Large Photoinduced Refractive Index Change of Polymer Films Containing and Bearing Norbornadiene Groups and Its Application to Submicron-Scale Refractive-Index Patterning.

2001 ◽  
Vol 33 (11) ◽  
pp. 868-873 ◽  
Author(s):  
Yuichi Kato ◽  
Hirokazu Muta ◽  
Satoshi Takahashi ◽  
Kazuyuki Horie ◽  
Takabumi Nagai
Keyword(s):  
Refractive Index ◽  
Polymer Films ◽  
Refractive Index Change ◽  
Index Change ◽  
Submicron Scale

Preparation of Diarylethene Substituted Polymer Films for Optical Recording

2001 ◽  
Vol 665 ◽  
Author(s):  
Song Yun Cho ◽  
Eunkyoung Kim
Keyword(s):  
Refractive Index ◽  
Visible Light ◽  
Polymer Films ◽  
Color Change ◽  
Refractive Index Change ◽  
Optical Recording ◽  
Acryloyl Chloride ◽  
Transparent Film ◽  
Index Change ◽  
Recorded Image

ABSTRACTEffect of photo-irradiation on the color change of diarylethene polymer films was investigated. Diarylethene polymer films were prepared from photopolymerization of a radical curable mixture of diarylethene compound and a fluoroalkylacrylate containing a photo initiator. 1-[6'-(Methacryloxyethyloxycarbonyl)-2'-methylbenzo[b]thiophene-3'-yl]-2- (2"-methylbenzo[b]thiophene-3"-yl)hexafluorocyclopentene (MMBTF6) was synthesized from 2,3-bis(2-methylbenzo[b]thiophene-3-yl)hexafluorocyclopentene (BTF6) in three steps. 2,2,3,3-Tetrafluoro-1,4-butyldiacrylate (TFBDA) was synthesized from the corresponding diol and acryloyl chloride in the presence of a base. The photocurable mixture was coated on a substrate and subjected to antinic irradiation, to afforded homogeneous transparent film. A mask image was recovered on the film by a light of 365 nm and read by a visible light (λ > 700 nm) without destruction of the image. To erase the recorded image, a white light or a visible light was irradiated. Photochromic quantum yield and photo-induced refractive index change of the diarylethene bound polymer film were determined as 0.12 and 0.0006 respectively.

scholarly journals Refractive Index Change and Color Imaging of Acid-Chromic Polymer Films Using EB-Induced Acid Generation

2006 ◽  
Vol 19 (1) ◽  
pp. 105-110 ◽  
Author(s):  
Jun Kato ◽  
Kanako Yuasa ◽  
Harumi Matsushita ◽  
Yasunari Maekawa ◽  
Kazuyuki Enomoto ◽  
...  
Keyword(s):  
Refractive Index ◽  
Polymer Films ◽  
Refractive Index Change ◽  
Color Imaging ◽  
Index Change ◽  
Acid Generation

scholarly journals Critical angle reflection imaging for quantification of molecular interactions on glass surface

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Guangzhong Ma ◽  
Runli Liang ◽  
Zijian Wan ◽  
Shaopeng Wang
Keyword(s):  
Refractive Index ◽  
Small Molecule ◽  
Molecular Interactions ◽  
Glass Surface ◽  
Critical Angle ◽  
Dynamic Range ◽  
Refractive Index Change ◽  
Label Free ◽  
Index Change ◽  
Sensing Range

AbstractQuantification of molecular interactions on a surface is typically achieved via label-free techniques such as surface plasmon resonance (SPR). The sensitivity of SPR originates from the characteristic that the SPR angle is sensitive to the surface refractive index change. Analogously, in another interfacial optical phenomenon, total internal reflection, the critical angle is also refractive index dependent. Therefore, surface refractive index change can also be quantified by measuring the reflectivity near the critical angle. Based on this concept, we develop a method called critical angle reflection (CAR) imaging to quantify molecular interactions on glass surface. CAR imaging can be performed on SPR imaging setups. Through a side-by-side comparison, we show that CAR is capable of most molecular interaction measurements that SPR performs, including proteins, nucleic acids and cell-based detections. In addition, we show that CAR can detect small molecule bindings and intracellular signals beyond SPR sensing range. CAR exhibits several distinct characteristics, including tunable sensitivity and dynamic range, deeper vertical sensing range, fluorescence compatibility, broader wavelength and polarization of light selection, and glass surface chemistry. We anticipate CAR can expand SPR′s capability in small molecule detection, whole cell-based detection, simultaneous fluorescence imaging, and broader conjugation chemistry.

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