Ultrathin near-infrared transmitting films enabled by deprotonation-induced intramolecular charge transfer of a dopant.

ABSTRACT: Near-infrared transparent films demonstrate important applications in many fields, but how to eliminate light interference from ultraviolet-visible region and how to tackle the trade-off effect between film thickness and transmittance remain as challenges. Herein, we report a near-infrared transparent film that achieves high-efficient combination of thin thickness (16 μm), suitable cut-off wavelength (890 nm), and ideal transmittance (T_NIR > 90%, T_Vis < 1%). Moreover, the film is photo-chemically stable, heating resistance and moisture insensitive. The key component of the film is a complex of a specially designed boron compound containing a perylene monoimide unit (PMI-CBN) with an organic base 1,8-diazabicyclo[5,4,0]undec-7-ene. The complex depicts red-shifted absor

SUBMITTER: Hu D 

PROVIDER: S-EPMC11410928 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature