scholarly journals Red emissive AIE nanodots with high two-photon absorption efficiency at 1040 nm for deep-tissue in vivo imaging

2015 ◽  
Vol 6 (10) ◽  
pp. 3783 ◽  
Author(s):  
Yalun Wang ◽  
Rongrong Hu ◽  
Wang Xi ◽  
Fuhong Cai ◽  
Shaowei Wang ◽  
...  
Keyword(s):  
In Vivo Imaging ◽  
Absorption Efficiency ◽  
Photon Absorption ◽  
Deep Tissue ◽  
Two Photon Absorption ◽  
Two Photon

scholarly journals Two-Photon Time-Gated In Vivo Imaging of Dihydrolipoic-Acid-Decorated Gold Nanoclusters

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7744
Author(s):  
Ye Tian ◽  
Ming Wei ◽  
Lijun Wang ◽  
Yuankai Hong ◽  
Dan Luo ◽  
...  
Keyword(s):  
In Vivo Imaging ◽  
Gold Nanoclusters ◽  
Photon Absorption ◽  
Gold Nanocluster ◽  
Time Resolved ◽  
Dihydrolipoic Acid ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Time Resolved Imaging

Due to the unique advantages of two-photon technology and time-resolved imaging technology in the biomedical field, attention has been paid to them. Gold clusters possess excellent physicochemical properties and low biotoxicity, which make them greatly advantageous in biological imaging, especially for in vivo animal imaging. A gold nanocluster was coupled with dihydrolipoic acid to obtain a functionalized nanoprobe; the material displayed significant features, including a large two-photon absorption cross-section (up to 1.59 × 105 GM) and prolonged fluorescence lifetime (>300 ns). The two-photon and time-resolution techniques were used to perform cell imaging and in vivo imaging.

Photostable far-red emitting pluronic silicate nanoparticles: perfect blood pool fluorophores for biphotonic in vivo imaging of the leaky tumour vasculature

RSC Advances ◽  
2016 ◽  
Vol 6 (96) ◽  
pp. 94200-94205 ◽  
Author(s):  
Zheng Zheng ◽  
Flavien Caraguel ◽  
Yuan-Yuan Liao ◽  
Chantal Andraud ◽  
Boudewijn van der Sanden ◽  
...  
Keyword(s):  
In Vivo Imaging ◽  
Blood Pool ◽  
Pluronic F127 ◽  
Photon Absorption ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon Microscopy ◽  
Two Photon ◽  
Tumour Vasculature

A new non-diffusible fluorescent probe for two photon microscopy, comprising a hydrophobic push-pull dye in the apolar core of Pluronic F127–silica nanoparticles, shows intense red emission (Φf 39% at 650 nm) and two-photon absorption properties in the NIR.

scholarly journals Polarity-active NIR probes with strong two-photon absorption and ultrahigh binding affinity of insulin amyloid fibrils

2021 ◽  
Author(s):  
Li Li ◽  
Zheng Lv ◽  
Zhongwei Man ◽  
Zhenzhen Xu ◽  
YuLing Wei ◽  
...  
Keyword(s):  
Neurodegenerative Diseases ◽  
Binding Affinity ◽  
Fluorescent Probes ◽  
Amyloid Fibrils ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Medical Diagnostic

Amyloid fibrils are associated with many neurodegenerative diseases. In-situ and in-vivo visualization of amyloid fibrils is important for medical diagnostic and requires fluorescent probes with both excitation and emission wavelengths in...

scholarly journals Simultaneous Control of Emission Localization and Two-Photon Absorption Efficiency in Dissymmetrical Chromophores

2010 ◽  
Vol 114 (9) ◽  
pp. 3152-3169 ◽  
Author(s):  
Claudine Katan ◽  
Marina Charlot ◽  
Olivier Mongin ◽  
Céline Le Droumaguet ◽  
Viatcheslav Jouikov ◽  
...  
Keyword(s):  
Absorption Efficiency ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Simultaneous Control

scholarly journals Rational design of small indolic squaraine dyes with large two-photon absorption cross section

2015 ◽  
Vol 6 (1) ◽  
pp. 761-769 ◽  
Author(s):  
Chun-Lin Sun ◽  
Qing Liao ◽  
Ting Li ◽  
Jun Li ◽  
Jian-Qiao Jiang ◽  
...  
Keyword(s):  
Cross Section ◽  
Rational Design ◽  
Photon Absorption ◽  
Absorption Cross ◽  
Two Photon Absorption ◽  
Squaraine Dyes ◽  
Two Photon ◽  
Bio Imaging

Assisted by theoretical analysis, we designed a small indolic squaraine with δ > 8000 GM at 780 nm, which is ideal for both in vitro and in vivo bio-imaging applications.

scholarly journals How to optimize the absorption of two entangled photons

2021 ◽  
Vol 4 (4) ◽  
Author(s):  
Edoardo Carnio ◽  
Andreas Buchleitner ◽  
Frank Schlawin
Keyword(s):  
Pulse Shaping ◽  
Absorption Efficiency ◽  
Photon Absorption ◽  
Spatial Light Modulators ◽  
Schmidt Decomposition ◽  
Maximum Enhancement ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Light Modulators ◽  
Down Conversion

We investigate how entanglement can enhance two-photon absorption in a three-level system. First, we employ the Schmidt decomposition to determine the entanglement properties of the optimal two-photon state to drive such a transition, and the maximum enhancement which can be achieved in comparison to the optimal classical pulse. We then adapt the optimization problem to realistic experimental constraints, where photon pairs from a down-conversion source are manipulated by local operations such as spatial light modulators. We derive optimal pulse shaping functions to enhance the absorption efficiency, and compare the maximal enhancement achievable by entanglement to the yield of optimally shaped, separable pulses.

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