Supramolecular ensembles modified by near-infrared dyes and their biological applications

Abstract

Near-infrared dyes with the ability of less interference of biological autofluorescence, low photon scattering and deep tissue penetration have become an increasing role in development of biomaterials in sensing and...

Albumin-based nanoparticle for dual-modality imaging of the lymphatic system

“…NIR uorescent dyes have strong emission characteristics and limited autouorescence in aqueous solvents. [28][29][30] The most common NIR uorescent dyes are polymethine cyanine dyes, including pentamethine cyanine and heptamethine cyanine. [31][32][33] Their extinction coefficients are very high (up to 150 000-250 000 L (mol −1 cm −1 )), and they can be detected in deep tissues under the action of excitation light but cannot be observed with the naked eye.…”

Design, synthesis and performance of novel fluorescent polymer microspheres tracers based on aggregation induced emission

“…As the most widely used tracers, there are rich range of chemical tracers, especially among them fluorescent chemical tracers 21–26 which have attracted a lot of attention in oilfield operations due to their high sensitivity, low usage, low detection limits, and simple analytical methods. However, some fluorescent tracers currently used are small molecular fluorescent dyes, and their main problems are poor thermal stability, easy photobleaching, poor resistance to acid and alkali, and poor ability to interfere with metal ions in hydrocarbon‐bearing formation 27 . These factors affect their application in actual production to a certain extent.…”

Engineering naphthalimide-cyanine integrated near-infrared dye into ROS-responsive nanohybrids for tumor PDT/PTT/chemotherapy

“…Chemotherapy can solve the limitation of light penetration in phototherapy, and it may also enhance the sensitivity of cancer cells to hyperthermia or ROS. The phototherapy has a broad spectrum and can solve the problem of chemotherapeutic drug resistance [ [21] , [22] , [23] ].…”