CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China.
School of Chemistry and Chemical Engineering, State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing, Jiangsu, 210093, China.
Nat Commun. 2017 Oct 17;8(1):1003. doi: 10.1038/s41467-017-01101-6.
Most known chemiluminescence (CL) reactions exhibit flash-type light emission. Great efforts have been devoted to the development of CL systems that emit light with high intensity and long-lasting time. However, a long-lasting CL system that can last for hundreds of hours is yet-to-be-demonstrated. Here we show firefly-mimicking intensive and long-lasting CL hydrogels consisting of chitosan, CL reagent N-(4-aminobutyl)-N-ethylisoluminol (ABEI) and catalyst Co. The light emission is even visible to naked eyes and lasts for over 150 h when the hydrogels are mixed with HO. This is attributed to slow-diffusion-controlled heterogeneous catalysis. Co located at the skeleton of the hydrogels as an active site catalyzes the decomposition of slowly diffusing HO, followed by the reaction with ABEI to generate intensive and long-lasting CL. This mimics firefly bioluminescence system in terms of intensity, duration time and catalytic characteristic, which is of potential applications in cold light sources, bioassays, biosensors and biological imaging.Great efforts have been devoted to the development of chemiluminescence systems that emit light with high intensity over long periods of time. Here the authors show, firefly-mimicking intensive and long-lasting chemiluminescence hydrogels consisting of chitosan, N-(4-aminobutyl)-N-ethylisoluminol (ABEI) and catalyst Co.
大多数已知的化学发光（CL）反应表现为闪光型发光。人们致力于开发高强度和长持续时间的 CL 系统。然而，能够持续数百小时的长持续 CL 系统尚未得到证明。在这里，我们展示了由壳聚糖、CL 试剂 N-(4-氨基丁基)-N-乙基异鲁米诺（ABEI）和催化剂 Co 组成的萤火虫模拟的高强度和长持续时间的 CL 水凝胶。当水凝胶与 HO 混合时，发光甚至可以用肉眼看到，持续超过 150 小时。这归因于慢扩散控制的多相催化。Co 位于水凝胶的骨架中作为活性位点，催化缓慢扩散的 HO 的分解，然后与 ABEI 反应生成高强度和长持续时间的 CL。这在强度、持续时间和催化特性方面模拟了萤火虫生物发光系统，在冷光源、生物测定、生物传感器和生物成像方面具有潜在的应用。人们致力于开发高强度和长持续时间的 CL 系统。在这里，作者展示了由壳聚糖、N-(4-氨基丁基)-N-乙基异鲁米诺（ABEI）和催化剂 Co 组成的萤火虫模拟的高强度和长持续时间的 CL 水凝胶。
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