Green and facile synthesis of silicon-doped carbon dots and their use in detection of Hg²⁺ and visualization of latent fingerprints

Abstract

Mercury (Hg) is the most toxic heavy metal which can lead severe irreversible injure to human health and serious pollution. It is of great significance to explore precise and facile...

A preparation strategy for multicolor carbon dots embedded in silicone for latent fingermarks and detection of AcO−

“…There are many powder dusting methods to develop fingerprints by using CDs, and most of them can only detect level 2 details. 10,23,39,40…”

“…Consequently, research on CDs has developed rapidly in the past decade. Its related research has appeared in frontier fields such as display lighting, 9 detection, [10][11][12] agriculture 13 and medical research. [14][15][16] There are still many application problems and coping strategies.…”

“…There are many powder dusting methods to develop fingerprints by using CDs, and most of them can only detect level 2 details. 10,23,39,40 The greatest advantage of preparing CDs using the solvothermal method is its simplicity and convenience, but there are many side effects and cumbersome purification processes. Purification needs to go through slow dialysis (or column chromatography), rotary evaporation, and freeze-drying processes, which seriously weaken its advantages.…”

Fluorescent‐Dye‐Doped Nanoporous Silica Powder for Imaging of Latent Fingerprints (Levels 1–3) and Case Studies

“…[16][17][18][19][20][21][22] In some cases, non-covalent adsorption of organic fluorophore on matrices may be beneficial in many aspects such as low cost (in comparison to rare earth doped materials polymers), easy modification and uniform distribution. [23][24][25][26][27][28][29] Naphthalimide (NI) is an excellent fluorophore and substitution at 4th position renders it useful for various applications. [30][31] Naphthalimide fluorophore has been explored for supramolecular sensing of cations, anion and neutral species, optoelectronics devices, in medicinal chemistry, for binding with DNA/RNA.…”

“…Several chemical/reagents such as Ninhydrin, 1,8‐diazafluoren‐9‐one, AgNO 3 , cyanoacrylate fuming, iodine fuming and conjugated materials are used for development of fingerprints however powder dusting method using fluorescent organic materials present paradigm shift in forensic applications [16–22] . In some cases, non‐covalent adsorption of organic fluorophore on matrices may be beneficial in many aspects such as low cost (in comparison to rare earth doped materials polymers), easy modification and uniform distribution [23–29] …”