@article{ ISI:000407988600037,
Author = {Gotor, Raul and Ashokkumar, Pichandi and Hech, Mandy and Keil, Karin and
   Rurack, Knut},
Title = {{Optical pH Sensor Covering the Range from pH 0-14 Compatible with
   Mobile-Device Readout and Based on a Set of Rationally Designed
   Indicator Dyes}},
Journal = {{ANALYTICAL CHEMISTRY}},
Year = {{2017}},
Volume = {{89}},
Number = {{16}},
Pages = {{8437-8444}},
Month = {{AUG 15}},
Abstract = {{In this work, a family of pH-responsive fluorescent probes has been
   designed in a rational manner with the aid of quantum chemistry tools,
   covering the entire pH range from 0-14. Relying on the
   boron-dipyrromethene (BODIPY) core, all the probes as well as selected
   reference dyes display very similar spectroscopic properties with ON OFF
   fluorescence switching responses, facilitating optical readout in simple
   devices used for detection and analysis. Embedding of the probes and
   reference dyes into hydrogel spots on a plastic strip yielded a test
   strip that reversibly indicates pH with a considerably small uncertainty
   of similar to 0.1 pH units. These strips are not only reusable but,
   combined with a 3D-printed case that can be attached to a smartphone,
   the USB port of which drives the integrated LED used for excitation,
   allows for autonomous operation in on-site or in-the-field applications;
   the developed Android application software ({''}app{''}) further
   simplifies operation for unskilled users.}},
DOI = {{10.1021/acs.analchem.7b01903}},
ISSN = {{0003-2700}},
EISSN = {{1520-6882}},
ResearcherID-Numbers = {{Ashokkumar, Pichandi/F-9802-2010}},
ORCID-Numbers = {{Ashokkumar, Pichandi/0000-0002-2505-9039}},
Unique-ID = {{ISI:000407988600037}},
}

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