Water-soluble long afterglow carbon dots/silica composites for dual-channel detection of alkaline phosphatase and multi-level information anti-counterfeiting

Sun, Xiangying; He, Wei; Liu, Bin

doi:10.1039/d2ay01587k

Cited by 6 publications

(6 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the resulting material can achieve high-efficiency luminescence not only in the solid state but also in aqueous solution. [167][168][169][170][171] Li et al [167] synthesized CDs encapsulated in a silica network via a gel-sol route, and the RTP was mainly due to the presence of C─O bonds in the CDs, whose main function is to facilitate the entry of ISC into the triplet state (Figure 16a). In addition, the covalent bonding between CDs and silica promotes the radiative complexation of T 1 electrons and suppresses the nonradiative jump.…”

Section: Organosilicon As Matrix For Rtp-cdsmentioning

confidence: 99%

See 1 more Smart Citation

Organosilicon‐Based Carbon Dots and Their Versatile Applications

Hu,

Wu,

Gong

2023

Small

View full text Add to dashboard Cite

Carbon dots (CDs) are a newly discovered type of fluorescent material that has gained significant attention due to their exceptional optical properties, biocompatibility, and other remarkable characteristics. However, single CDs have some drawbacks such as self‐quenching, low quantum yield (QY), and poor stability. To address these issues, researchers have turned to organosilicon, which is known for its green, economical, and abundant properties. Organosilicon is widely used in various fields including optics, electronics, and biology. By utilizing organosilicon as a synthetic precursor, the biocompatibility, QY, and resistance to self‐quenching of CDs can be improved. Meanwhile, the combination of organosilicon with CDs enables the functionalization of CDs, which significantly expands their original application scenarios. This paper comprehensively analyzes organosilicon in two main categories: precursors for CD synthesis and matrix materials for compounding with CDs. The role of organosilicon in these categories is thoroughly reviewed. In addition, the paper presents various applications of organosilicon compounded CDs, including detection and sensing, anti‐counterfeiting, optoelectronic applications, and biological applications. Finally, the paper briefly discusses current development challenges and future directions in the field.

show abstract

Section: Organosilicon As Matrix For Rtp-cdsmentioning

confidence: 99%

“…Therefore, the resulting material can achieve high‐efficiency luminescence not only in the solid state but also in aqueous solution. [ 167–171 ]…”

Section: Synthesis Of Cds Complexes Assisted By Organosiliconmentioning

confidence: 99%

Organosilicon‐Based Carbon Dots and Their Versatile Applications

Hu,

Wu,

Gong

2023

Small

View full text Add to dashboard Cite

show abstract

“…The two-step encapsulation process requires the preparation of luminescent CDs in the first step, followed by encapsulation of the CDs in suitable matrices to isolate the CDs from the quenching factors, allowing them to exhibit afterglow in aqueous solutions. [16,46] Silica offers superior advantages of stable physicochemical properties, unique structure, easy processability, and excellent optical transparency making it wellsuited as a matrix for encapsulating nanomaterials. Shan et al fabricated ultra-long water-soluble phosphorescence CNDs (WSP-CNDs@silica) by confining CNDs in silica encapsulation layers, as shown in Figure 6c.…”

Section: Two-step Encapsulationmentioning

confidence: 99%

“…The corresponding LOD was assessed at 0.186 U L −1 . [46] Similarly, Wang et al proposed a CDs@SiO 2 -based fluorescence and phosphorescence dual-signal sensor platform for multichannel detection of thiram in the presence of Cu 2+ ions via the inner filter effect. Thiram formation of the complex with Cu 2+ (thiram-Cu (II)) exhibits a characteristic absorption peak (≈400 nm).…”

Section: Data Encryptionmentioning

confidence: 99%

See 1 more Smart Citation

Endowing Carbon Dots with Long‐Lived Phosphorescence Emission in Aqueous Solutions

Li,

Zhao,

Zhang

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Room temperature phosphorescent carbon dots (RTP CDs) have received increasing attention in recent years due to their outstanding optical properties and potential applications. It is worth noting that RTP CDs in aqueous solution have inspired special interests because of their low toxicity, long lifetime, and ability to avoid autofluorescence and background fluorescence, exhibiting wide application prospects in time‐resolved biological imaging and sensing. However, achieving phosphorescent CDs in aqueous solutions remains a considerable challenge because water molecules and oxygen can cause the deactivation of triplet‐state excitons, resulting in phosphorescence quenching. Several strategies have been proposed to counter the problem including encapsulated CDs in a rigid matrix, hydrogen bonding, and covalent bonding fixation. Consequently, a more significant number of RTP CDs materials with excellent optical stability, long lifetime, and multicolor are successfully obtained. Herein, the recent development of RTP CDs materials in aqueous solution as well as the corresponding fabricated strategies and luminescence mechanism is detailly summarized and reviewed. Furthermore, various applications of water‐phase RTP CDs materials in information security, sensing, bioimaging, light‐emitting diodes, and fingerprinting are also discussed. Finally, an outlook on the development of CDs materials and applications is proposed.

show abstract

Rationally Designed Matrix‐Free Carbon Dots with Wavelength‐Tunable Room‐Temperature Phosphorescence

Cui

Zhang

et al. 2023

Chemistry An Asian Journal

View full text Add to dashboard Cite

We report the rational design of the matrix-free carbon dots (C-dots) with long wavelength and wavelengthtunable room-temperature phosphorescence (RTP). Taking advantage of microwave-assisted heating treatment, three RTP C-dots in boric acid (BA) composites are synthesized by using diethylenetriaminepentakis (methylphosphonic acid) as a multiple-sites crosslink agent, a moderately acid catalyst and P source; phenylenediamines (either o-PD, m-PD, or p-PD, respectively) as building block while BA as a carbon-ization-retardant matrix. After the water-soluble BA matrix is removed by dialysis, three matrix-free C-dots are obtained with RTP emission at 540, 550 and 570 nm under an excitation wavelength of 365 nm. Alterations of RTP emission of three matrix-free C-dots are ascribed to the difference in their particle size and band gap from n-π* transition. Furthermore, the application of three matrix-free C-dots are successfully performed in information encryption and decryption.

show abstract

Water-soluble long afterglow carbon dots/silica composites for dual-channel detection of alkaline phosphatase and multi-level information anti-counterfeiting

Abstract: The CDs/SiO2 composites were used in detection of the dual-optical mode alkaline phosphatase and multi-level information anti-counterfeiting.

Cited by 6 publications

References 36 publications

Organosilicon‐Based Carbon Dots and Their Versatile Applications

Organosilicon‐Based Carbon Dots and Their Versatile Applications

Endowing Carbon Dots with Long‐Lived Phosphorescence Emission in Aqueous Solutions

Rationally Designed Matrix‐Free Carbon Dots with Wavelength‐Tunable Room‐Temperature Phosphorescence

Contact Info

Product

Resources

About