An optical sensor array on a flexible substrate with integrated organic opto-electric devices

Mayr, Torsten; Abel, Tobias; Kraker, Elke; Köstler, Stefan; Haase, A.; Konrad, Christian; Tscherner, Martin; Lamprecht, Bernhard

doi:10.1016/j.proeng.2010.09.279

Cited by 16 publications

(12 citation statements)

References 4 publications

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“…For the purpose of indicator layer preparation, an appropriate transparent solid-state platform (substrate) was chosen for the deposition of the EVA and azobenzene dye (CR-528 or CR-555) mixture. A substrate is often a flat surface on which sensing material is processed to create a sensor or a probe [34]. For the fabrication of probes intended for long-term use, the substrates need to be resilient and have a long lifetime.…”

Section: Resultsmentioning

confidence: 99%

Indicator Layers Based on Ethylene-Vinyl Acetate Copolymer (EVA) and Dicyanovinyl Azobenzene Dyes for Fast and Selective Evaluation of Vaporous Biogenic Amines

Mastnak

Lobnik

Mohr

et al. 2018

Sensors

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The article presents naked-eye methods for fast, sensitive, and selective detection of isopentylamine and cadaverine vapours based on 4-N,N-dioctylamino-4′-dicyanovinylazobenzene (CR-528) and 4-N,N-dioctylamino-2′-nitro-4′-dicyanovinylazobenzene (CR-555) dyes immobilized in ethylene-vinyl acetate copolymer (EVA). The reaction of CR-528/EVA and CR-555/EVA indicator layers with isopentylamine vapours caused a vivid colour change from pink/purple to yellow/orange-yellow. Additionally, CR-555/EVA showed colour changes upon exposure to cadaverine. The colour changes were analysed by ultraviolet–visible (UV/VIS) molecular absorption spectroscopy for amine quantification, and the method was partially validated for the detection limit, sensitivity, and linear concentration range. The lowest detection limits were reached with CR-555/EVA indicator layers (0.41 ppm for isopentylamine and 1.80 ppm for cadaverine). The indicator layers based on EVA and dicyanovinyl azobenzene dyes complement the existing library of colorimetric probes for the detection of biogenic amines and show great potential for food quality control.

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Section: Resultsmentioning

confidence: 99%

Indicator Layers Based on Ethylene-Vinyl Acetate Copolymer (EVA) and Dicyanovinyl Azobenzene Dyes for Fast and Selective Evaluation of Vaporous Biogenic Amines

Mastnak

Lobnik

Mohr

et al. 2018

Sensors

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“…Optical wave-guiding can also be employed to increase the SNR and eliminate the need for optical filters [69][70][71][72][73]. Mayr and co-workers [69,70] developed such a sensor array with integrated OPDs, where optical filters were not required due to the platform's geometry (Figure 3), which enabled separation of the excitation light from the PL signal.…”

Section: Pl-based Chemical/biological Sensorsmentioning

confidence: 99%

“…Mayr and co-workers [69,70] developed such a sensor array with integrated OPDs, where optical filters were not required due to the platform's geometry (Figure 3), which enabled separation of the excitation light from the PL signal. As shown in the figure, ring-shaped OPDs were fabricated on the back side of a glass slide or on a polymeric substrate and the sensing film was prepared either on the opposite side of the substrate (for PL-based sensing) or immobilized inside the waveguide layer (Figure 3b) (for absorption-based sensing).…”

Section: Pl-based Chemical/biological Sensorsmentioning

confidence: 99%

Organic Photodetectors in Analytical Applications

et al. 2015

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This review focuses on the utilization of organic photodetectors (OPDs) in optical analytical applications, highlighting examples of chemical and biological sensors and lab-on-a-chip spectrometers. The integration of OPDs with other organic optical sensor components, such as organic light emitting diode (OLED) excitation sources and thin organic sensing films, presents a step toward achieving compact, eventually disposable all-organic analytical devices. We discuss recent advances in developing and integrating OPDs for various applications as well as challenges faced in this area.

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“…Since organic electronics can be readily deposited on flexible substrates (including polarizer foils), this approach highlights a feasible, and potentially cost/time-saving improvement to the LoC fabrication process. Mayr et al of the same research group instead used blue emitting OLEDs in combination with a CuPc-PTCBI OPD to detect O 2 and CO 2 gas concentrations [110]. Here the authors employ the ring-OPD geometry described earlier (shown in Figure 8), to detect 0 to 20% O 2 , 0 to 10% CO 2 and 3 to 9 pH with a fast and reversible sensor response.…”

Section: Fully Integrated Oled/opd Lab-on-a-chip Systemsmentioning

confidence: 99%

Integration of Organic Light Emitting Diodes and Organic Photodetectors for Lab-on-a-Chip Bio-Detection Systems

2014

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The rapid development of microfluidics and lab-on-a-chip (LoC) technologies have allowed for the efficient separation and manipulation of various biomaterials, including many diagnostically relevant species. Organic electronics have similarly enjoyed a great deal of research, resulting in tiny, highly efficient, wavelength-selective organic light-emitting diodes (OLEDs) and organic photodetectors (OPDs). We consider the blend of these technologies for rapid detection and diagnosis of biological species. In the ideal system, optically active or fluorescently labelled biological species can be probed via light emission from OLEDs, and their subsequent light emission can be detected with OPDs. The relatively low cost and simple fabrication of the organic electronic devices suggests the possibility of disposable test arrays. Further, with full integration, the finalized system can be miniaturized and made simple to use. In this review, we consider the design constraints of OLEDs and OPDs required to achieve fully organic electronic optical bio-detection systems. Current approaches to integrated LoC optical sensing are first discussed. Fully realized OLED-and OPD-specific photoluminescence detection systems from literature are then examined, with a specific focus on their ultimate limits of detection. The review highlights the enormous potential in OLEDs and OPDs for integrated optical sensing, and notes the key avenues of research for cheap and powerful LoC bio-detection systems.

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An optical sensor array on a flexible substrate with integrated organic opto-electric devices

Cited by 16 publications

References 4 publications

Indicator Layers Based on Ethylene-Vinyl Acetate Copolymer (EVA) and Dicyanovinyl Azobenzene Dyes for Fast and Selective Evaluation of Vaporous Biogenic Amines

Indicator Layers Based on Ethylene-Vinyl Acetate Copolymer (EVA) and Dicyanovinyl Azobenzene Dyes for Fast and Selective Evaluation of Vaporous Biogenic Amines

Organic Photodetectors in Analytical Applications

Integration of Organic Light Emitting Diodes and Organic Photodetectors for Lab-on-a-Chip Bio-Detection Systems

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