High‐Resolution Imaging of Latent Fingerprints through Near‐Infrared Organoboron AIEgens^†

Abstract

Comprehensive Summary A new class of near‐infrared (NIR) fluorescent organoboron AIEgens was successfully developed for latent fingerprints (LFPs) imaging. They exhibit real‐time and in situ high‐resolution imaging performance at 1—3 levels of LFPs by spraying method. In addition, we systematically elucidate the fingerprint imaging mechanism of these AIEgens. Significantly, the excellent level 3 structural imaging capabilities enable the application of them for analyzing incomplete LFPs and identifying individuals in different scenarios.

Aggregation-Induced Emission (AIE), Life and Health

“…With enhanced light penetration and lower background signals, near-infrared (NIR) imaging can offer improved performance when compared with traditional techniques at the shorter wavelength region. − Taking advantage of the AIE features and their long emission wavelength, NIR AIEgens can not only provide desirable photostability and enhanced fluorescence efficiency in aggregates but also exhibit reduced tissue scattering, enhanced penetration depth, diminished autofluorescence, and minimal photodamage to biological tissues. − A win-win cooperation could be achieved by combining NIR emission into luminogens with AIE characteristics, enabling better bioimaging quality and rapid development for biological applications.…”

Recent progress on the construction and application of dithienylethene‐based photochromic AIEgens

“…Image-guided radiotherapy is an imaging technology using various imaging equipment, which can monitor the tumor and normal organs in real time during the treatment of patients, and then adjust the irradiation range in time. 60 In 2023, Ding and coworkers 51…”

“…Fingerprint identification is the most important and widely used technology in biometric identification technology. It uses the uniqueness and lifelong invariance of fingerprint features to authenticate personal identity, which is highly secure and easy to use 60 …”

“…Image‐guided radiotherapy is an imaging technology using various imaging equipment, which can monitor the tumor and normal organs in real time during the treatment of patients, and then adjust the irradiation range in time 60 . In 2023, Ding and coworkers 51 reported a molecule RC‐DTE‐DPA‐SCP with convertible photochromic function, which can be used as a “once and for all” nano‐preparation, showing great potential in solving complex biomedical problems.…”

Perylene diimide with solid-state NIR luminescence for imaging of latent fingerprints (sweat pores)

“…22 Indeed, the identification of LFPs is arduous due to their naked eye invisibility in comparison to other types of fingerprints. 23 Although a sebum rich papillary ridge could leave its secretion on the surface, its poor optical contrast with the background makes it difficult to visualize. So, chemical methods are used to enhance the visual contrast.…”