TY - JOUR
T1 - Long-lived NIR emission in sulfur-doped zeolites due to the presence of [S3]2- clusters
AU - Viola, Catarina
AU - Laia, César A. T.
AU - Outis, Mani
AU - Ferreira, Luís F. V.
AU - Alves, Luís C.
AU - Teixeira, Miguel
AU - Folgosa, Filipe
AU - Lima, João C.
AU - Ruivo, Andreia
AU - Avó, João
N1 - Funding Information:
info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F145009%2F2019/PT#
info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBPD%2F120599%2F2016/PT#
info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FQUI-QFI%2F32007%2F2017/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04565%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04565%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50006%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50006%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00729%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00729%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04349%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04612%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04612%2F2020/PT#
info:eu-repo/grantAgreement/EC/H2020/810856/EU#
the individual contract 2020.00252.
CEECIND and several projects PTDC/QUI- LA/P/0140/2020, LAQV-REQUIMTE (LA/P/0008/2020).
LS4FUTURE Associated Laboratory (LA/P/0087/2020)
Publisher Copyright:
© 2023 The Author(s)
PY - 2023/6
Y1 - 2023/6
N2 - The exploration of novel long-lived near-infrared (NIR) luminescent materials has attracted significant attention due to their applications in optical communications, anticounterfeiting, and bioimaging. However, these materials usually present low photoluminescence quantum yields and low photo- and chemical stability. Novel emitters that overcome these limitations are in demand. In this study, NIR emission was achieved using widely available, sustainable, and non-toxic materials through the synthesis of sulfur-doped zeolites, with different S/Cl ratios. With a combination of computational calculations (TD-DFT) and spectroscopic data, this emission was assigned to the radiative decay of excited triplet states of [S3]2- clusters, which resulted in a remarkably high Stokes shift (1.97 eV, 440 nm) and an average decay time of 0.54 ms. These new materials present high stability, external quantum efficiency of up to 17%, and a long-lived NIR emission, placing these compounds in a unique position to be used in applications demanding NIR emitters.
AB - The exploration of novel long-lived near-infrared (NIR) luminescent materials has attracted significant attention due to their applications in optical communications, anticounterfeiting, and bioimaging. However, these materials usually present low photoluminescence quantum yields and low photo- and chemical stability. Novel emitters that overcome these limitations are in demand. In this study, NIR emission was achieved using widely available, sustainable, and non-toxic materials through the synthesis of sulfur-doped zeolites, with different S/Cl ratios. With a combination of computational calculations (TD-DFT) and spectroscopic data, this emission was assigned to the radiative decay of excited triplet states of [S3]2- clusters, which resulted in a remarkably high Stokes shift (1.97 eV, 440 nm) and an average decay time of 0.54 ms. These new materials present high stability, external quantum efficiency of up to 17%, and a long-lived NIR emission, placing these compounds in a unique position to be used in applications demanding NIR emitters.
KW - Chalcogen-doped zeolites
KW - Luminescent materials
KW - Near-infrared luminescence
KW - Optical spectroscopy
KW - Time-resolved spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85153206925&partnerID=8YFLogxK
U2 - 10.1016/j.mtchem.2023.101514
DO - 10.1016/j.mtchem.2023.101514
M3 - Article
AN - SCOPUS:85153206925
VL - 30
JO - Materials Today Chemistry
JF - Materials Today Chemistry
M1 - 101514
ER -