| Citation: | Daoming Wang, Xuyang Zou, Xusheng Wang, Guangfu Liao, Kejin Jiang, Shanshan Dong, Han Xu, Jianhua Xiong, Peng Li, Zhenming Chen, Junheng Pan, Hengchong Shi, Qingshan Duan, Shuangfei Wang, Hui Zhao. Decoupling optical and mechanical trade-offs in photonic hydrogels via bioinspired multi-network architecture[J]. Journal of Bioresources and Bioproducts, 2026, 11(3): 100265. doi: 10.1016/j.jobab.2026.100265 |
The mechanochromic photonic hydrogels based on cellulose nanocrystals (CNCs) face a contradiction between vividness of structural color and mechanical robustness. Inspired by octopus iridophores, a multi-network synergistic strategy was designed to overcome this challenge. A CNC/polyacrylamide/waterborne polyurethane (CPW) composite hydrogel was fabricated through co-assembly, precursor permeation, and thermal polymerization. This approach embedded a glucose-modified CNC (gCNC) chiral template within an interpenetrating elastic matrix, forming a triple network architecture. Dynamic hydrogen bonding endowed remarkable mechanical properties (420 kPa tensile strength, 821% elongation) while preserving structural order. Consequently, the hydrogel achieved reversible color switching from near-infrared to the full visible spectrum upon stretching, with a reflection peak varying from 467 to 670 nm. This work demonstrated its application in customizable information encryption, where encoded patterns are accurately revealed under specific strain with good cyclic durability. It not only provides a special biomimetic paradigm for designing intelligent responsive materials but also marks a key step toward the practical application of bio-based photonic materials in advanced and extreme environments.
| [1] |
Babaei-Ghazvini, A., Acharya, B., 2023. Mechanical responsive visible structural colors based on chiral-nematic cellulose nanocrystals photonic hydrogels. Chem. Eng. J. 476, 146585.
|
| [2] |
Ballu, K., Lim, J.H., Parton, T.G., Parker, R.M., Frka-Petesic, B., Lapkin, A.A., Ogawa, Y., Vignolini, S., 2025. Tailoring the morphology of cellulose nanocrystals via controlled aggregation. ACS Nano 19, 25228-25242.
|
| [3] |
Bogdanov, G., Strzelecka, A.A., Kaimal, N., Senft, S.L., Lee, S., Hanlon, R.T., Gorodetsky, A.A., 2025. Gradient refractive indices enable squid structural color and inspire multispectral materials. Science 388, 1389-1395.
|
| [4] |
Boott, C.E., Soto, M.A., Hamad, W.Y., MacLachlan, M.J., 2021. Shape-memory photonic thermoplastics from cellulose nanocrystals. Adv. Funct. Mater. 31, 2103268.
|
| [5] |
Boott, C.E., Tran, A., Hamad, W.Y., MacLachlan, M.J., 2020. Cellulose nanocrystal elastomers with reversible visible color. Angew. Chem. Int. Ed. 59, 226-231.
|
| [6] |
Chen, G.J., Hong, W., 2020. Mechanochromism of structural-colored materials. Adv. Opt. Mater. 8, 2000984.
|
| [7] |
Chen, L., Yu, L., Qi, L.H., Eichhorn, S.J., Isogai, A., Lizundia, E., Zhu, J.Y., Chen, C.J., 2025. Cellulose nanocomposites by supramolecular chemistry engineering. Nat. Rev. Mater. 10, 728-749.
|
| [8] |
Chen, Y.H., Liu, Y., Valenzuela, C., Feng, Y.F., Yang, Y.Z., Bi, R., Feng, W., Wang, L., 2026. Universal water transfer printing enables scalable structural coloration of responsive textile fibers for wearable electronics. Adv. Mater. 38, e16769.
|
| [9] |
Chu, G., 2024. Controlled self-assembly of cellulose nanocrystal as custom-tailored photonics and complex soft matter. Acc. Mater. Res. 5, 1388-1400.
|
| [10] |
Eliason, C.M., Nicolaï, M.P.J., Bom, C., Blom, E., D’Alba, L., Shawkey, M.D., 2024. Transitions between colour mechanisms affect speciation dynamics and range distributions of birds. Nat. Ecol. Evol. 8, 1723-1734.
