Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Nanjing Tech University , Nanjing, 211816, China.
ACS Appl Mater Interfaces. 2017 Sep 27;9(38):33029-33040. doi: 10.1021/acsami.7b10585. Epub 2017 Sep 12.
Recently, graphene-based materials have become well-known nonlinear optical materials for the potential application of laser protection. Two new graphene oxide-platinum complex (GO-Pt) hybrid materials (GO-Pt-1, GO-Pt-2) have been fabricated through covalent modification and electrostatic adsorption of different Pt complexes with GO. The structural and photophysical properties of the resultant hybrid materials were studied. The nonlinear optical properties and optical power limiting (OPL) performance of Pt complexes, GO, and GO-Pt hybrid materials were investigated by using Z-scan measurements at 532 nm. At the same transmittance, the results illustrate that functionalization of GO makes GO-Pt hybrid materials possess better nonlinear optical properties and OPL performance than individual Pt complexes and GO due to a combination of nonlinear scattering, nonlinear absorption, and photoinduced electron and energy transfer between GO and Pt complex moieties. Furthermore, the nonlinear optics and OPL performance of GO-Pt-2 are better than those of GO-Pt-1, due to not only the excellent optical limiting of Pt-2 and more molecules per area of GO but also the way of combination of Pt-2 and GO.
最近，基于石墨烯的材料因其在激光防护方面的潜在应用而成为知名的非线性光学材料。通过共价修饰和不同 Pt 配合物与 GO 的静电吸附，制备了两种新型氧化石墨烯-铂配合物（GO-Pt-1、GO-Pt-2）杂化材料。研究了所得杂化材料的结构和光物理性质。采用 532nm 的 Z 扫描测量研究了 Pt 配合物、GO 和 GO-Pt 杂化材料的非线性光学性质和光限幅（OPL）性能。在相同的透过率下，结果表明，由于 GO 和 Pt 配合物部分之间的非线性散射、非线性吸收以及光致电子和能量转移的结合，GO 的功能化使得 GO-Pt 杂化材料具有比单个 Pt 配合物和 GO 更好的非线性光学性质和 OPL 性能。此外，由于 Pt-2 的优异光限制和 GO 每单位面积的更多分子，以及 Pt-2 和 GO 的结合方式，GO-Pt-2 的非线性光学和 OPL 性能优于 GO-Pt-1。
