PMID- 35103704
OWN - NLM
STAT- MEDLINE
DCOM- 20220203
LR  - 20220203
IS  - 1539-4794 (Electronic)
IS  - 0146-9592 (Linking)
VI  - 47
IP  - 3
DP  - 2022 Feb 1
TI  - Extraordinary approach to further boost plasmonic NIR-SERS by cryogenic 
      temperature-suppressed non-radiative recombination.
PG  - 670-673
LID - 10.1364/OL.447995 [doi]
AB  - We report an effective strategy to promote the near-infrared surface-enhanced 
      Raman scattering spectroscopy (NIR-SERS) activity by boosting the photon-induced 
      charge transfer (PICT) efficiency at cryogenic temperature. Based on as-prepared 
      Au/Ag nano-urchins (NUs) with abundant surface defects, the extremely low 
      temperature (77 K) can significantly weaken the metallic lattice vibration and 
      reduce the recombination of thermal phonons and photoexcited electrons, then 
      accelerate the migration of energetic electrons. It enables the NIR-SERS 
      detection limit of dye molecules to be achieved at 10(-17) M, which is nearly 
      three orders of magnitude better than that at room temperature. The present work 
      provides a new, to the best of our knowledge, approach for ultra-trace NIR-SERS 
      bioanalysis.
FAU - Ma, Hui
AU  - Ma H
FAU - Tian, Yue
AU  - Tian Y
FAU - Jiao, Anxin
AU  - Jiao A
FAU - Wang, Chang
AU  - Wang C
FAU - Zhang, Mengya
AU  - Zhang M
FAU - Zheng, Linqi
AU  - Zheng L
FAU - Li, Guihua
AU  - Li G
FAU - Li, Shuang
AU  - Li S
FAU - Chen, Ming
AU  - Chen M
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Opt Lett
JT  - Optics letters
JID - 7708433
SB  - IM
MH  - Recombination, Genetic
MH  - *Spectroscopy, Near-Infrared
MH  - *Spectrum Analysis, Raman
MH  - Temperature
EDAT- 2022/02/02 06:00
MHDA- 2022/02/04 06:00
CRDT- 2022/02/01 12:13
PHST- 2022/02/01 12:13 [entrez]
PHST- 2022/02/02 06:00 [pubmed]
PHST- 2022/02/04 06:00 [medline]
AID - 468874 [pii]
AID - 10.1364/OL.447995 [doi]
PST - ppublish
SO  - Opt Lett. 2022 Feb 1;47(3):670-673. doi: 10.1364/OL.447995.