Photoresponsive Hydrogel Friction

Photoresponsive hydrogels are an emerging class of stimuli-responsive materials that exhibit changes in physical or chemical properties in response to light. Previous investigations have leveraged photothermal mechanisms to achieve reversible changes in hydrogel friction, although few have focused on photochemical means. To date, the tribological properties of photoswitchable hydrogels (e.g., friction and lubrication) have remained underexplored. In this work, we incorporated photoresponsive methoxy-spiropyran-methacrylate monomers (methoxy-SP-MA) into a hydrogel network to form a copolymerized system of poly(N-isopropylacrylamide-co-2-acrylamido-2-methylpropane sulfonic acid-co-methoxy-spiropyran-methacrylate) (p(NIPAAm-co-AMPS-co-SP)). We demonstrated repeatable photoresponsive changes to swelling, friction, and stiffness over three light cycles. Our findings suggest that volume changes driven by the decreased hydrophilicity of the methoxy-SP-MA upon light irradiation are responsible ..., , , # Photoresponsive Hydrogel Friction

[https://doi.org/10.5061/dryad.280gb5mzv](https://doi.org/10.5061/dryad.280gb5mzv)

## Description of the data and file structure

Data from peer-reviewed article:

Title: Photoresponsive Hydrogel Friction

Journal: Soft Matter

Authors: Allison L. Chau*, Kseniia M. Karnaukh*, Ian Maskiewicz, Javier Read de Alaniz, and Angela A. Pitenis

*co-first author

Corresponding author: Javier Read de Alaniz ([[e-mail]](mailto:[e-mail])), Angela Pitenis ([[e-mail]](mailto:[e-mail]))

### Files and variables

#### File: 2024\_ChauKarnaukh\_SoftMatter\_Dataset.zip

**Description:** 

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File List

A) Fig1b.csv

B) Fig2a.csv

C) Fig2b.csv

D) Fig3a.csv

E) Fig3b.csv

F) Fig4b_side_DSC_13253_0min.jpg

G) Fig4b_side_DSC_13264_1min.jpg

H) Fig4b_side_DSC_13276_2min.jpg

I) Fig4b_side_DSC_13288_3min.jpg

J) Fig4b_side_DSC_13312_5min.jpg...

光响应水凝胶（photoresponsive hydrogels）是一类新兴的刺激响应型材料，可响应光照并发生物理或化学性质变化。既往研究多利用光热机制实现水凝胶摩擦力的可逆调控，但极少有研究聚焦于光化学手段。截至目前，光开关型水凝胶（photoswitchable hydrogels）的摩擦学性能（如摩擦力与润滑性能）仍有待深入探索。

本研究将光响应性甲氧基螺吡喃甲基丙烯酸酯单体（methoxy-spiropyran-methacrylate monomers，methoxy-SP-MA）引入水凝胶网络，构建了聚(N-异丙基丙烯酰胺-co-2-丙烯酰胺-2-甲基丙磺酸-co-甲氧基螺吡喃甲基丙烯酸酯)（p(NIPAAm-co-AMPS-co-SP)）共聚体系。我们验证了该体系在三次光照循环中，溶胀度、摩擦力与刚度均可发生可重复的光响应变化。研究结果表明，光照下methoxy-SP-MA的亲水性降低所驱动的体积变化是导致上述性能变化的原因……

# 光响应水凝胶摩擦力
[https://doi.org/10.5061/dryad.280gb5mzv](https://doi.org/10.5061/dryad.280gb5mzv)

## 数据与文件结构说明
本数据集来自同行评议学术论文：
### 论文信息
标题：光响应水凝胶摩擦力
期刊：《软物质》（Soft Matter）
作者：Allison L. Chau*、Kseniia M. Karnaukh*、Ian Maskiewicz、Javier Read de Alaniz 与 Angela A. Pitenis
* 共同第一作者
通讯作者：Javier Read de Alaniz（邮箱：[[e-mail]](mailto:[e-mail])）、Angela Pitenis（邮箱：[[e-mail]](mailto:[e-mail])）

### 文件与变量
#### 文件：2024_ChauKarnaukh_SoftMatter_Dataset.zip
**文件说明：**
-------------------------------------------------------------------------------------------
文件列表：
A) Fig1b.csv
B) Fig2a.csv
C) Fig2b.csv
D) Fig3a.csv
E) Fig3b.csv
F) Fig4b_side_DSC_13253_0min.jpg
G) Fig4b_side_DSC_13264_1min.jpg
H) Fig4b_side_DSC_13276_2min.jpg
I) Fig4b_side_DSC_13288_3min.jpg
J) Fig4b_side_DSC_13312_5min.jpg...