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Carbon Dots: Near‐Infrared Excitation/Emission and Multiphoton‐Induced Fluorescence of Carbon Dots (Adv. Mater. 13/2018)
Author(s) -
Li Di,
Jing Pengtao,
Sun Lihuan,
An Yang,
Shan Xinyan,
Lu Xinghua,
Zhou Ding,
Han Dong,
Shen Dezhen,
Zhai Yuechen,
Qu Songnan,
Zbořil Radek,
Rogach Andrey L.
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201870092
Subject(s) - materials science , fluorescence , photochemistry , femtosecond , carbon fibers , infrared , absorption (acoustics) , excitation , near infrared spectroscopy , quantum dot , optoelectronics , analytical chemistry (journal) , laser , optics , organic chemistry , chemistry , physics , electrical engineering , composite number , composite material , engineering
Both a near‐infrared (NIR) absorption band and enhanced NIR fluorescence are realized by Songnan Qu, Andrey L. Rogach, and co‐workers, in article number 1705913 , through surface engineering of carbon dots, exploiting electron‐acceptor groups, namely molecules or polymers rich in sulfoxide/carbonyl groups. Twophoton‐induced NIR emission and three‐photon‐induced red emission are simultaneously observed for carbon dots in dimethyl sulfoxide under excitation of a 1400 nm femtosecond pulse laser in the NIR‐II window.