Construction of dual-channel ratio sensing platform and molecular logic gate for visual detection of oxytetracycline based on biomass carbon dots prepared from cherry tomatoes stalk

Bismuth, Nitrogen-Codoped Carbon Dots as a Dual-Read Optical Sensing Platform for Highly Sensitive, Ultrarapid, Ratiometric Detection of Doxorubicin

“…The presence of Bi doping in Bi,N-CDs was verified by the observation of Bi 4f 7/2 and Bi 4f 5/2 peaks at 153.2 and 168.6 eV, respectively (Figure B) . The high-resolution spectrum of C 1s revealed three distinct binding energies at 284.5, 285.9, and 288.4 eV, which were assigned to C–C/CC, C–O/C–N, and CO bonds, respectively (Figure C) . The N 1s spectra of Bi,N-CDs could be decomposed into three peaks at 399.6, 401.2, and 406.1 eV (Figure D), corresponding to pyrrolic-N, N–H, and –NO 3 – bonds, respectively .…”

“…35 The high-resolution spectrum of C 1s revealed three distinct binding energies at 284.5, 285.9, and 288.4 eV, which were assigned to C−C/C�C, C−O/C− N, and C�O bonds, respectively (Figure 2C). 36 The N 1s spectra of Bi,N-CDs could be decomposed into three peaks at 399.6, 401.2, and 406.1 eV (Figure 2D), corresponding to pyrrolic-N, N−H, and −NO 3 − bonds, respectively. 37 The O 1s spectrum indicated the presence of C−O and N−O bonds at 531.7 and 533.0 eV, respectively (Figure S1).…”

Aluminum-doped carbon dots for the simultaneous selective detection of five tetracycline antibiotics

“…The optical analytical technique as an alternative possesses the merits of excellent selectivity, ultra-fast responses, simplicity and low-cost [12]. Most reported optical analysis method can only recognize one tetracycline [11][12][13], and are di cult to realize the simultaneous selective detection of ve tetracyclines [14]. Up to now, it is still challenge to develop method for simultaneous selective detection of ve tetracycline antibiotics.…”

Fluorescence switch based on NIR-emitting carbon dots revealing high selectivity in the rapid response and bioimaging of oxytetracycline

“…26 Moreover, other literature reports indicate that the synthesis of these probes is challenging and not biocompatible for in vitro applications. 27,28 Unfortunately, these kinds of probes faced limitations in their practical applications due to scattered light interference and auto-fluorescence of the mostly blue/green emissive CDs under UV light. They exhibited a low signal-to-noise (S/N) ratio, poor sensitivity, single mode detection (photoluminescence intensity quenching), non-linear performance, and difficulties in the manipulation of biomaterials.…”