Highly fluorescence Ta4C3 MXene quantum dots as fluorescent nanoprobe for heavy ion detection and stress monitoring of fluorescent hydrogels

Imitation-mussel fluorescent silicon quantum dots for selective labeling and imaging of bacteria and biofilms

“…However, this method involves complicated procedures and can only provide average information on the bacterial population. Meanwhile, many molecular detection methods such as surface-enhanced Raman scattering (SERS) (Zhao et al, 2022), polymerase chain reaction (PCR), and DNA sequencing technology (Shendure et al, 2017) have been developed, while the application of these technologies is limited due to the need of sophisticated equipment. To date, the most widely used method for bacterial labeling and imaging is fluorescence probe-based approaches such as flow cytometry and fluorescence microscopy.…”

“…Recently, semiconductor quantum dots, carbon nanodots, and fluorescent silicon quantum dots (SiQDs) have emerged as a new generation of fluorescence materials for their excellent stability and biocompatibility (Gao et al, 2018;Kasouni et al, 2019;Sivasankarapillai et al, 2019;Huang et al, 2020;Gao et al, 2021;Li et al, 2022;Martynenko et al, 2022;O€zbilgin et al, 2022;Zhao et al, 2022). Among these, zero-dimensional SiQDs with high fluorescence quantum yield and narrow emission bands have received increasing attention for the sensing of biological and bacteriologic species.…”

Upconversion fluorescence of MXene nanosheets and the sensitive detection of l-tryptophan

“…10 Furthermore, reducing their size to nanosheets or nanodots can endow them with extremely useful optical properties and functions because of the quantum confinement effect, which makes MXenes promising candidates for imaging, 11,12 sensors, 13,14 and photoelectric conversion. 15 For instance, based on down-conversion fluorescence, it can be used as an intracellular pH sensor 16 or for the highly sensitive analysis of hypochlorite, 17 as well as the label-free detection and imaging of metal ions. 18 The heterostructure composed of MXene quantum dots and Cu 2 O nanowires was developed for boosting the photocatalytic reduction of CO 2 into methanol.…”

Novel Naphthalimide‐Based Self‐Assembly Systems with Different Terminal Groups for Sensitive Detection of Thionyl Chloride and Oxalyl Chloride in Two Modes

“…Comparing with other detection methods, the fluorescence‐based methods are fast, sensitive, cheap, and capable of spatial and temporal resolution [14–18] . In recent years, many materials are employed for preparing fluorescent probes, such as organic dyes, [19] metal complex, [20] polyoxometalates, [21] nanoparticle, [22] MOF, [23] COF, [24] metal cluster, [25] supramolecular gel, [26] and so on.…”

“…[13] Comparing with other detection methods, the fluorescence-based methods are fast, sensitive, cheap, and capable of spatial and temporal resolution. [14][15][16][17][18] In recent years, many materials are employed for preparing fluorescent probes, such as organic dyes, [19] metal complex, [20] polyoxometalates, [21] nanoparticle, [22] MOF, [23] COF, [24] metal cluster, [25] supramolecular gel, [26] and so on. For organic dyes, many dyes were used to construct into fluorescent sensors, such as coumarins, [27] Phthalocyanine, [28] pyrene, [29] fluorescein, [30] BODIPY, [31] naphthalimide, [32] nitrobenzoxadiazole, [33] cyanine.…”