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Title: Strong coupling of carbon quantum dots in liquid crystals
Authors: Sarısözen, Sema
Polat, Nahit
Mert Balcı, Fadime
Güvenç, Çetin Meriç
Kocabaş, Çoşkun
Yağlıoğlu, Halime Gül
Balcı, Sinan
01. Izmir Institute of Technology
01. Izmir Institute of Technology
01. Izmir Institute of Technology
01. Izmir Institute of Technology
University of Manchester
Ankara Üniversitesi
01. Izmir Institute of Technology
Keywords: Absorption spectroscopy
Excited state
Quantum dots
Issue Date: Apr-2022
Publisher: American Chemical Society
Abstract: Carbon quantum dots (CDs) have recently received a tremendous amount of interest owing to their attractive optical properties. However, CDs have broad absorption and emission spectra limiting their application ranges. We herein, for the first time, show synthesis of water-soluble red emissive CDs with a very narrow line width (∼75 meV) spectral absorbance and hence demonstrate strong coupling of CDs and plasmon polaritons in liquid crystalline mesophases. The excited state dynamics of CDs has been studied by ultrafast transient absorption spectroscopy, and CDs display very stable and strong photoluminescence emission with a quantum yield of 35.4% and a lifetime of ∼2 ns. More importantly, we compare J-aggregate dyes with CDs in terms of their absorption line width, photostability, and ability to do strong coupling, and we conclude that highly fluorescent CDs have a bright future in the mixed light-matter states for emerging applications in future quantum technologies.
Appears in Collections:Chemistry / Kimya
Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Photonics / Fotonik
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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