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Start Over Author "Li, Alexander" Journal chemical communications
5 results on '"Li, Alexander"'

2. Reversible photoswitching specifically responds to mercury(II) ions: the gated photochromism of bis(dithiazole)ethene.

Author

Weihong Zhu, Yongshu Xie, He Tian, Yue Wu, Wei Wan, and Li, Alexander D. Q.

Subjects
PHOTODETECTORS, ION analysis, VOLTAGE-gated ion channels, PHOTOCHROMISM, CYCLOHEXADIENE, THIAZOLE derivatives
Abstract

Photoswitching of bis(dithiazole)ethene can be regulated by Hg(II) ions and EDTA in a "lock-and-unlock" manner. The molecular photoswitch provides an enzyme-like binding pocket that selectively binds specifically to mercury ions, thus modulating the degree of photoswitching in its presence. [ABSTRACT FROM AUTHOR]

Published
2014
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3. Super-resolution fluorescence nanoscopy applied to imaging core–shell photoswitching nanoparticles and their self-assembliesElectronic supplementary information (ESI) available: Materials, methods and supporting figures. See DOI: 10.1039/c0cc03217d

Author

Tian, Zhiyuan, Li, Alexander D. Q., and Hu, Dehong

Subjects
*SOLUTION (Chemistry), *FLUORESCENCE, *NANOPARTICLES, *MOLECULAR structure, *MOLECULAR self-assembly, *POLYMERS, *HYDROPHOBIC surfaces, *DYES & dyeing
Abstract

Using photo-actuated unimolecular logical switching attained reconstruction (PULSAR) nanoscopy, the structures of photoswitchable polymeric nanoparticles self-assembled on the surfaces of CaCl2crystals at the nanoscale were revealed; the photoswitching events and the locations of the photoswitchable fluorescent dyes inside the hydrophobic cores of the core–shell type polymeric nanoparticles were determined. [ABSTRACT FROM AUTHOR]

Published
2011
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4. Twisted perylene dyes enable highly fluorescent and photostable nanoparticles.

Author

Zhiyuan Tian, Shaller, Andrew D., and Li, Alexander D. Q.

Subjects
PERYLENE, DYES & dyeing, NANOPARTICLES, FLUORESCENCE, COVALENT bonds, CHEMICAL synthesis
Abstract

Polymeric fluorescent nanoparticles with covalently embedded perylene fluorophores were developed by facile synthesis strategy and their advanced features of extremely high fluorescence intensity, non-photoblinking and excellent photostability were experimentally confirmed at the single nanoparticle level. [ABSTRACT FROM AUTHOR]

Published
2009
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5. Multi-temporal self-organizations in 1,3-O,O'-bis(dodecyl)calix[4]arene

Author

Li, Alexander D. Q., Marquez, Manuel, and Guo, Mingming

Abstract

After heat erases the order in 1,3-O,O'-bis(dodecyl)calix[4]arene, it self-organizes the phenyl units into a rigid calix bowl first at T2 = 111 °C, followed by the formation of all-trans alkyl chains at T1 = 62 °C, which eventually yields a stable cone-shaped structure at room temperature.

Published
2002

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