|
| [11] |
Engelen, S., Dolinski, N.D., Chen, C.Q., Ghimire, E., Lindberg, C.A., Crolais, A.E., Nitta, N., Winne, J.M., Rowan, S.J., Du Prez, F.E., 2024. Vinylogous urea: urethane vitrimers: accelerating and inhibiting network dynamics through hydrogen bonding. Angew. Chem. Int. Ed. 63, e202318412.
|
| [12] |
Fang, Y.H., Liang, C., Liljeström, V., Lv, Z.P., Ikkala, O., Zhang, H., 2024. Toughening hydrogels with fibrillar connected double networks. Adv. Mater. 36, 2402282.
|
| [13] |
Frka-Petesic, B., Parton, T.G., Honorato-Rios, C., Narkevicius, A., Ballu, K., Shen, Q.C., Lu, Z.H., Ogawa, Y., Haataja, J.S., Droguet, B.E., Parker, R.M., Vignolini, S., 2023. Structural color from cellulose nanocrystals or chitin nanocrystals: self-assembly, optics, and applications. Chem. Rev. 123, 12595-12756.
|
| [14] |
Ge, W.N., Zhang, F.S., Wang, D.D., Wei, Q.M., Li, Q.Y., Feng, Z.X., Feng, S.L., Xue, X.Y., Qing, G.Y., Liu, Y.H., 2022. Highly tough, stretchable, and solvent-resistant cellulose nanocrystal photonic films for mechanochromism and actuator properties. Small 18, 2107105.
|
| [15] |
Ghosh, S.K., Matino, F., Favrin, F.L., Tonazzini, I., D’Orsi, R., de la Ossa, J.G., Camposeo, A., Li, J., Liu, W.J., Hacker, T.A., Pisignano, D., Operamolla, A., Wang, X.D., Persano, L., 2025. Fully biodegradable hierarchically designed high-performance nanocellulose piezo-arrays. Sci. Adv. 11, eads0778.
|
| [16] |
Goodby, J.W., 1991. Chirality in liquid crystals. Journal of Materials Chemistry 1, 307-318.
|
| [17] |
Huang, L.Q., Huang, H.X., Yu, N., Chen, C.Z., Liu, Y., Hu, G.H., Du, J., Zhao, H., 2025. High-strength and excellent self-healing polyurethane elastomer based on rigid chain segment reinforcement. Macromolecules 58, 1425-1434.
|
| [18] |
Huang, S.T., Zou, S., Wang, Y.X., 2023. Construction of compostable packaging with antibacterial property and improved performance using sprayed coatings of modified cellulose nanocrystals. Carbohydr. Polym. 305, 120539.
|
| [19] |
Jia, Z.A., Fernandes, M.C., Deng, Z.F., Yang, T., Zhang, Q.T., Lethbridge, A., Yin, J., Lee, J.H., Han, L., Weaver, J.C., Bertoldi, K., Aizenberg, J., Kolle, M., Vukusic, P., Li, L., 2021. Microstructural design for mechanical-optical multifunctionality in the exoskeleton of the flower beetle Torynorrhina flammea. Proc. Natl. Acad. Sci. U. S. A. 118, e2101017118.
|
| [20] |
King, D.R., Okumura, T., Takahashi, R., Kurokawa, T., Gong, J.P., 2019. Macroscale double networks: design criteria for optimizing strength and toughness. ACS Appl. Mater. Interfaces 11, 35343-35353.
|
| [21] |
Kinoshita, S., Yoshioka, S., Miyazaki, J., 2008. Physics of structural colors. Rep. Prog. Phys. 71, 076401.
|
| [22] |
Klemm, D., Kramer, F., Moritz, S., Lindström, T., Ankerfors, M., Gray, D., Dorris, A., 2011. Nanocelluloses: a new family of nature-based materials. Angew. Chem. Int. Ed. 50, 5438-5466.
|
| [23] |
Kose, O., Tran, A., Lewis, L., Hamad, W.Y., MacLachlan, M.J., 2019. Unwinding a spiral of cellulose nanocrystals for stimuli-responsive stretchable optics. Nat. Commun. 10, 510.
