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Ultraviolet light

About: Ultraviolet light is a research topic. Over the lifetime, 49494 publications have been published within this topic receiving 843151 citations.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the localised surface plasmon resonance (LSPR) effect of noble metal nanoparticles (NPs) was used to improve the performance of semiconductor photocatalysts (for example, TiO2 and Ag halides).

525 citations

Journal ArticleDOI
TL;DR: DNA's of various compositions, labeled with radioactive cytosine or thymine, were irradiated with monochromatic ultraviolet light and analyzed by photochemical and chromatographic techniques for photoproducts to identify pyrimidine dimers, which interfere with nuclease action and inhibit DNA synthesis in vitro.

523 citations

Journal Article
TL;DR: Peripheral blood lymphocytes of patients with Fanconi9s anemia were tested for their susceptibility to chromosome breakage by caffeine, chloramphenicol, actinomycin D, methylmethanesulfonate, nitrogen mustard and mitomycin C, and the specifically increased susceptibility to these compounds is interpreted as an indication that the FA cells are defective in the repair mechanism to tolerate the cross-links produced in their DNA.
Abstract: Summary Peripheral blood lymphocytes of patients with Fanconi9s anemia (FA) were tested for their susceptibility to chromosome breakage by caffeine, chloramphenicol, actinomycin D, methylmethanesulfonate, nitrogen mustard, mitomycin C, decarbamoyl mitomycin C, N -methyl- N′ -nitro- N -nitrosoguanidine, 4-nitroquinoline 1-oxide, 8-methoxypsoralen, and 60 Co γ-ray and ultiviolet irradiations. A definitely abnormal response of the chromosomes of the FA cells was found when they were treated with nitrogen mustard and mitomycin C and after the irradiation with long-wavelength ultraviolet light in the presence of 8-methoxypsoralen. The specifically increased susceptibility to these compounds, which can introduce interstrand cross-links into DNA, is interpreted as an indication that the FA cells are defective in the repair mechanism to tolerate the cross-links produced in their DNA. The impairment of the capacity to tolerate the lesions produced in DNA may be implicated in the increased risk to develop malignant neoplasms in this hereditary disorder.

519 citations

Journal ArticleDOI
TL;DR: In this article, the effects of polyethylene glycol (PEG) addition to the precursor solution on the surface structures and photocatalytic activity of the resultant thin films are studied.

517 citations

Journal ArticleDOI
TL;DR: A novel photoluminescent ink for rewritable media that dichroically emits phosphorescence due to a structural bistability of the self-assembled luminophor is reported, which can provide an important step towards the next-generation security technology for information handling.
Abstract: Security inks have become of increasing importance. They are composed of invisible substances that provide printed images that are not able to be photocopied, and are readable only under special environments. Here we report a novel photoluminescent ink for rewritable media that dichroically emits phosphorescence due to a structural bistability of the self-assembled luminophor. Long-lasting images have been developed by using conventional thermal printers, which are readable only on exposure to ultraviolet light, and more importantly, are thermally erasable for rewriting. Although thermally rewritable printing media have already been developed using visible dyes and cholesteric liquid crystals, security inks that allow rewriting of invisible printed images are unprecedented. We realized this unique feature by the control of kinetic and thermodynamic processes that compete with one another in the self-assembly of the luminophor. This strategy can provide an important step towards the next-generation security technology for information handling.

516 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202346
2022181
20211,101
20201,978
20192,639
20182,772