Green fabrication of high strength, transparent cellulose-based films with durable fluorescence and UV-blocking performance

Peng, Fang; Liu, Hongchen; Xiao, Dongdong; Guo, Lei; Yue, Fengxia; Würfel, Hendryk; Heinze, Thomas; Hu, Qi

doi:10.1039/d2ta00817c

Cited by 30 publications

(19 citation statements)

References 47 publications

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“…As the mechanism shown in Scheme , CAA is first synthesized through homogeneous esterification of cotton linter in a “green” solvent (ionic liquid), as in our previous work. [ 30 ] Second, CAA film is regenerated from CAA solution by casting and drying. Then CAA film is modified in the presence of urea, acetoacetyl, and vanillin by the Biginelli reaction, leading to the resulting cellulose‐based functional films (CAA‐V).…”

Section: Resultsmentioning

confidence: 99%

“…In our previous work, high strength, transparent cellulose‐based films with durable fluorescence and UV‐blocking performance were developed via multicomponent Hantzsch reaction. [ 30 ] Based on the reactive acetoacetyl group of cellulose acetoacetates (CAA) synthesized, a conjugated structure was introduced into the film, which exhibited good UV resistance. This multicomponent reaction provides an eco‐friendly way to construct novel functional cellulose.…”

Section: Introductionmentioning

confidence: 99%

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Transparent Cellulose‐Based Film with High UV‐Blocking Performance Fabricated by Surface Modification using Biginelli Reaction

Yuan

Liu

Shen

et al. 2022

Macromol. Rapid Commun.

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Efficient and sustainable ultraviolet (UV)-blocking materials are of great interest in many fields. Herein, novel cellulose-based UV-blocking films are developed via surface modification using the Biginelli reaction. The resulting films exhibited excellent visible transparency (80%) at 550 nm and superhigh UV-blocking performance, which can shield almost 100% UVA and UVB. These features are very stable even the materials are being subjected to solvents, UV irradiation, and thermal treatment. This work provides a novel and facile strategy to fabricate functional cellulose-based films with superhigh anti-ultraviolet performance.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transparent Cellulose‐Based Film with High UV‐Blocking Performance Fabricated by Surface Modification using Biginelli Reaction

Yuan

Liu

Shen

et al. 2022

Macromol. Rapid Commun.

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“…Firstly, the cellulose acetoacetate (CAA) was obtained by previous method of the same research group. (Peng et al, 2022;Rong et al, 2019) That was to say, dry coniferous wood pulp (4.0 g) was placed in a three-mouth ask with 76.0 g AMIMCl. Then 50mL DMF were added to the reaction vessel.…”

Section: The Preparation Of Caa Lm and Caa-ca-oda Lmmentioning

confidence: 99%

“…1a, CAA was rstly prepared by transesteri cation with tert-butylacetoacetate (t-BAA) under homogeneous condition according to our previous work. (Peng et al, 2022) The CAA lm was obtained from CAA solution after regeneration in ethanol and drying. It was involved in Hantzsch reaction together with ammonium acetate and CA as a multi-functional group under the room temperature.…”

Section: Fabrication Of Cellulose-based Lmsmentioning

confidence: 99%

“…Previously, we developed a novel method to prepare cellulose-based uorescent lm with good UV-blocking performance based on cellulose acetoacetate (CAA) gel by using Hantzsch reaction. (Peng et al, 2022) Although great advancements on cellulose-based UV-blocking lms have been achieved, the well hydrophilic feature may limit their practical application in elds such as packing and cover materials. In addition, UV transmittance at 400 nm is about 10-25% for these lms, which means they are not 100% UV-blocking.…”

Section: Introductionmentioning

confidence: 99%

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Rational Design of Stable Fluorescent and Hydrophobic Cellulose-based Film for Full-band UV-blocking by Surface Modification

Qiu

Liu

Shen

et al. 2022

Preprint

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A novel fluorescent, hydrophobic cellulose-based UV-blocking film was developed via chemical surface modification. Cellulose acetoacetate (CAA) film was firstly regenerated by acetyl acetylation of cellulose in a homogeneous system. Based on this esterified film with acetoacetyl groups, both 1,4-dihydropyridine (DHP) fluorescent ring and hydrophobic octadecylamine (ODA) were bonded to cellulose chains through Hantzsch reaction and the formation of enamine bond, by using a one-pot process under room temperature. The resulting film exhibited bright fluorescent and excellent UV-blocking properties (shielding almost 100% UV), which are very stable even being exposed to long periods of UV radiation, harsh temperature treatment and different solvents. In addition, this film has good hydrophobic feature (the contact angle reach up to 112°). This work provided a facile and environmentally friendly strategy to fabricate multifunctional cellulose-based film, which had great application potential in the field of UV protection, fluorescent materials, packaging and cover materials for greenhouse.

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Color‐Tunable, Excitation‐Dependent, and Water Stimulus‐Responsive Room‐Temperature Phosphorescence Cellulose for Versatile Applications

et al. 2023

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Smart‐response materials with ultralong room temperature phosphorescence (RTP) are highly desirable, but they have rarely been described, especially those originating from sustainable polymers. Herein, a variety of cellulose derivatives with 1,4 dihydropyridines (DHPs) rings were synthesized through the Hantzsch reaction, giving impressive RTP with a long lifetime of up to 1251 ms. Specifically, the introduction of acetoacetyl groups and DHPs rings promotes the spin‐orbit coupling (SOC) and intersystem crossing (ISC) process, and multiple interactions between cellulose induce clustering and inhibit the nonradiative transitions, boosting long‐live RTP. Furthermore, the resulting transparent and flexible cellulose films also exhibit excitation‐dependent and color‐tunable afterglows by introducing different extended aromatic groups. More interestingly, the RTP performance of these films is sensitive to water and can be repeated in response to wet/dry stimuli. Inspired by these advantages, the RTP cellulose demonstrates advanced applications in information encryption and anti‐counterfeiting. This work not only enriches the photophysical properties of cellulose but also provides a versatile platform for the development of sustainable afterglows.This article is protected by copyright. All rights reserved

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Green fabrication of high strength, transparent cellulose-based films with durable fluorescence and UV-blocking performance

Abstract: Fluorescent cellulose films offer exciting properties and functionalities. However, they are normally prepared by unstable physical absorbed or complicated chemical grafted luminogens under harsh conditions. Herein, an eco-friendly and scalable...

Cited by 30 publications

References 47 publications

Transparent Cellulose‐Based Film with High UV‐Blocking Performance Fabricated by Surface Modification using Biginelli Reaction

Transparent Cellulose‐Based Film with High UV‐Blocking Performance Fabricated by Surface Modification using Biginelli Reaction

Rational Design of Stable Fluorescent and Hydrophobic Cellulose-based Film for Full-band UV-blocking by Surface Modification

Color‐Tunable, Excitation‐Dependent, and Water Stimulus‐Responsive Room‐Temperature Phosphorescence Cellulose for Versatile Applications

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