Coumarins, whether natural products or synthetic, have aroused a growing interest from the scientific community in last decades due to their very significant pharmacological activity and due to their excellent photophysical and spectroscopic properties. The design and synthesis of new efficient organic photosensitizers for DSSC's, considered promising photovoltaic devices, is of utmost importance to be used in electric energy production from solar irradiation. On the other hand, compounds with a similar synthetic strategy are essential to develop new fluorescent labels used on very sensitive analytical techniques to detect and track biomolecules in very important areas, such as cellular biology, medicine, medicinal chemistry and environmental science.

In this work, using 7-(diethylamino)-4-methyl-3-vinylcoumarin as an intermediate, we developed a simple, low cost and efficient synthetic strategy to produce new promising photosensitizers for DSSCs and fluorescent labels for biomolecules.

香豆素，无论是天然产物还是合成产物，由于其非常重要的药理活性以及出色的光物理和光谱性质，在过去的几十年中引起了科学界的日益增长的兴趣。用于DSSC的新型高效有机光敏剂的设计和合成，被认为是很有前途的光伏设备，对于太阳能辐照产生的电能至关重要。另一方面，具有相似合成策略的化合物对于开发用于非常敏感的分析技术的新荧光标记必不可少，该非常敏感的分析技术可用于检测和跟踪非常重要的领域中的生物分子，例如细胞生物学，医学，药物化学和环境科学。

在这项工作中，我们使用7-（二乙氨基）-4-甲基-3-乙烯基香豆素作为中间体，开发了一种简单，低成本和有效的合成策略，以生产用于DSSC的新型有前景的光敏剂和用于生物分子的荧光标记。