|
| [24] |
Li, B.G., Zhang, Y.D., Wu, C., Guo, B., Luo, Z.Y., 2018. Fabrication of mechanically tough and self-recoverable nanocomposite hydrogels from polyacrylamide grafted cellulose nanocrystal and poly(acrylic acid). Carbohydr. Polym. 198, 1-8.
|
| [25] |
Li, B.Q., Xu, M.C., An, B., Sun, W.Y., Teng, R., Luo, S., Ma, C.H., Chen, Z.J., Li, J., Li, W., Liu, S.X., 2025a. Mechanical and thermal responsive chiral photonic cellulose hydrogels for dynamic anti-counterfeiting and optical skin. Mater. Horiz. 12, 2669-2678.
|
| [26] |
Li, Q.Y., He, C.C., Qian, Y., Wang, H., Wang, C.L., Wang, X.X., Zhang, F.S., Qing, G.Y., 2025b. Highly robust cellulose photonic hydrogels with reconfigurability and mechanochromism. Mater. Today 83, 252-262.
|
| [27] |
Li, X., Yang, Y.Z., Valenzuela, C., Zhang, X., Xue, P., Liu, Y., Liu, C.J., Wang, L., 2023a. Mechanochromic and conductive chiral nematic nanostructured film for bioinspired ionic skins. ACS Nano 17, 12829-12841.
|
| [28] |
Li, X.J., Zhao, Y.Y., Tan, Q.W., Han, Z.H., Tang, B., Wang, Y.Z., Song, F., 2025c. Corn straw cellulose nanocrystals: preparation, structural coloration, and high-level anti-counterfeiting. Ind. Crops Prod. 224, 120393.
|
| [29] |
Li, X.K., Liu, J.Z., Li, D.D., Huang, S.Q., Huang, K., Zhang, X.X., 2021. Bioinspired multi-stimuli responsive actuators with synergistic color- and morphing-change abilities. Adv. Sci. 8, 2101295.
|
| [30] |
Li, X.K., Liu, J.Z., Zhang, X.X., 2023b. Pressure/temperature dual-responsive cellulose nanocrystal hydrogels for on-demand schemochrome patterning. Adv. Funct. Mater. 33, 2306208.
|
| [31] |
Liu, H., Wang, Z.H., Xin, H.W., Liu, J., Wang, Q.Q., Pang, B., Zhang, K., 2024. Polysaccharide nanocrystals-based chiral nematic structures: from self-assembly mechanisms, regulation, to applications. ACS Nano 18, 22675-22708.
|
| [32] |
Lloyd, V.J., Burg, S.L., Harizanova, J., Garcia, E., Hill, O., Enciso-Romero, J., Cooper, R.L., Flenner, S., Longo, E., Greving, I., Nadeau, N.J., Parnell, A.J., 2024. The actin cytoskeleton plays multiple roles in structural colour formation in butterfly wing scales. Nat. Commun. 15, 4073.
|
| [33] |
Lu, D., Fang, Z., Qiao, Z.H., 2025. Mechanochromic and conductive gels based on cellulose nanocrystals for bioinspired sensing. Nano Lett. 25, 2850-2857.
|
| [34] |
Nasseri, R., Bouzari, N., Huang, J.T., Golzar, H., Jankhani, S., Tang, X.W., Mekonnen, T.H., Aghakhani, A., Shahsavan, H., 2023. Programmable nanocomposites of cellulose nanocrystals and zwitterionic hydrogels for soft robotics. Nat. Commun. 14, 6108.
|
| [35] |
Peng, Y.Y., liang, Y., Yu, S.F., Wei, X.Y., Chen, S.Y., Niu, X.T., Li, W., Chu, G., 2025. All-bio-based flexible chiral nematic cellulose nanocrystal films. Biomacromolecules 26, 7621-7631.
|
| [36] |
Qian, N.N., Hu, J., Huang, S., Liu, Z.Y., Wang, M., Keller, P., Yang, H., 2024. Patterned photonic actuators with dynamic shape-morphing and color-changing capabilities fabricated by athermal embossing technology. Angew. Chem. Int. Ed. 63, e202406534.
