groups were attached to their donor side with the efforts of adjusting the NLO properties of the resultant main-chain polyurethanes, according to the site isolation principle. Thanks to the main-chain structure and the advantages of the indole-based chromophores, all the polymers show excellent transparency, good processability, thermal stability, and relatively good NLO effects. The tested NLO properties of the polymers demonstrate that there is a suitable isolation group present for the sulfonyl-based chromophore to boost its microscopic â value to a possibly higher macroscopic NLO property efficiently.

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2010年07月29日

【期刊论文】Nonlinear Optical Dendrimers from Click Chemistry: Convenient Synthesis, New Function of the Formed Triazole Rings, and Enhanced NLO Effects

李振， Zhong'an Li， † Gui Yu， ‡ Wenbo Wu， † Yunqi Liu， ‡ Cheng Ye， ‡ Jingui Qin， † and Zhen Li*， †

Macromolecules 2009, 42, 3864-3868，-0001，（）：

-1年11月30日

摘要

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2010年07月29日

【期刊论文】An Attempt To Modify Nonlinear Optical Effects of Polyurethanes by Adjusting the Structure of theChromophore Moieties at the Molecular Level Using “Click” Chemistry

李振， Zhong’an Li， † Qi Zeng， † Zhen Li， *， † Shoucheng Dong， † Zhichao Zhu， † Qianqian Li， † Cheng Ye， ‡ Chong’an Di， ‡ Yunqi Liu， ‡ and Jingui Qin*， †

Macromolecules 2006, 39, 8544-8546，-0001，（）：

-1年11月30日

摘要

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