Related Experiment Video
Updated: Jan 25, 2026

Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis
Published on: January 6, 2016
A magnetofluorescent boron-doped carbon dots as a metal-free bimodal probe
Xiuxiu Zhao1, Luxi Dong2, Yali Ming1
1School of Chemical Engineering and Technology, Hebei University of Technology, Guangrong Dao No. 8, Hongqiao District, Tianjin 300130, China.
Abstract:
High-resolution observation of biological process is vital for biological researches and diagnosing diseases, which requires accurate diagnosis that involves coordinating imaging technologies such as fluorescence and magnetic resonance (MR). Nowadays, metal-based labels have been used for dual modality imaging. However, heavy metal ions are not environment-and organism-friendly. Therefore, it is a desirable to fabricate a metal-free label with fluorescence and MR properties. Herein, we synthesized boron-doped carbon dots (B-CDs) with dual modal properties through a one-pot solvothermal process. Compared with boron-free CDs, B-CDs exhibited apparent red-shift fluoresence emission, higher fluorescence intensity, and higher longitudinal relaxivity (r1 = 5.13 mM-1 s-1). It demonstrated that boron doping can enhance the fluorescence intensity of CDs, and maybe lead to form paramagnetic centers. The fluorescence and MR imaging of B-CDs make them a prospective label for clinical applications as a result of their oversimplified synthesis process, low cost, good biocompatibility and low toxicity. It will open a new window for building novel imaging labels.
More Related Videos
Related Concept Videos
The Carbon Cycle
Carbon Skeletons
Bonding in Metals
Metallic Solids
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
Dot Product
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...
Alkali Metals
Table 1: Properties of the alkali metals

