A high-performance visible laser rewritable black paper

Du, Zhaohui; Liu, Junning; Gai, Hanqi; Sheng, Lan; Zhang, Sean Xiao‐An

doi:10.1039/d0tc02241a

Cited by 11 publications

(5 citation statements)

References 45 publications

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“…There are several classes of leuco dyes, with spiro[isobenzofuran- 1,9-xanthen]-3-one (also known as fluoran dyes) being one of the most popular, due to the versatility of their molecular structure modifications as well as the variety of applications, e.g. in thermo-printing, − textile, − biological applications, − etc.…”

Section: Introductionmentioning

confidence: 99%

Design and Synthesis of Red-Absorbing Fluoran Leuco Dyes Supported by Computational Screening

Fonseca Deichmann,

Chercka,

Danner

et al. 2024

ACS Omega

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We report here on the design and synthesis of red-absorbing fluoran leuco dyes (LD). An essential part of the present dye development process is a computational screening of the candidate molecules, which allows for both time-efficient and accurate in silico characterization of the dyes. We focus our study here on the robust benzo[a]fluoran scaffold frequently used in leuco dyes. For the computational screening of LD candidates, an automated DFT-based simulation protocol has been developed and applied. The protocol consists of a combinatorial generation of the molecular structures of possible LD candidates, followed by simulations of their optimized molecular geometries, with their UV−Vis spectra as the main figure of merit. In the present application of the simulation protocol, more than 1600 structures of possible LD candidates have been evaluated. Finally, two structures, LD01 and LD02, have been chosen from the list of the best computed LD candidates to be synthesized and characterized. Our study demonstrates how the synergy between experiment and simulation can facilitate the design of novel leuco dyes.

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Section: Introductionmentioning

confidence: 99%

Design and Synthesis of Red-Absorbing Fluoran Leuco Dyes Supported by Computational Screening

Fonseca Deichmann,

Chercka,

Danner

et al. 2024

ACS Omega

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“…Over the past decades, laser direct writing (LDW) has been an emerging field in laser processing methods of materials. In general, LDW refers to producing various patterns (such as trademarks, security codes, images, and texts) on the surface of metals, ceramics, woods, polymers, and other materials via physical and chemical changes caused by lasers. − Recently, LDW of polymers has received considerable attention. Compared with traditional marking or patterning methods (such as mechanical engraving, spraying, ink printing, and screen printing), , LDW possesses many advantages of being non-contact, highly efficient, highly precise, durable, and environmentally friendly …”

Section: Introductionmentioning

confidence: 99%

Pitaya-Structured Microspheres with Dual Laser Wavelength Responses for Polymer Laser Direct Writing

Feng

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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A unique pitaya-structured graphene/TiO 2 @PS microsphere with dual laser wavelength responses is designed and prepared via a facile approach of polymer melt blending. The graphene/TiO 2 particles ("pitaya seeds") are homogeneously distributed in the polystyrene ("pitaya pulp") of the microspheres with an average size of 1.5 μm. The graphene in microspheres serves not only as a laser absorber that has responses to both 355 nm UV and 1064 nm NIR lasers but also as a reducing agent of TiO 2 during laser direct writing (LDW). As expected, benefiting from the unique pitaya-structured structure, the graphene/ TiO 2 @PS microsphere can remarkably improve the performance of both NIR and UV LDW of polymers. The results of characterizations reveal that the black color caused by NIR LDW is due to the generation of the amorphous carbon and the color change after UV LDW is owing to the formation of black sp/sp 2 carbon compounds. Meanwhile, some TiO 2 in microspheres is reduced into the black/ gray titanium oxides of Ti 2+ and Ti 3+ after NIR and UV LDW, respectively. The above co-contribution endows the graphene/TiO 2 @PS microspheres with an outstanding color-changing ability. This pitayastructured microsphere will have a profound effect on polymers' laser direct writing.

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“…In addition, the photoinduced proton transfer in an indolium derivative of photoacid to azobenzenes/phenolsulfonphthalein dye has been explored for applications in light-responsive rewritable papers. 16 Okada et al 17 analyzed mechanochromism or vapochromism that demonstrated proton-induced chromism between twisted and folded conformers of ( N -phenylfluorenylidene)acridane. Hazra and co-workers 18 carried out ruthenium-catalyzed one-pot synthesis of iso-indolinone employing a charge transfer luminophore.…”

Section: Introductionmentioning

confidence: 99%

Design and synthesis of piezochromic materials exploring intermolecular charge transfer: chalconoids bound to thep-sulfonatocalix[6]arene macrocycle

Patil

Gejji

Malkhede

2022

Phys. Chem. Chem. Phys.

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A high-performance visible laser rewritable black paper

Abstract: An automatically printable, classic, and frequently usable high-performance black visible-light-responsive paper has been fabricated.

Cited by 11 publications

References 45 publications

Design and Synthesis of Red-Absorbing Fluoran Leuco Dyes Supported by Computational Screening

Design and Synthesis of Red-Absorbing Fluoran Leuco Dyes Supported by Computational Screening

Pitaya-Structured Microspheres with Dual Laser Wavelength Responses for Polymer Laser Direct Writing

Design and synthesis of piezochromic materials exploring intermolecular charge transfer: chalconoids bound to thep-sulfonatocalix[6]arene macrocycle

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