Ink‐free printing based on rewritable paper is an efficient and environmental friendly way to reuse paper, protect resources, and save energy for sustainable development of human society. Among various kinds of rewritable media, light responsive rewritable paper (LRP) is one of the most popular research areas due to its clean and favorable noncontact writing. Visible light is more suitable for LRP for its superior penetration and much less damages to organic molecules than UV light. However, visible‐light‐responsive rewritable paper (VLRP) has only limited successes so far. Herein, a VLRP is newly designed and fabricated based on photoinduced proton transfer (PPT) between photoacid and pH‐sensitive dyes. Success of it is highly benefited from systematical investigation and in‐depth understanding on the key influence factors, such as concentration‐induced undesired isomerization, temperature, humidity, and light intensity, on the PPT and its inverse process. As‐prepared VLRP shows long‐awaited properties, such as, high color contrast and resolution, appropriate legible time of prints, excellent reversibility (>100 cycles), easiness to achieve multicolor prints, and agreeing well with environmental concept of green printing. In addition, study of influence factors on PPT in this work, to some extent, may also help people understand complex photocycle process in biosystem.

中文翻译：

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光致酸与pH敏感染料之间的光诱导质子转移：可见光响应可重写纸的影响因素及其应用

基于可擦写纸张的无墨打印是一种有效且环保的方式，可以重复使用纸张，保护资源并节省能源，以实现人类社会的可持续发展。在各种可擦写介质中，光敏可擦写纸（LRP）由于其清洁且良好的非接触式书写而成为最受欢迎的研究领域之一。可见光比紫外线具有更强的穿透力，并且对有机分子的损害更少，因此更适合LRP。但是，到目前为止，可见光响应可写纸（VLRP）仅取得了有限的成功。在此，VLRP是根据光致酸性和pH敏感染料之间的光致质子转移（PPT）设计和制造的。系统的调查和对关键影响因素的深入了解极大地受益于它的成功，例如PPT及其逆过程上的浓度诱导的不希望有的异构化，温度，湿度和光强度。制备的VLRP具有期待已久的特性，例如高的色彩对比度和分辨率，适当的清晰打印时间，出色的可逆性（> 100个循环），易于实现多色打印以及与绿色打印的环境概念非常吻合。另外，在这项工作中研究影响PPT的因素在一定程度上也可能有助于人们了解生物系统中复杂的光循环过程。易于实现多色打印，并且与绿色打印的环保概念非常吻合。另外，在这项工作中研究影响PPT的因素在一定程度上也可能有助于人们了解生物系统中复杂的光循环过程。易于实现多色打印，并且与绿色打印的环保概念非常吻合。另外，在这项工作中研究影响PPT的因素在一定程度上也可能有助于人们了解生物系统中复杂的光循环过程。