Photochromic materials for holography: issues and constraints

2012 ◽  
Author(s):  
Andrea Bianco ◽  
Chiara Bertarelli ◽  
Rossella Castagna ◽  
Giorgio Pariani ◽  
Alessio Zanutta
Keyword(s):  
Photochromic Materials

Towards grey coloring photochromic materials using vinylidene-naphthofurans

2020 ◽  
Vol 176 ◽  
pp. 108205
Author(s):  
Vânia C. Graça ◽  
Céu M. Sousa ◽  
Paulo Coelho
Keyword(s):  
Photochromic Materials

Achieving of sandwich-like laminated composite materials for robust superhydrophobicity, rapid photochromism and photo-mask writable media

2022 ◽  
Author(s):  
Guofeng Zhang ◽  
Linqi Huang ◽  
Fuchao Yang
Keyword(s):  
Composite Materials ◽  
Laminated Composite ◽  
Switching Rate ◽  
Lotus Leaf ◽  
Water Properties ◽  
Laminated Composite Materials ◽  
Photochromic Materials ◽  
Poor Stability

Photochromic materials with anti-water properties have impressed practical values, but their applications are severely hindered by poor stability and slow colour-switching rate. Inspired by the superhydrophobicity of lotus leaf and...

Enhancing functionalities of organic ultraviolet-visible phototransistors incorporating spiropyran-merocyanine photochromic materials

2021 ◽  
Vol 9 (39) ◽  
pp. 22522-22532
Author(s):  
Ren-Jie Wu ◽  
Yueh-Ling Hsu ◽  
Wei-Yang Chou ◽  
Horng-Long Cheng
Keyword(s):  
Visible Light ◽  
Energy Saving ◽  
Ultraviolet Light ◽  
Photochromic Materials

A photoexcited merocyanine molecule triggers several distinct photoresponse features of organic phototransistors, enabling distinction between ultraviolet light and visible light and realising an energy-saving optical synapse.

Excited-State Intramolecular Proton Transfer in Polymers

1995 ◽  
Vol 413 ◽  
Author(s):  
Richard M. Tarkka ◽  
Samson A. Jenekhe
Keyword(s):  
Excited State ◽  
Proton Transfer ◽  
Main Chain ◽  
Intramolecular Proton Transfer ◽  
Polymer Structure ◽  
Laser Dyes ◽  
Excimer Formation ◽  
Photochromic Materials ◽  
Hydrogen Bonded

ABSTRACTExcited state intramolecular proton transfer (ESIPT) has been demonstrated in new intramoleculary hydrogen bonded (IHB) polymers of interest as photostabilizers, triplet quenchers, photochromic materials, laser dyes and electroluminescent materials. The new IHB polymers containing the 2-(2-hydroxyphenyl)benzoxazole moiety in the main chain were used to explore the effects of polymer structure, extended conjugation and competition with excimer formation on the ESIPT process. It was found that polymer structure, and particularly extent of conjugation, affects an IHB polymer's ability to exhibit ESIPT.

scholarly journals Photocontrolled multiple-state photochromic benzo[b]phosphole thieno[3,2-b]phosphole-containing alkynylgold(I) complex via selective light irradiation

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Nathan Man-Wai Wu ◽  
Maggie Ng ◽  
Vivian Wing-Wah Yam
Keyword(s):  
Excited States ◽  
Smart Materials ◽  
Storage Capacity ◽  
Optical Memory ◽  
Color Changes ◽  
Intramolecular Quenching ◽  
Environmental Friendly ◽  
Multiple State ◽  
Complex Features ◽  
Photochromic Materials

AbstractPhotochromic materials have drawn growing attention because using light as a stimulus has been regarded as a convenient and environmental-friendly way to control properties of smart materials. While photoresponsive systems that are capable of showing multiple-state photochromism are attractive, the development of materials with such capabilities has remained a challenging task. Here we show that a benzo[b]phosphole thieno[3,2‑b]phosphole-containing alkynylgold(I) complex features multiple photoinduced color changes, in which the gold(I) metal center plays an important role in separating two photoactive units that leads to the suppression of intramolecular quenching processes of the excited states. More importantly, the exclusive photochemical reactivity of the thieno[3,2‑b]phosphole moiety of the gold(I) complex can be initiated upon photoirradiation of visible light. Stepwise photochromism of the gold(I) complex has been made possible, offering an effective strategy for the construction of multiple-state photochromic materials with multiple photocontrolled states to enhance the storage capacity of potential optical memory devices.

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