Highly Facile Strategy for Detecting D₂O in H₂O by Porphyrin-Based Luminescent Probes

Abstract

Owing to their almost similarities in size, shape, and chemical reactivity, effectively distinguishing deuteroxide (D 2 O) in water (H 2 O) remains an ongoing challenge, and the examples of a D 2 O probe are still quite scarce.Herein, since H 2 O can decrease the lifetime of a singlet oxygen as a vital intermediate and an H/D exchange in the luminescence process of porphyrins, we systematically investigated the enhanced ultraviolet−visible (UV−vis), photoluminescence (PL), and electrochemiluminescence (ECL) of watersoluble tetrakis(carboxphenyl)porphyrin (TCPP) in D 2 O. The findings showed that these luminescent properties had been greatly enhanced with the increase of the D 2 O fraction in water. Consequently, we first developed the highly facile methods of detecting D 2 O in H 2 O by the UV−vis, PL, and ECL of TCPP, respectively. Impressively, the ECL analysis exhibited a great superiority with a lower detection limit of 0.29 nM. The work not only achieves the challenging task of distinguishing between H 2 O and D 2 O but also provides a unique strategy to enhance the luminescent performance of porphyrin.

Role of Noncovalent Interactions in N,P-Functionalized Luminescent Carbon Dots for Ultrasensitive Detection of Moisture in D2O: Boosting Visible-NIR Light Sensitivity

“…Considering this, recently optical sensors have become the easiest and most efficient technique to track the presence of humidity or moisture in the field of food processing, biomedical applications, chemical production, and storage industry . In the same line, the probability of water contamination is very high in the case of D 2 O as it has a high tendency to absorb moisture due to its hygroscopic nature. , For detection of the H 2 O concentration in D 2 O, the following methods have been explored previously: NMR, atomic absorption spectroscopy, and infrared laser spectroscopy . Unfortunately, these approaches have several drawbacks, including the need for specialized instruments, intricate procedures, and lengthy processes, which make them unsuitable for real-time analysis.…”

Rigid Enhanced Electrochemiluminescence of 1,2,3-Triaryl Indenes as an Ultrasensitive Sensor for D2O in H2O

“…It was found that the D 2 O content was 19.57 nm. Compared with the laser-based method widely used in actual sample detection, it showed more accurate quantification. , Such an eminent result demonstrated that the indene-based ECL method could serve as a reliable ECL sensor for D 2 O detection in practical application. − Meanwhile, we have also studied the detection mechanism. As depicted in Figures S11 and S12, Supporting Information, the 1 H NMR and MS spectra of indene were measured after D 2 O detection, and the results clearly showed the hydrogen/deuterium exchange at the 1-position of indene.…”

Zn2+-Induced Gold Cluster Aggregation Enhanced Electrochemiluminescence for Ultrasensitive Detection of MicroRNA-21

“…•− returned to SO 4 2− (3). Last, Zn 2+ -GCA* radiated energy in the form of light as it went back to the ground state (4).…”