The relative populations of two amino-hydroxy conformers of cytosine, differing in rotation of the OH group by approximately 180 degrees , were selectively and repeatedly manipulated with narrowband, near-infrared laser light. For cytosine monomers isolated in a low-temperature Ar matrix, laser irradiations at 7013 cm(-1) and at 7034 cm(-1) were found to induce effective transformations of the ...

Substantial refractive index changes in clinical grade poly(methyl methacrylate) (PMMA) with both femtosecond NIR (800 nm) and NUV (387 nm) laser pulses are demonstrated, enabling volume gratings and waveguides in bulk PMMA. In the NIR, temporal pulse duration is shown to be critical, with modification efficiency increasing rapidly as pulse duration decreases below 200 fs. On the other hand, in...

The light-triggered controlled release of anticancer drugs accompanied with NIR-responsive photodynamic therapy was prepared via a self-assembly process. Firstly, Mn(2+)-doped upconversion nanoparticles (UCNPs) were coated with a mesoporous silica shell and modified with photosensitizer (Chlorin e6) and long alkyl chains. And then the NIR light-responsive amphiphilic copolymer containing 9,10-d...

Although single-photon fluorescence lifetime imaging microscopy (FLIM) is widely used to image molecular processes using a wide range of excitation wavelengths, the captured emission of this technique is confined to the visible spectrum. Here, we explore the feasibility of utilizing near-infrared (NIR) fluorescent molecular probes with emission >700 nm for FLIM of live cells. The confocal micro...

Intractable diplopia occurs in approximately 0.8% of patients following strabis-mus surgery, with considerable detriment to visual quality of life. Long-term therapeutic occlusion is required to permit functional vision. Black intraocular lens (IOL) implantation is an effective therapeutic option associated with high rates of postoperative satisfaction. 1 Black IOL implantation entails a cost t...

OBJECTIVE To investigate in a large sample of consecutive patients with neurofibromatosis type 1 (NF1) the possibility of including the presence of choroidal abnormalities detected by near-infrared reflectance (NIR) as a new diagnostic criterion for NF1. DESIGN Cross-sectional evaluation of a diagnostic test. PARTICIPANTS AND CONTROLS Ninety-five consecutive adult and pediatric patients (19...

Perovskite-Cu(In,Ga)Se2 (CIGS) thin-film tandem technology provides an exciting prospect to achieve low-cost high-efficiency photovoltaic devices by high throughput roll-to-roll processing on flexible substrates. However, no report perovskite-CIGS mini-modules has been published due scribing-related challenges in realizing near-infrared (NIR)-transparent perovskite Herein, NIR-transparent mini-...

Einwandige Kohlenstoffnanoröhren (single-walled carbon nanotubes, SWCNTs) sind vielseitig einsetzbare Bausteine für Biosensoren, die im nahen Infrarot (NIR) fluoreszieren. Ihre Oberfläche kann chemisch so modifiziert werden, dass sie auf Analyten mit einer Veränderung ihrer Fluoreszenz reagieren. Intensitätsbasierte Signale werden jedoch leicht durch äußere Faktoren wie Bewegungen der Probe bee...

Multifunctional theranostic platforms capable of concurrent near-infrared (NIR) fluorescence imaging and phototherapies are strongly desired for cancer diagnosis and treatment. However, the integration of separate imaging and therapeutic components into nanocarriers results in complex theranostic systems with limited translational potential. A single agent-based theranostic nanoplatform, theref...