TY - JOUR
T1 - Shape matters
T2 - A gold nanoparticle enabled shape memory polymer triggered by laser irradiation
AU - Xiao, Zhiwei
AU - Wu, Qiang
AU - Luo, Sida
AU - Zhang, Chuck
AU - Baur, Jeffery
AU - Justice, Ryan
AU - Liu, Tao
PY - 2013/4
Y1 - 2013/4
N2 - With incorporation of gold nanoparticles, i.e., nanorods (AuNR) and nanospheres (AuNS), into a polyurethane-based shape-memory polymer (SMP) EG-72D matrix, SMP nanocomposite films capable of being remotely triggered by low-power laser are fabricated and characterized using UV-vis-NIR spectroscopy, X-ray scattering, and dynamic mechanical analysis (DMA). It is demonstrated that, with incorporation of very low concentration of gold nanorods (≈0.1 wt%), the mechanically programmed EG-72D/AuNR nanocomposite presents rapid response to low power laser irradiation (785 nm, ≈10 mW). Comparative studies on the laser irradiation response of EG-72D/AuNS and EG-72D/AuNR nanocomposite films suggest that AuNRs have significantly higher photothermal conversion efficiency than AuNS and on-resonance laser irradiation, matching the wavelength of the incident laser with the longitudinal plasmon resonance of AuNR, is necessary to induce the fast response of gold nanoparticle enabled SMP nanocomposites.
AB - With incorporation of gold nanoparticles, i.e., nanorods (AuNR) and nanospheres (AuNS), into a polyurethane-based shape-memory polymer (SMP) EG-72D matrix, SMP nanocomposite films capable of being remotely triggered by low-power laser are fabricated and characterized using UV-vis-NIR spectroscopy, X-ray scattering, and dynamic mechanical analysis (DMA). It is demonstrated that, with incorporation of very low concentration of gold nanorods (≈0.1 wt%), the mechanically programmed EG-72D/AuNR nanocomposite presents rapid response to low power laser irradiation (785 nm, ≈10 mW). Comparative studies on the laser irradiation response of EG-72D/AuNS and EG-72D/AuNR nanocomposite films suggest that AuNRs have significantly higher photothermal conversion efficiency than AuNS and on-resonance laser irradiation, matching the wavelength of the incident laser with the longitudinal plasmon resonance of AuNR, is necessary to induce the fast response of gold nanoparticle enabled SMP nanocomposites.
KW - gold nanoparticles
KW - laser activation
KW - nanocomposites
KW - shape-memory polymers
KW - structure-property relationships
UR - https://www.scopus.com/pages/publications/84876726974
U2 - 10.1002/ppsc.201200088
DO - 10.1002/ppsc.201200088
M3 - 文章
AN - SCOPUS:84876726974
SN - 0934-0866
VL - 30
SP - 338
EP - 345
JO - Particle and Particle Systems Characterization
JF - Particle and Particle Systems Characterization
IS - 4
ER -