|
| [37] |
Qian, Y., Wang, H., Qu, Z., Li, Q.Y., Wang, D.D., Yang, X.D., Qin, H.J., Wei, H.J., Zhang, F.S., Qing, G.Y., 2025. Synergistic color-changing and conductive photonic cellulose nanocrystal patches for sweat sensing with biodegradability and biocompatibility. Mater. Horiz. 12, 499-511.
|
| [38] |
Risteen, B., Delepierre, G., Srinivasarao, M., Weder, C., Russo, P., Reichmanis, E., Zoppe, J., 2018. Thermally switchable liquid crystals based on cellulose nanocrystals with patchy polymer grafts. Small 14, 1802060.
|
| [39] |
Shang, Y.Y., Huang, C., Li, Z., Du, X.M., 2025. Bioinspired ultra-stretchable and highly sensitive structural color electronic skins. Adv. Funct. Mater. 35, 2412703.
|
| [40] |
Shang, Z., An, X.Y., Seta, F.T., Ma, M.S., Shen, M.X., Dai, L., Liu, H.B., Ni, Y.H., 2019. Improving dispersion stability of hydrochloric acid hydrolyzed cellulose nano-crystals. Carbohydr. Polym. 222, 115037.
|
| [41] |
Shen, Y.H., Wang, C.X., Liu, Z.K., Zhang, X.L., Su, R.X., Wang, Y.F., Qi, W., 2023. Multicomponent structural color membrane based on soft lithography array for high-sensitive Raman detection. J. Colloid Interface Sci. 652, 518-528.
|
| [42] |
Shin, S., Kwak, H., Shin, D., Hyun, J., 2019. Solid matrix-assisted printing for three-dimensional structuring of a viscoelastic medium surface. Nat. Commun. 10, 4650.
|
| [43] |
Tao, J.W., Zou, C., Jiang, H.J., Li, M., Lu, D., Mann, S., Xu, Y., 2021. Optically ambidextrous reflection and luminescence in self-organized left-handed chiral nematic cellulose nanocrystal films. CCS Chem. 3, 932-945.
|
| [44] |
Teyssier, J., Saenko, S.V., van der Marel, D., Milinkovitch, M.C., 2015. Photonic crystals cause active colour change in chameleons. Nat. Commun. 6, 6368.
|
| [45] |
Thompson, G.B., Lee, J., Kamani, K.M., Flores-Velasco, N., Rogers, S.A., Harley, B.A.C., 2025. Granular hydrogels as brittle yield stress fluids. Adv. Mater. 37, 2503635.
|
| [46] |
Uddin, M.A., Gámez-Valenzuela, S., Ruiz Delgado, M.C., Gómez-Lor, B., 2025. Stimuli responsive behavior in a D-A-D organic fluorophore: the role of cold crystallization. J. Mater. Chem. C 13, 11052-11059.
|
| [47] |
Wang, Q., Liu, X.Q., Qiang, Z., Hu, Z.D., Cui, X., Wei, H.X., Hu, J.J., Xia, Y.M., Huang, S.H., Zhang, J.M., Fu, K.K., Chen, Y.W., 2022. Cellulose nanocrystal enhanced, high dielectric 3D printing composite resin for energy applications. Compos. Sci. Technol. 227, 109601.
|
| [48] |
Wang, T., Wang, Y.F., Ji, C.Y., Li, Y.F., Yang, H., 2024. All-cellulose-based flexible photonic films. Adv. Funct. Mater. 34, 2408464.
|
| [49] |
Wen, X.X., Yue, Y.F., Wang, C.X., Zhang, J.X., Xie, Y.C., Ning, Y.Y., Li, J.N., Lu, X.G., Yang, S., 2024. Bio-inspired cellulose composites with multicolor separation via electro-thermal and magneto-thermal techniques for multifunctional applications. Adv. Funct. Mater. 34, 2408792.
|
| [50] |
Wu, B.Q., Tang, R.Z., Tan, Y., 2025. Synthetic molecular cage receptors for carbohydrate recognition. Nat. Rev. Chem. 9, 10-27.
