Supramolecular Chemistry in Molten Sulfur: Preorganization Effects Leading to Marked Enhancement of Carbon Nitride Photoelectrochemistry
Supramolecular Chemistry in Molten Sulfur: Preorganization Effects Leading to Marked Enhancement of Carbon Nitride Photoelectrochemistry
复制标题
DOI：
10.1002/adfm.201502843
复制
发表时间：
2015-10
影响因子：
19
通讯作者：
Jingsan Xu;Shaowen Cao;T. Brenner;Xiaofei Yang;Jiaguo Yu;M. Antonietti;M. Shalom
中科院分区：
文献类型：
--
作者：
Jingsan Xu;Shaowen Cao;T. Brenner;Xiaofei Yang;Jiaguo Yu;M. Antonietti;M. Shalom
在这里，一种新的方法，用于提高氮化碳薄膜的光电化学性能，通过在熔融硫中的含苯基的单体的原位超分子驱动的预组织。对化学和物理性质的详细分析表明，熔融硫可以使生长纹理化，并诱导苯基更有效地整合到氮化碳电极中，从而导致延长的光吸收以及改善的导电性和更好的电荷转移。此外，光物理测量表明在光学带隙中形成了有利于激子分裂的子带。此外，新的能带可以介导空穴向电解质的转移，从而提高光氧化活性。利用高温溶剂作为聚合介质为氮化碳膜向用于各种应用的高效光活性材料的显著改进开辟了新的机会。
Here, a new method for enhancing the photoelectrochemical properties of carbon nitride thin films by in situ supramolecular‐driven preorganization of phenyl‐contained monomers in molten sulfur is reported. A detailed analysis of the chemical and photophysical properties suggests that the molten sulfur can texture the growth and induce more effective integration of phenyl groups into the carbon nitride electrodes, resulting in extended light absorption alongside with improved conductivity and better charge transfer. Furthermore, photophysical measurements indicate the formation of sub‐bands in the optical bandgap which is beneficial for exciton splitting. Moreover, the new bands can mediate hole transfer to the electrolyte, thus improving the photooxidation activity. The utilization of high temperature solvent as the polymerization medium opens new opportunities for the significant improvement of carbon nitride films toward an efficient photoactive material for various applications.