Cyclometalated Ir(iii) complexes with styryl-BODIPY ligands showing near IR absorption/emission: preparation, study of photophysical properties and application as photodynamic/luminescence imaging materials

2014 ◽  
Vol 2 (19) ◽  
pp. 2838-2854 ◽  
Author(s):  
Poulomi Majumdar ◽  
Xiaolin Yuan ◽  
Shengfu Li ◽  
Boris Le Guennic ◽  
Jie Ma ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Ir Absorption ◽  
Luminescence Imaging ◽  
Near Ir ◽  
Nir Absorption

Heteroleptic C^N cyclometalated iridium(iii) complexes showing strong NIR absorption were prepared.

Synthesis and photophysical properties of orthogonal rhodium(iii)–carbon bonded porphyrin–aza-BODIPY conjugates

2016 ◽  
Vol 4 (36) ◽  
pp. 8422-8428 ◽  
Author(s):  
Jinfeng Zhou ◽  
Lizhi Gai ◽  
John Mack ◽  
Zhikuan Zhou ◽  
Hailin Qiu ◽  
...  
Keyword(s):  
Triplet State ◽  
Photophysical Properties ◽  
Facile Synthesis ◽  
Near Ir ◽  
Nir Absorption ◽  
Rhodium Porphyrins

The facile synthesis of novel orthogonally arranged Rh(iii) porphyrin–aza-BODIPY conjugates is described. The conjugates combine the advantages of the near-IR (NIR) absorption of aza-BODPY dye with the high triplet state of rhodium porphyrins.

Plasmon-assisted interaction of Si with light, for cancer hyperthermia and electromagnetic energy harvest

2020 ◽  
Vol 92 (2) ◽  
pp. 20101
Author(s):  
Behnam Kheyraddini Mousavi ◽  
Morteza Rezaei Talarposhti ◽  
Farshid Karbassian ◽  
Arash Kheyraddini Mousavi
Keyword(s):  
Silicon Nanowires ◽  
Metallic Nanoparticles ◽  
Near Infrared ◽  
Optical Transition ◽  
Electromagnetic Energy ◽  
Energy Harvest ◽  
Absorption Enhancement ◽  
Ir Absorption ◽  
Absorption Mechanism ◽  
Near Ir

Metal-assisted chemical etching (MACE) is applied for fabrication of silicon nanowires (SiNWs). We have shown the effect of amorphous sheath of SiNWs by treating the nanowires with SF6 and the resulting reduction of absorption bandwidth, i.e. making SiNWs semi-transparent in near-infrared (IR). For the first time, by treating the fabricated SiNWs with copper containing HF∕H2O2∕H2O solution, we have generated crystalline nanowires with broader light absorption spectrum, up to λ = 1 μm. Both the absorption and photo-luminescence (PL) of the SiNWs are observed from visible to IR wavelengths. It is found that the SiNWs have PL at visible and near Infrared wavelengths, which may infer presence of mechanisms such as forbidden gap transitions other can involvement of plasmonic resonances. Non-radiative recombination of excitons is one of the reasons behind absorption of SiNWs. Also, on the dielectric metal interface, the absorption mechanism can be due to plasmonic dissipation or plasmon-assisted generation of excitons in the indirect band-gap material. Comparison between nanowires with and without metallic nanoparticles has revealed the effect of nanoparticles on absorption enhancement. The broader near IR absorption, paves the way for applications like hyperthermia of cancer while the optical transition in near IR also facilitates harvesting electromagnetic energy at a broad spectrum from visible to IR.