|
| [51] |
Xu, H., Xue, R., Zhang, M., Wang, X.S., Hu, G.H., Du, J., Zhang, S.M., Liao, G.F., Zhao, H., 2025. Bioinspired photonic polyurethane: uniting self-healing and flexibility for multiple sensing. Sci. China Mater. 68, 4546-4554.
|
| [52] |
Xue, R., Zhao, H., An, Z.W., Wu, W., Jiang, Y., Li, P., Huang, C.X., Shi, D.A., Li, R.K.Y., Hu, G.H., Wang, S.F., 2023. Self-healable, solvent response cellulose nanocrystal/waterborne polyurethane nanocomposites with encryption capability. ACS Nano 17, 5653-5662.
|
| [53] |
Yan, N.S., Zhu, X.Z., Tian, L., Han, J.B., Zang, J.J., Zhang, H.T., 2025. Self-healing waterborne polyurethane nanocomposites with high strength and toughness based on ureidopyrimidinone-modified cellulose nanocrystals. Carbohydr. Polym. 365, 123806.
|
| [54] |
Yang, X., Sim, J., Huang, W.B., Zhao, R.R., 2025. Bioinspired synergistic texture and color modulation enabled by surface instability of cholesteric liquid crystal elastomer bilayers. Sci. Adv. 11, eaea9183.
|
| [55] |
Yao, Y., Xiao, M., Liu, W.G., 2022. Turning things around: from cationic/anionic complexation-induced nanoemulsion instability to toughened water-resistant waterborne polyurethanes. J. Mater. Chem. A 10, 18408-18421.
|
| [56] |
Yuan, B.H., Qin, J., He, L.X., Zhang, Z.W., Feng, Y., Lv, L.Z., Wang, X., Zou, C., Yu, M.N., Chen, Y.W., Gao, Y.Z., Yang, H., 2025a. Tunable and responsive circularly polarized luminescence of self-organized cellulose nanocrystal chiral superstructures loaded with AIE luminogen. Adv. Funct. Mater. 35, 2424601.
|
| [57] |
Yuan, C.L., Liu, H.X., Zhan, Y.X., Liu, X., Tang, Y.Q., Hu, H.L., Zheng, Z.G., Li, Q., 2025b. Electro-thermo cooperative responsiveness of cholesteric heliconical photonics architectures featuring adaptative sensitivity. Adv. Mater. 37, 2507000.
|
| [58] |
Zhang, D., Fu, B.Y., He, W.L., Li, H.T., Liu, F.Y., Wang, L.H., Liu, H.Z., Zhou, L.J., Cai, W.Z., 2024. Pressure-induced shape and color changes and mechanical-stimulation-driven reverse transition in a one-dimensional hybrid halide. Nat. Commun. 15, 6678.
|
| [59] |
Zhang, F.S., Ge, W.N., Wang, C.L., Zheng, X.T., Wang, D.D., Zhang, X.C., Wang, X., Xue, X.Y., Qing, G.Y., 2021. Highly strong and solvent-resistant cellulose nanocrystal photonic films for optical coatings. ACS Appl. Mater. Interfaces 13, 17118-17128.
|
| [60] |
Zhang, W.T., Tian, H.M., Liu, T.C., Liu, H.R., Zhao, F.B., Li, X.M., Wang, C.H., Chen, X.L., Shao, J.Y., 2023. Chameleon-inspired active tunable structural color based on smart skin with multi-functions of structural color, sensing and actuation. Mater. Horiz. 10, 2024-2034.
|
| [61] |
Zhu, B.N., Johansen, V.E., Kamita, G., Guidetti, G., Bay, M.M., Parton, T.G., Frka-Petesic, B., Vignolini, S., 2020. Hyperspectral imaging of photonic cellulose nanocrystal films: structure of local defects and implications for self-assembly pathways. ACS Nano 14, 15361-15373.
|
| [62] |
Zuo, H., Zhang, L.Z., Xuan, H.X., Gu, S.J., Xu, X.X., Neisiany, R.E., Wu, Q.L., You, Z.W., 2024. Cement-inspired readily fabricated water-strengthened polymeric materials. Sci. China Chem. 67, 3458-3467.
|