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Helin Liu  - - - 
Top co-authors See all
Artur M. S. Silva

1403 shared publications

QOPNA, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal

Hao Shi

131 shared publications

Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America

Qun Huo

34 shared publications

Department of Chemistry and NanoScience Technology Center, University of Central Florida, 12424 Research Parkway Suite 400, Orlando, Florida 32826, United States

Yinlin Sha

28 shared publications

Peking University

Xuefa Shi

22 shared publications

State Oceanic Administration

19
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Publication Record
Distribution of Articles published per year 
(2012 - 2017)
Publications See all
Article 2 Reads 0 Citations Examining the dynamics of the interaction between the development of creative industries and urban spatial structure by ... Helin Liu, Elisabete Silva Published: 25 January 2017
Urban Studies, doi: 10.1177/0042098016686493
DOI See at publisher website
Article 0 Reads 1 Citation Deglacial biogenic opal peaks revealing enhanced Southern Ocean upwelling during the last 513 ka Zheng Tang, Xuefa Shi, Xu Zhang, Zhihua Chen, Min-Te Chen, X... Published: 01 December 2016
Quaternary International, doi: 10.1016/j.quaint.2016.09.020
DOI See at publisher website
Article 3 Reads 1 Citation Incorporating GIS data into an agent-based model to support planning policy making for the development of creative indus... Helin Liu, Elisabete A. Silva, Qian Wang Published: 04 June 2016
Journal of Geographical Systems, doi: 10.1007/s10109-016-0229-7
DOI See at publisher website
Article 0 Reads 8 Citations Intracellular Temperature Sensing: An Ultra-bright Luminescent Nanothermometer with Non-sensitivity to pH and Ionic Stre... Helin Liu, Yanyan Fan, Jianhai Wang, Zhongsen Song, Hao Shi,... Published: 08 October 2015
Scientific Reports, doi: 10.1038/srep14879
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Luminescence thermometry usually suffer from cellular complexity of the biochemical environment (such as pH and ionic strength), and thus the accuracy and reliability of the determined intracellular temperature are directly affected. Herein, a photoluminescent nanothermometer composed of polymer encapsulated quantum dots (P-QD) has been developed. And the prepared nanothermometer exhibits some advantages: such as non-sensitivity to pH and ionic strength, as well as high detection sensitivity and ultrahigh reversibility. The intracellular temperature was accurately determined under physiological conditions with different pH and ionic strength, and direct measurement of thermogenesis in individual cells has been achieved.
Article 1 Read 0 Citations Erratum: Creative industries urban model: structure and functioning Helin Liu Published: 01 June 2015
Proceedings of the Institution of Civil Engineers - Urban Design and Planning, doi: 10.1680/udap.2015.168.3.157
DOI See at publisher website
Article 1 Read 7 Citations Extremely High Brightness from Polymer-Encapsulated Quantum Dots for Two-photon Cellular and Deep-tissue Imaging Yanyan Fan, Helin Liu, Rongcheng Han, Lu Huang, Hao Shi, Yin... Published: 24 April 2015
Scientific Reports, doi: 10.1038/srep09908
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Materials possessing high two photon absorption (TPA) are highly desirable for a range of fields, such as three-dimensional data storage, TP microscopy (TPM) and photodynamic therapy (PDT). Specifically, for TPM, high TP excitation (TPE) brightness (σ × ϕ, where σ is TPA cross-sections and ϕ is fluorescence quantum yield), excellent photostability and minimal cytotoxicity are highly desirable. However, when TPA materials are transferred to aqueous media through molecule engineering or nanoparticle formulation, they usually suffer from the severely decrease of quantum yield (QY). Here, we report a convenient and efficient method for preparing polymer-encapsulated quantum dots (P-QD). Interestingly, the QY was considerably enhanced from original 0.33 (QDs in THF) to 0.84 (P-QD in water). This dramatic enhancement in QY is mainly from the efficiently blocking nonradiative decay pathway from the surface trap states, according to the fluorescence decay lifetimes analysis. The P-QD exhibits extremely high brightness (σ × ϕ up to 6.2 × 10(6) GM), high photostability, excellent colloidal stability and minimal cytotoxicity. High quality cellular TP imaging with high signal-to-background ratio (> 100) and tissue imaging with a penetration depth of 2200 μm have been achieved with P-QD as probe.
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