Near-infrared emission of a novel nonconventional luminophore for in vitro imaging

Abstract

Luminogens without recognizable luminophores are attracting increasing attention owing to their particular photophysical properties and outstanding biocompatibility features. Despite the rapid advance, it is still a formidable challenge to synthesize...

A Self‐Assemble Supramolecular Film with Humidity Visualization Enabled by Clusteroluminescence

“…These observations suggest the formation of new chromophores in PMV‐LA, which may be attributed to the introduction of electron‐rich atoms in the anhydride group, facilitating TSI of subgroups. [ 12 ] Considering that most CLgens emit in the blue region, this amide reaction could serve as a new approach to realize the red emission of maleic anhydride copolymers.…”

Highly efficient and thermally stable broadband near-infrared emitting garnet Ca3Sc2Ge3O12:Cr3+,Ce3+ phosphors for multiple pc-LED applications

“…[25][26][27] In particular, Liu et al revealed the relationship between the crystal field intensities of Ce 3+ and Cr 3+ , that is, when Ce 3+ is located in a weak crystal field, the emission of Cr 3+ will also produce broadband emission due to its presence in the weak crystal field. 28 And the absorption bands of Cr 3+ doped NIR phosphors are mostly located in the blue-green light region, which means that Ce 3+ is an excellent sensitizer for Cr 3+ activated broadband NIR phosphors. Wu et al co-doped Ce 3+ into Ca 2 LuHf 2 Al 3 O 12 :Cr 3+ to increase the emission intensity of Cr 3+ by three times through energy transfer from Ce 3+ to Cr 3+ .…”

Abnormal spectral broadening of ordered-structure near-infrared phosphor La2CaHfO6:Cr3+

“…Traditional light sources, such as tungsten-halogen lamps, can meet the demands of the broadband emission, but they are large in volume, poor in efficiency and short in lifetime, which limits their practical utilization. 7 NIR LEDs can overcome the above disadvantages, but their applications are restricted by the relatively narrow FWHM (o50 nm). 8 NIR pc-LEDs, fabricated using blue LEDs to excite NIR phosphors, are considered as the ideal NIR light source as they have the merits of a minor environmental impact, compactness, and energy saving.…”