Near-IR Absorption Spectra for the Buckminsterfullerene Anions: An Experimental and Theoretical Study

1992 ◽  
Author(s):  
Del R. Lawson ◽  
Daniel L. Feldheim ◽  
Colby A. Foss ◽  
Peter K. Dorhoug ◽  
C. M. Elliott
Keyword(s):  
Absorption Spectra ◽  
Theoretical Study ◽  
Ir Absorption ◽  
Near Ir ◽  
Ir Absorption Spectra

On-chip methane sensing by near-IR absorption signatures in a photonic crystal slot waveguide

2011 ◽  
Vol 36 (6) ◽  
pp. 984 ◽  
Author(s):  
Wei-Cheng Lai ◽  
Swapnajit Chakravarty ◽  
Xiaolong Wang ◽  
Cheyun Lin ◽  
Ray T. Chen
Keyword(s):  
Photonic Crystal ◽  
Slot Waveguide ◽  
Ir Absorption ◽  
Near Ir ◽  
On Chip

Synthesis of NIR-emitting O-chelated BODIPYs fused with benzene and acenaphthylene

2014 ◽  
Vol 18 (08n09) ◽  
pp. 752-761 ◽  
Author(s):  
Tetsuo Okujima ◽  
Yoichi Shida ◽  
Keishi Ohara ◽  
Yuya Tomimori ◽  
Motoyoshi Nishioka ◽  
...  
Keyword(s):  
Near Infrared ◽  
Photophysical Properties ◽  
Fluorescence Emission ◽  
Fluorescence Measurement ◽  
Aromatic Rings ◽  
Nir Absorption ◽  
Intense Absorption ◽  
Near Infrared Dye

A series of O-chelated BODIPYs fused with aromatic rings such as benzene and acenaphthylene at β,β-positions was synthesized as a near-infrared dye. The photophysical properties were examined by UV-vis-NIR absorption and fluorescence measurement. Acenaphthylene-fused O-BODIPYs showed a intense absorption at 750–840 nm with the ε of 105 M-1.cm-1. and a fluorescence emission at 770–850 nm with the high Φ value of 0.06–0.43.

scholarly journals Absorption and Emission Spectra for C60 Anions

1994 ◽  
Vol 14 (1-3) ◽  
pp. 155-160 ◽  
Author(s):  
Tatsuhisa Kato
Keyword(s):  
Absorption Spectrum ◽  
Absorption Band ◽  
Theoretical Analysis ◽  
Room Temperature ◽  
Emission Spectra ◽  
Mirror Image ◽  
Ir Absorption ◽  
Near Ir ◽  
Laser Experiments ◽  
Ir Bands

Absorption spectra are detected for C60− and C602− produced electrolytically in solution at room temperature. Theoretical analysis of the spectrum of C60− by CNDO/S calculations gives an interpretation of the characteristic near-IR bands, the weak visible bands, and the strong bands in the UV region. The emission spectrum of C60− is a mirror image of the near-IR absorption band, and the detection of the emission reconfirms our original assignment of the absorption spectrum. The nature of the spectrum of C602− is characterized by a similar orbital picture to that of C60−. Further laser experiments of significance are proposed.

Specific Near-IR Absorption Imaging of Glioblastomas Using Integrin-Targeting Gold Nanorods

2011 ◽  
Vol 21 (6) ◽  
pp. 1082-1088 ◽  
Author(s):  
Jihye Choi ◽  
Jaemoon Yang ◽  
Joseph Park ◽  
Eunjung Kim ◽  
Jin-Suck Suh ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Ir Absorption ◽  
Absorption Imaging ◽  
Near Ir

scholarly journals Triazole-based osmium(ii) complexes displaying red/near-IR luminescence: antimicrobial activity and super-resolution imaging

2020 ◽  
Vol 11 (33) ◽  
pp. 8928-8935
Author(s):  
Kirsty L. Smitten ◽  
Paul A. Scattergood ◽  
Charlotte Kiker ◽  
Jim A. Thomas ◽  
Paul I. P. Elliott
Keyword(s):  
Antimicrobial Activity ◽  
Cellular Uptake ◽  
Super Resolution ◽  
Methicillin Resistant ◽  
Luminescence Imaging ◽  
Near Ir ◽  
Resolution Imaging

Cellular uptake, luminescence imaging and antimicrobial activity of facial and meridional isomers of Os(ii) triazole-based complexes against methicillin-resistant S. aureus, MRSA.

Sign in / Sign up

Export Citation Format

Share Document