2016
DOI: 10.1021/jacs.6b07331
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Bisboronic Acids for Selective, Physiologically Relevant Direct Glucose Sensing with Surface-Enhanced Raman Spectroscopy

Abstract: This paper demonstrates the direct sensing of glucose at physiologically relevant concentrations with surface-enhanced Raman spectroscopy (SERS) on gold film-over-nanosphere (AuFON) substrates functionalized with bisboronic acid receptors. The combination of selectivity in the bisboronic acid receptor and spectral resolution in the SERS data allow the sensors to resolve glucose in high backgrounds of fructose and, in combination with multivariate statistical analysis, detect glucose accurately in the 1-10 mM r… Show more

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Cited by 107 publications
(73 citation statements)
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“…[13] Thei ncreased nucleation sites can be achieved owing to the uniform electric field and charge distribution through the surface modification of PA M. Therefore,z inc tends to grow uniformly and eventually forms as mooth plating surface.F rom the Raman spectra (Figure 1b), the characteristic peaks of pristine PA Misobserved at 839 cm À1 (CÀCs ide-chain vibration), 1106 cm À1 (CÀC skeletal stretching), 1319 cm À1 (C À Hbending), 1441 cm À1 (C À Ns tretching), 1610 cm À1 (N À Hb ending), 1665 cm À1 (C = O stretching), and 2925 cm À1 (C À Hs tretching), respectively, indicating that PA Mi salong-chain polymer with abundant acyl groups. [15] Thee lectrolytes with different concentrations of PA M were investigated to optimize the amount of PA M. [16] In the comparison of the electrochemical windows (Figure 1f), the zinc plating potential is decreased from À0.103 to À0.041 Vw ith the added amount of PA Mincreasing,which can be attributed to the activation of PA Mi nt he zinc plating process.T he oxygen evolution potential increases about 0.1 Vafter the addition of PA M. This widened electrochemical window is beneficial to expanding the available voltage range of the batteries.T he chemical stability of zinc was examined by immersing zinc foil in the electrolytes for 7days.The surface morphologies of the soaked zinc foils in the electrolytes with different PA Mc oncentrations are shown in Figure 1g-j. Thei ntensity changes of these peaks are clearly shown in the Supporting Information, Table S1, from which we can conclude that PA M is lied on the metal substrate by the absorption of acyl groups at side chains.O wing to the surface-enhanced Raman scattering,t he group absorbed on the metal surface generally exhibits the relatively strong intensity of Raman signal.…”
Section: Introductionmentioning
confidence: 99%
“…[13] Thei ncreased nucleation sites can be achieved owing to the uniform electric field and charge distribution through the surface modification of PA M. Therefore,z inc tends to grow uniformly and eventually forms as mooth plating surface.F rom the Raman spectra (Figure 1b), the characteristic peaks of pristine PA Misobserved at 839 cm À1 (CÀCs ide-chain vibration), 1106 cm À1 (CÀC skeletal stretching), 1319 cm À1 (C À Hbending), 1441 cm À1 (C À Ns tretching), 1610 cm À1 (N À Hb ending), 1665 cm À1 (C = O stretching), and 2925 cm À1 (C À Hs tretching), respectively, indicating that PA Mi salong-chain polymer with abundant acyl groups. [15] Thee lectrolytes with different concentrations of PA M were investigated to optimize the amount of PA M. [16] In the comparison of the electrochemical windows (Figure 1f), the zinc plating potential is decreased from À0.103 to À0.041 Vw ith the added amount of PA Mincreasing,which can be attributed to the activation of PA Mi nt he zinc plating process.T he oxygen evolution potential increases about 0.1 Vafter the addition of PA M. This widened electrochemical window is beneficial to expanding the available voltage range of the batteries.T he chemical stability of zinc was examined by immersing zinc foil in the electrolytes for 7days.The surface morphologies of the soaked zinc foils in the electrolytes with different PA Mc oncentrations are shown in Figure 1g-j. Thei ntensity changes of these peaks are clearly shown in the Supporting Information, Table S1, from which we can conclude that PA M is lied on the metal substrate by the absorption of acyl groups at side chains.O wing to the surface-enhanced Raman scattering,t he group absorbed on the metal surface generally exhibits the relatively strong intensity of Raman signal.…”
Section: Introductionmentioning
confidence: 99%
“…SESORS-based measurements can now monitor glucose in vivo for more than than 17 days. More recently, the DT/MH system has been replaced with one based on a thiol-containing bis(boronic acid) receptor, which rapidly and preferentially binds glucose over other sugars 50 . The resulting Raman data could be interpreted using multivariate statistical analysis to distinguish normal, hypoglycemic and hyperglycemic responses.…”
Section: [H1] Key Advances In In Vivo Sensingmentioning
confidence: 99%
“…For example, the use of non-targeting and targeting probes allows specific and non-specific binding to be discerned during cancer detection, 49 and more sophisticated nanoprobes have improved glucose selectivity. 50 We are hopeful that the full benefits of SERS will be realised in the coming years, as the technique continues to be pushed further towards in vivo clinical use. Despite only 11 years having passed since the first in vivo study, many promising studies have already surfaced, including some in glucose sensing 29,48,51 and cancer diagnosis.…”
mentioning
confidence: 99%
“…[67] This strategy shares several analogies with the triosmium carbonyl cluster approach. In order to overcome this limitation, Van Duyne's group, who previously used self-assembled monolayers for SERS detection of glucose, reported a new sensing strategy using bisboronic acid receptors (two units of 4-amino-3-fluorophenylboronic acid).…”
Section: Detection Of Saccharidesmentioning
confidence: 99%