Since the advent of polymer-based 3D printing technology, the scientific community has directed great effort towards the development of new polymeric formulations that would allow applying this technique to various fields of application, ranging from materials science to tissue engineering. However, most of the available materials are nevertheless oil-based and cost-ineffective. This work presents a novel bio-based resin for stereolithographic DLP 3D printing formulated by mixing a photocurable polyester obtained from renewable resources (poly(1,3-propanediyl-co-glyceryl) itaconate-co-vanillate, PPGIV) with methacrylated citrate and itaconate crosslinkers (bis(HEMA) itaconate, BHI, and tris(HEMA) citrate, THC) and appropriate photopolymerization initiators, terminators and dyes. As a proof-of-concept, a photocurable ink is formulated with phosphorescent Ir(III) cyclometalated complexes and its potential applications have been demonstrated for both rigid and flexible structures.

中文翻译：

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用于数字光处理（DLP）3D打印的磷光生物基树脂

自从基于聚合物的3D打印技术问世以来，科学界一直在大力开发新的聚合物配方，以使该技术可以应用于从材料科学到组织工程的各种应用领域。但是，大多数可用材料仍然是油基的，而且成本低廉。这项工作礼物立体平版印刷DLP 3D一种新颖的生物基树脂印刷通过混合来自可再生资源（聚（1,3- propanediyl-获得的光固化性聚酯配制共-glyceryl）itaconate-共-香草酸酯，PPGIV）与甲基丙烯酸柠檬酸酯和衣康酸酯交联剂（双（HEMA）衣康酸酯，BHI和三（HEMA）柠檬酸酯，THC）和合适的光聚合引发剂，终止剂和染料。作为概念验证，一种光固化油墨是由磷光Ir（III）环金属化配合物配制而成的，并且已证明其在刚性和柔性结构中的潜在应用。