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Flexible Superwettable Tapes for On-Site Detection of Heavy Metals

He, Xuecheng and Xu, Tailin and Gao, Wei and Xu, Li-Ping and Pan, Tingrui and Zhang, Xueji (2018) Flexible Superwettable Tapes for On-Site Detection of Heavy Metals. Analytical Chemistry, 90 (24). pp. 14105-14110. ISSN 0003-2700. http://resolver.caltech.edu/CaltechAUTHORS:20181109-100743439

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Abstract

Bioinspired superwettable micropatterns that combine superhydrophobicity and superhydrophilicity have been proved to exhibit outstanding capacity in controlling and patterning microdroplets and possessed new functionalities and possibilities in emerging sensing applications. Here, we introduce a flexible tape-based superhydrophilic–superhydrophobic tape toward on-site heavy metals monitoring. On such a superwettable tape, capillarity-assisted superhydrophilic microwells allow directly anchoring indicators in fixed locations and sampling into a test zone via simple dip-pull from an origin specimen solution. In contrast, the superhydrophobic substrate could confine the microdroplets in the superhydrophilic microwells for reducing the amount of analytical solution. The tape-based microchip also displays excellent flexibility against stretching, bending, and torquing for expanding wearable and portable sensing devices. Qualitative and quantitative colorimetric assessments of multiplex heavy metal analyses (chromium, copper, and nickel) by the naked eye are also achieved. The superwettable tape-based platforms with a facile operation mode and accessible signal read-out represent unrevealed potential for on-site environmental monitoring.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/acs.analchem.8b04536DOIArticle
https://pubs.acs.org/doi/suppl/10.1021/acs.analchem.8b04536PublisherSupporting Information
ORCID:
AuthorORCID
Xu, Tailin0000-0003-4037-2856
Gao, Wei0000-0002-8503-4562
Xu, Li-Ping0000-0002-2683-7963
Zhang, Xueji0000-0002-0035-3821
Additional Information:© 2018 American Chemical Society. Received: October 3, 2018; Accepted: November 9, 2018; Published: November 9, 2018. We acknowledge funding from National Natural Science Foundation of China (Grant 21804007), Beijing Natural Science Foundation (Grant 2184109), Fundamental Research Funds for Central Universities (Grant FRF-TP-17-066A1), National Postdoctoral Innovative Talents Support Program of China (Grant BX20180036), and Program for Guangdong Introducing Innovative and Entrepreneurial Teams (Grant 2016ZT06D631), and the Shenzhen Fundamental Research Program (Grant JCYJ20170413164102261). The authors declare no competing financial interest.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China21804007
Beijing Natural Science Foundation2184109
Fundamental Research Funds for Central UniversitiesFRF-TP-17-066A1
National Postdoctoral Innovative Talents Support Program of ChinaBX20180036
Program for Guangdong Introducing Innovative and Entrepreneurial Teams2016ZT06D631
Shenzhen Fundamental Research ProgramJCYJ20170413164102261
Record Number:CaltechAUTHORS:20181109-100743439
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20181109-100743439
Official Citation:Flexible Superwettable Tapes for On-Site Detection of Heavy Metals. Xuecheng He, Tailin Xu, Wei Gao, Li-Ping Xu, Tingrui Pan, and Xueji Zhang. Analytical Chemistry 2018 90 (24), 14105-14110 DOI: 10.1021/acs.analchem.8b04536
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90793
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:11 Nov 2018 13:02
Last Modified:20 Dec 2018 16:55

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