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Enabling three-dimensional porous architectures via carbonyl functionalization and molecular-specific organic-SERS platforms

Author

Listed:
  • Ibrahim Deneme

    (Abdullah Gül University)

  • Gorkem Liman

    (Bio-inspired Materials Research Laboratory (BIMREL), Department of Chemistry, Gazi University)

  • Ayse Can

    (Abdullah Gül University)

  • Gokhan Demirel

    (Bio-inspired Materials Research Laboratory (BIMREL), Department of Chemistry, Gazi University)

  • Hakan Usta

    (Abdullah Gül University)

Abstract

Molecular engineering via functionalization has been a great tool to tune noncovalent intermolecular interactions. Herein, we demonstrate three-dimensional highly crystalline nanostructured D(C7CO)-BTBT films via carbonyl-functionalization of a fused thienoacene π-system, and strong Raman signal enhancements in Surface-Enhanced Raman Spectroscopy (SERS) are realized. The small molecule could be prepared on the gram scale with a facile synthesis-purification. In the engineered films, polar functionalization induces favorable out-of-plane crystal growth via zigzag motif of dipolar C = O···C = O interactions and hydrogen bonds, and strengthens π-interactions. A unique two-stage film growth behavior is identified with an edge-on-to-face-on molecular orientation transition driven by hydrophobicity. The analysis of the electronic structures and the ratio of the anti-Stokes/Stokes SERS signals suggests that the π-extended/stabilized LUMOs with varied crystalline face-on orientations provide the key properties in the chemical enhancement mechanism. A molecule-specific Raman signal enhancement is also demonstrated on a high-LUMO organic platform. Our results demonstrate a promising guidance towards realizing low-cost SERS-active semiconducting materials, increasing structural versatility of organic-SERS platforms, and advancing molecule-specific sensing via molecular engineering.

Suggested Citation

  • Ibrahim Deneme & Gorkem Liman & Ayse Can & Gokhan Demirel & Hakan Usta, 2021. "Enabling three-dimensional porous architectures via carbonyl functionalization and molecular-specific organic-SERS platforms," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26385-7
    DOI: 10.1038/s41467-021-26385-7
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    References listed on IDEAS

    as
    1. Abdur Rahim & Pinaki Saha & Kunal Kumar Jha & Nagamani Sukumar & Bani Kanta Sarma, 2017. "Reciprocal carbonyl–carbonyl interactions in small molecules and proteins," Nature Communications, Nature, vol. 8(1), pages 1-13, December.
    2. Calvin Boerigter & Robert Campana & Matthew Morabito & Suljo Linic, 2016. "Evidence and implications of direct charge excitation as the dominant mechanism in plasmon-mediated photocatalysis," Nature Communications, Nature, vol. 7(1), pages 1-9, April.
    3. Gokhan Demirel & Rebecca L. M. Gieseking & Resul Ozdemir & Simon Kahmann & Maria A. Loi & George C. Schatz & Antonio Facchetti & Hakan Usta, 2019. "Molecular engineering of organic semiconductors enables noble metal-comparable SERS enhancement and sensitivity," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
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