A cyanine based fluorophore emitting both single photon near-infrared fluorescence and two-photon deep red fluorescence in aqueous solution

2012 ◽  
Vol 10 (28) ◽  
pp. 5366 ◽  
Author(s):  
Lu Wang ◽  
Jiefu Jin ◽  
Xishan Chen ◽  
Hai-Hua Fan ◽  
Billy King Fai Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Near Infrared ◽  
Single Photon ◽  
Near Infrared Fluorescence ◽  
Red Fluorescence ◽  
Two Photon

One-pot synthesis of ternary CuInS2quantum dots with near-infrared fluorescence in aqueous solution

RSC Advances ◽  
2012 ◽  
Vol 2 (3) ◽  
pp. 819-825 ◽  
Author(s):  
Siyu Liu ◽  
Hao Zhang ◽  
Yu Qiao ◽  
Xingguang Su
Keyword(s):  
Aqueous Solution ◽  
Near Infrared ◽  
One Pot ◽  
Near Infrared Fluorescence ◽  
One Pot Synthesis

scholarly journals Two-photon quantum interference and entanglement at 2.1 μm

2020 ◽  
Vol 6 (13) ◽  
pp. eaay5195 ◽  
Author(s):  
Shashi Prabhakar ◽  
Taylor Shields ◽  
Adetunmise C. Dada ◽  
Mehdi Ebrahim ◽  
Gregor G. Taylor ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Communication Systems ◽  
Near Infrared ◽  
Single Photon ◽  
Satellite Communications ◽  
Optical Systems ◽  
Fiber Communication ◽  
Spectral Window ◽  
Mid Infrared ◽  
Two Photon

Quantum-enhanced optical systems operating within the 2- to 2.5-μm spectral region have the potential to revolutionize emerging applications in communications, sensing, and metrology. However, to date, sources of entangled photons have been realized mainly in the near-infrared 700- to 1550-nm spectral window. Here, using custom-designed lithium niobate crystals for spontaneous parametric down-conversion and tailored superconducting nanowire single-photon detectors, we demonstrate two-photon interference and polarization-entangled photon pairs at 2090 nm. These results open the 2- to 2.5-μm mid-infrared window for the development of optical quantum technologies such as quantum key distribution in next-generation mid-infrared fiber communication systems and future Earth-to-satellite communications.

scholarly journals Поляризованная флуоресценция молекул NADH при двухфотонном возбуждении фемтосекундными лазерными импульсами с длиной волны 720-780 nm

2019 ◽  
Vol 45 (13) ◽  
pp. 37
Author(s):  
М.Э. Сасин ◽  
И.А. Горбунова ◽  
Н.O. Безверхний ◽  
Я.М. Бельтюков ◽  
J. Rubayo-Soneira ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Single Photon ◽  
Laser Pulses ◽  
Time Correlation ◽  
Femtosecond Laser Pulses ◽  
Diffusion Time ◽  
Methanol Solution ◽  
Polarized Fluorescence ◽  
Two Photon ◽  
Photon Excitation

The decay of polarized fluorescence in coenzyme NADH upon two-photon excitation by femtosecond laser pulses at the wavelength range of 720- 780 nm in water/methanol solution has been investigated. Decay fluorescence times tau_1 and tau_2, rotation diffusion time tau_rot, and preexponential factors a_1/a_2 ratio have been determined from experiment. The results obtained have been compared with previous results in NADH in aqueous solution. polarized fluorescence, NADH, adenine, nicotinamide, spectroscopy, time correlation single photon spectroscopy

Fabrication of transferrin modified two-photon gold nanoclusters with near-infrared fluorescence and its application for bioimaging

2021 ◽  
Author(s):  
Kangdi He ◽  
Shengrong Yu ◽  
Xiao Wang ◽  
Dian Li ◽  
Jia Chen ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Near Infrared ◽  
Gold Nanoclusters ◽  
Living Cells ◽  
Resonance Imaging ◽  
Near Infrared Fluorescence ◽  
Two Photon ◽  
Nir Fluorescence

Transferrin modified AuNCs (Tf-AuNCs) with TP-NIR fluorescence was prepared, and a novel nanoprobe platform Tf-AuNCs@MnO2 was developed for effectively TP-NIR fluorescence and magnetic resonance imaging of living cells and tissues...

Multi-Photon Fluorescence Spectroum of Common Nucleic Acid Probes

2000 ◽  
Vol 6 (S2) ◽  
pp. 820-821
Author(s):  
P. C. Cheng ◽  
B. L. Lin ◽  
F. J. Kao ◽  
C. K. Sun ◽  
I. Johnson
Keyword(s):  
Fluorescence Microscopy ◽  
Fluorescent Probes ◽  
Fluorescence Spectra ◽  
Near Infrared ◽  
Single Photon ◽  
Spectral Response ◽  
Two Photon ◽  
Photon Excitation ◽  
Two Photon Fluorescence ◽  
Photon Fluorescence

Fluorescent probes are commonly used in biological fluorescence microscopy for tracking specific structures and sub-cellular compartments, and for indicating cellular ionic conditions. Recent development in multi-photon fluorescence microscopy has greatly expanded the usage of fluorescent probes in biomedical research. Considering its non-linear nature, two-photon excitation may generate very different fluorescence spectral response in the sample when compared with single photon excitation. It is thus necessary to measure the two-photon spectra of various fluorescent probes, so that two-photon fluorescence microscopy may be operated effectively and the images properly interpreted. This report represents the first installment of a continued effort in characterizing the multi-photon fluorescence spectra of commonly used bio-probes.Two-photon fluorescence spectra excited with near infrared at 780nm were obtained with a SpectraPro-500 spectrophotometer (Acton Research) equipped with a TE-cooled PMT and coupled to a Spectra-Physics Tsunami Ti-sapphire laser pumped by a Coherent Verdi solid-state laser operated at 85MHz, l00fs pulse.

Synthesis of a BODIPY disulfonate near-infrared fluorescence-enhanced probe with high selectivity to endogenous glutathione and two-photon fluorescent turn-on through thiol-induced SNAr substitution

2018 ◽  
Vol 6 (19) ◽  
pp. 3023-3029 ◽  
Author(s):  
Xiang Xia ◽  
Ying Qian ◽  
Baoxing Shen
Keyword(s):  
Near Infrared ◽  
High Selectivity ◽  
Fluorescence Probe ◽  
Selective Detection ◽  
Near Infrared Fluorescence ◽  
Two Photon ◽  
Turn On

A BODIPY disulfonate BODIPY-diONs with two-photon fluorescent turn-on effect was developed as fluorescence probe for selective detection of glutathione over cysteine and homocysteine.

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