Reversible Mechanochromism of a Luminescent Elastomer

被引：29

作者：

Bao, Suping ^{[1
]}

Li, Jianhua ^{[1
]}

Lee, Ka I. ^{[1
]}

Shao, Sijie ^{[1
]}

Hao, Jianhua ^{[2
]}

Fei, Bin ^{[1
]}

Xin, John H. ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Inst Text & Clothing, Nanotechnol Ctr, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 11期

关键词：

mechanochromism; luminescence; elastomer; X-ray diffraction; stress sensor; BIS(BENZOXAZOLYL)STILBENE; EMISSION; COLOR;

D O I：

10.1021/am4013648

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel mechanochromic elastomer was manufactured by doping bis(benzoxazolyl)stibene (BBS) into a thermoplastic polyurethane. Both solution casting and melt compounding approaches were tried with a range of BBS concentrations, and an optimal concentration of 0.5% was selected to investigate the mechanochromic mechanism in detail. When the blend film was stretched up to 100%, its emission peaks at 475 and 413 nm changed in intensity ratio from 6.3 to 1.8. When it was released, both the film size and emission peaks largely recovered. By a short annealing at 120 degrees C, their full recovery was achieved. Its reversion mechanism was proposed and proved by X-ray diffraction. In comparison to previous mechanochromic materials, this smart elastomer is easy to prepare, highly sensitive to stress, facilely renewable in usage, and totally based on biocompatible materials, having potential applications like stress sensors, intelligent devices, and alarming packages.

引用

页码：4625 / 4631

页数：7

共 18 条

[1]

Chen YL, 2012, NAT CHEM, V4, P559, DOI [10.1038/nchem.1358, 10.1038/NCHEM.1358]

[2] Deformation-induced color changes in melt-processed photoluminescent polymer blends [J].

Crenshaw, BR ;

Weder, C .

CHEMISTRY OF MATERIALS, 2003, 15 (25) :4717-4724

[3] Self-assessing photoluminescent polyurethanes [J].

Crenshaw, Brent R. ;

Weder, Christoph .

MACROMOLECULES, 2006, 39 (26) :9581-9589

[4] Force-induced activation of covalent bonds in mechanoresponsive polymeric materials [J].

Davis, Douglas A. ;

Hamilton, Andrew ;

Yang, Jinglei ;

Cremar, Lee D. ;

Van Gough, Dara ;

Potisek, Stephanie L. ;

Ong, Mitchell T. ;

Braun, Paul V. ;

Martinez, Todd J. ;

White, Scott R. ;

Moore, Jeffrey S. ;

Sottos, Nancy R. .

NATURE, 2009, 459 (7243) :68-72

[5]

Fakirov S., 2005, HDB CONDENSATION THE

[6] Enhanced fluorescence and thermal sensitivity of polyethylenimine modified by Michael addition [J].

Fei, Bin ;

Yang, Zongyue ;

Shao, Sijie ;

Wan, Shengbiao ;

Xin, John H. .

POLYMER, 2010, 51 (08) :1845-1852

[7] Luminescent Mechanochromic Sensors Based on Poly(vinylidene fluoride) and Excimer-Forming p-Phenylene Vinylene Dyes [J].

Lott, Joseph ;

Weder, Christoph .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2010, 211 (01) :28-34

[8] Reversible Switching of the Emission of Diphenyldibenzofulvenes by Thermal and Mechanical Stimuli [J].

Luo, Xiaoliang ;

Li, Jienian ;

Li, Cuihong ;

Heng, Liping ;

Dong, Yong Qiang ;

Liu, Zhengping ;

Bo, Zhishan ;

Tang, Ben Zhong .

ADVANCED MATERIALS, 2011, 23 (29) :3261-+

[9] Albumin and fibrinogen adsorption on PU-PHEMA surfaces [J].

Martins, MCL ;

Wang, D ;

Ji, J ;

Feng, L ;

Barbosa, MA .

BIOMATERIALS, 2003, 24 (12) :2067-2076

[10] FT-IR and XPS studies of polyurethane-urea-imide coatings [J].

Mishra, AK ;

Chattopadhyay, DK ;

Sreedhar, B ;

Raju, KVSN .

PROGRESS IN ORGANIC COATINGS, 2006, 55 (03) :231-243

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