&lt;title&gt;Available lifetime of methylene-blue-sensitized dichromated gelatin&lt;/title&gt;

Zeng, Hongjun; Guo, Lurong; Tang, Jiyue; Zhu, Jianguo

doi:10.1117/12.263123

Cited by 1 publication

(3 citation statements)

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“…Besides g-C 3 N 4 nanosheets, nowadays tetramethylethylenediamine (TEMED) has been also reported as a sacrificial electron donor . Due to having two alkyl groups and a nitrogen atom in TEMED, the alkyl groups have an electron donating inductive effect on the nitrogen atom.…”

Section: Introductionmentioning

confidence: 99%

“…Due to having two alkyl groups and a nitrogen atom in TEMED, the alkyl groups have an electron donating inductive effect on the nitrogen atom. Based on this property, MB can be quickly oxidized in a TEMEDA solution into colorless Leuco MB (LMB) after exposure to UV radiation. − Correspondingly, the solution becomes colorless and transparent. Further prolonging the exposure time to the UV radiation and oxygen in ambient conditions will cause MB to be fully decomposed .…”

Section: Introductionmentioning

confidence: 99%

“…Besides g-C 3 N 4 nanosheets, nowadays tetramethylethylenediamine (TEMED) has been also reported as a sacrificial electron donor. 29 Due to having two alkyl groups and a nitrogen atom in TEMED, the alkyl groups have an electron donating inductive effect on the nitrogen atom. Based on this property, MB can be quickly oxidized in a TEMEDA solution into colorless Leuco MB (LMB) after exposure to UV radiation.…”

Section: ■ Introductionmentioning

confidence: 99%

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Ionic Hydrogels Based Wearable Sensors to Monitor the Solar Radiation Dose for Vitamin D Production and Sunburn Prevention

Shen²,

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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Wearable solar radiation sensors based on ionic hydrogels are facilely prepared to simultaneously monitor the radiation dose for the production of vitamin D and the prevention of sunburn. Tetramethylethylenediamine (TEMED) is neutralized with acrylic acid (AA) to obtain tetramethylethylenediamine acrylate (TEMEDA), which is further polymerized with acrylamide by a free radical reaction. By simply adding MB or NR during the polymerization, the final obtained ionic hydrogels can indicate solar radiation. Due to the extent of discoloration, the discoloration speed of MB and NR is correlated to the radiation dose. This wearable sensor can indicate the solar radiation dose required by the human body to synthesize vitamin D through the discoloration of the ionized hydrogel of MB, whereas those with NR are able to illustrate the threshold of radiation dose that causes potential skin hurt. Therefore, the benefit and drawback of solar radiation can be well balanced by optimizing the exposure time to solar irradiation. In addition, polyurethane cross-linked with a thermoresponsive coating is used as band for this wearable sensor. Due to the hydrophilicity below its transition temperature, the cross-linked band possesses the easy cleaning capability of stains after the daily wear. Such type of wearable sensor can be broadly used for monitoring the solar radiation, especially in outdoor activities.

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Section: Introductionmentioning

confidence: 99%