Two-photon excited deep-red and near-infrared emissive organic co-crystals

Yu Wang, Huang Wu, Penghao Li, Su Chen, Leighton O. Jones, Martín A. Mosquera, Long Zhang, Kang Cai, Hongliang Chen, Xiao Yang Chen, Charlotte L. Stern, Michael R. Wasielewski, Mark A. Ratner, George C. Schatz, J. Fraser Stoddart*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Two-photon excited near-infrared fluorescence materials have garnered considerable attention because of their superior optical penetration, higher spatial resolution, and lower optical scattering compared with other optical materials. Herein, a convenient and efficient supramolecular approach is used to synthesize a two-photon excited near-infrared emissive co-crystalline material. A naphthalenediimide-based triangular macrocycle and coronene form selectively two co-crystals. The triangle-shaped co-crystal emits deep-red fluorescence, while the quadrangle-shaped co-crystal displays deep-red and near-infrared emission centered on 668 nm, which represents a 162 nm red-shift compared with its precursors. Benefiting from intermolecular charge transfer interactions, the two co-crystals possess higher calculated two-photon absorption cross-sections than those of their individual constituents. Their two-photon absorption bands reach into the NIR-II region of the electromagnetic spectrum. The quadrangle-shaped co-crystal constitutes a unique material that exhibits two-photon absorption and near-infrared emission simultaneously. This co-crystallization strategy holds considerable promise for the future design and synthesis of more advanced optical materials.

Original languageEnglish (US)
Article number4633
JournalNature communications
Volume11
Issue number1
DOIs
StatePublished - Dec 1 2020

Funding

The authors thank Northwestern University (NU) for its support of this research. The authors would like to thank Professor Justin Notestein and Mark Taylor for technical support on solid-state UV-Vis absorption spectroscopy measurements. The A1R-MP+ multiphoton microscope was acquired through an S10 shared instrumentation grant awarded to Teng-Leong Chew (1 S10 OD010398-01). This work made use of the NUFAB facility of Northwestern University’s NUANCE Center, NNCI-SHyNE Resource (NSF ECCS-1542205) and the MRSEC program (NSF DMR-1720139) at the Materials Research Center. L.O.J. and G.C.S. acknowledge support from NSF grant CHE-1836392 (two-photon applications); M.A.M., G.C.S., and M.A.R. acknowledge support from the Department of Energy, grant DE-AC02-06CH11357 (functional materials and spectroscopy applications), and grant DE-SC0004752 (theory development). This research was also supported in part through the computational resources and staff contributions provided for the Quest high performance computing facility at Northwestern University which is jointly supported by the Office of the Provost, the Office for Research, and Northwestern University Information Technology. S.C. and M.R.W. thank the support from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award DE-FG02-99ER14999.

ASJC Scopus subject areas

  • General
  • General Physics and Astronomy
  • General Chemistry
  • General Biochemistry, Genetics and Molecular Biology

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