Preparation of photochromic paper, using fibre-attached spiropyran polymer networks

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 109514-109518 ◽  
Author(s):  
W. Li ◽  
S. Trosien ◽  
H. Schenderlein ◽  
M. Graf ◽  
M. Biesalski
Keyword(s):  
Polymer Networks ◽  
Colour Change ◽  
Functional Polymer ◽  
Uv Sensor ◽  
Covalent Immobilisation

Spiropyran-based photochromic paper was prepared by covalent immobilisation of functional polymer networks. The sensitivity of the UV-induced colour change was dynamically adjusted by a damping method. Thereby, a colourimetric UV sensor was designed.

UV Sensor Based on Photomechanically Functional Polymer-Coated FBG

2010 ◽  
Vol 22 (19) ◽  
pp. 1404-1406 ◽  
Author(s):  
Hyun-Kyoung Kim ◽  
Woojin Shin ◽  
Tae-Jung Ahn
Keyword(s):  
Functional Polymer ◽  
Uv Sensor

scholarly journals Side Polished Fiber Optic UV Sensor Using Evanescent Coupling of Photo-Functional Polymer

2002 ◽  
Vol 11 (6) ◽  
pp. 335-341 ◽  
Author(s):  
Sang-Woo Kim ◽  
Gyoo-Won Seo ◽  
Jong-Kuk Yoon ◽  
Su-Won Jang ◽  
Yun-Sik Yu ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Functional Polymer ◽  
Uv Sensor ◽  
Evanescent Coupling ◽  
Side Polished Fiber

A new colour-change effect

1997 ◽  
Vol 25 (5) ◽  
pp. 325-330 ◽  
Author(s):  
A. Halvorsen ◽  
B.B. Jensen
Keyword(s):  
Colour Change ◽  
Change Effect

Crosslinker Chemistry Determines the Uptake Potential of Perfluorinated Alkyl Substances by β-Cyclodextrin Polymers

2018 ◽  
Author(s):  
Leilei Xiao ◽  
Casey Ching ◽  
Yuhan Ling ◽  
Mohammadreza Nasiri ◽  
Max Justin Klemes ◽  
...  
Keyword(s):  
Binding Affinity ◽  
Polymer Networks ◽  
Cyclodextrin Polymer ◽  
Perfluorinated Alkyl Substances ◽  
Cyclodextrin Polymers

This work describes several crosslinked β-cyclodextrin polymer networks and correlates the crosslinker chemistry with binding affinity for per- and polyfluorinated alkyl substances (PFASs), including PFOA and PFOS.

Design and Synthesis of Two-Dimensional Covalent Organic Frameworks with Four-Arm Cores: Prediction of Remarkable Ambipolar Charge-Transport Properties

2019 ◽  
Author(s):  
Simil Thomas ◽  
Hong Li ◽  
Raghunath R. Dasari ◽  
Austin Evans ◽  
William Dichtel ◽  
...  
Keyword(s):  
Charge Transport ◽  
Organic Semiconductors ◽  
Density Functional ◽  
Polymer Networks ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
X Ray Diffraction ◽  
Zinc Porphyrin ◽  
Design And Synthesis ◽  
Predicted Values

<p>We have considered three two-dimensional (2D) π-conjugated polymer networks (i.e., covalent organic frameworks, COFs) materials based on pyrene, porphyrin, and zinc-porphyrin cores connected <i>via</i> diacetylenic linkers. Their electronic structures, investigated at the density functional theory global-hybrid level, are indicative of valence and conduction bands that have large widths, ranging between 1 and 2 eV. Using a molecular approach to derive the electronic couplings between adjacent core units and the electron-vibration couplings, the three π-conjugated 2D COFs are predicted to have ambipolar charge-transport characteristics with electron and hole mobilities in the range of 65-95 cm<sup>2</sup>V<sup>-1</sup>s<sup>-1</sup>. Such predicted values rank these 2D COFs among the highest-mobility organic semiconductors. In addition, we have synthesized the zinc-porphyrin based 2D COF and carried out structural characterization via powder X-ray diffraction and surface area analysis, which demonstrates the feasability of these electroactive networks.</p>

Sign in / Sign up

Export Citation Format

Share Document