The fabrication of nanodiamond doped tellurite germanate glass with robust structure and its luminescence

Abstract

Fluorescence of negative‐charged nitrogen‐vacancy centers in nanodiamond allows applications in quantum metrology, nanoscale sensor, and bioimaging, of utmost relevance to domains from nanotechnologies to biosensing. However, the low color center content and collection efficiency of photons are crucial issues. Although, several studies about coupling nanodiamond into optical waveguides have already been proposed, the search for the most appropriate substance and simplest, most effective method are of keys. In this study, we present a novel nontraditional way to incorporate nanodiamond with increased negative‐charged nitrogen‐vacancy content to 75.48% into tellurite germanate glass. The hybrid glass is stable in structure with predominant TeO4 trigonal bipyramid. Moreover, the fluorescence intensity is enhanced in composite. Such robust nanodiamond in tellurite germanate glass optical system has the potential to be used for nanoparticle sensing and quantum metrology.

Multiple Bioimaging Applications Based on the Excellent Properties of Nanodiamond: A Review

“…The analysis of the pristine ND lines reveals a broad peak between 1500 and 1700 cm −1 , generally referred to as the “G-band”, which is mainly attributed to graphitic carbon, mixed sp 2 and sp 3 in-plane vibrations, and split gap defects within the diamond core. The treated-ND (t-ND) after the annealing and oxidation steps appears with a smaller spectral band (G-band) at 1580 cm −1 , indicating that the oxidation process eliminated the graphite layer [ 51 ]. HPHT NDs are generally above 100 nm in size, and their characteristic Raman peaks are very clear and are often used as imaging probes for biological tissue structures [ 52 ].…”

“…Lin et al proposed to use the Raman spectral information of NDs and gold hybrid nanoparticles (ND@Au) combined with Intracellular ND@Au imaging to obtain information such as cellular composition, structure, and location [ 41 ]. Xu et al combined Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) to derive the composition of tND-TZNGB [t-ND doped tellurite germanate glass [ 51 ]. The typical Raman peaks of the cells were found to be generally located at 2800–3200 cm −1 , which is far from the characteristic Raman peaks of NDs, so the Raman detection method can well avoid the influence of background biological tissues [ 52 ].…”

“…Xu et al used XPS to study the chemical state and the chemical environment of the constituent elements in tND-TZNGB glass. The analysis of different dimensions of tND-TZNGB showed that the mixture is a promising nanomaterial for a wide range of applications [ 51 ]. Han et al performed XPS analysis in order to verify the elemental composition, bonding state, and nitrogen concentration of the sample [ 37 ].…”

Preparation of Nanodiamond‐Fucoxanthin and Its Application as a Nanodrug Delivery System

“…[5] Among several carbon nanomaterials, NDs are considered significant owing to their good biocompatibility and low toxicity. [6] NDs have great potential for use in biosensors; [7] drug, gene, and protein carriers; [8] tumor targeting; [9] bioimaging; [10] diagnostics; and therapies. [11] Several anticancer medications have low bioavailability, are poorly soluble in water, and are more likely to cause harmful side effects and drug resistance over time.…”

“…Among several carbon nanomaterials, NDs are considered significant owing to their good biocompatibility and low toxicity [6] . NDs have great potential for use in biosensors; [7] drug, gene, and protein carriers; [8] tumor targeting; [9] bioimaging; [10] diagnostics; and therapies [11] …”