引用本文:
任君, 王世敏, 吴立方, 方章建, 吴颉, 许祖勋. 噻唑类二阶非线性光学活性分子的合成与性能[J]. 应用化学,
2008, 25(5): 505-509.
Citation: REN Jun, Wang Shi-Min, WU Li-Fang, FANG Zhang-Jian, WU Jie, XU Zu-Xun. Synthesis and Properties of Novel NLO Molecules with Structure of Thiazole and Schiff Base[J]. Chinese Journal of Applied Chemistry, 2008, 25(5): 505-509.
Citation: REN Jun, Wang Shi-Min, WU Li-Fang, FANG Zhang-Jian, WU Jie, XU Zu-Xun. Synthesis and Properties of Novel NLO Molecules with Structure of Thiazole and Schiff Base[J]. Chinese Journal of Applied Chemistry, 2008, 25(5): 505-509.
噻唑类二阶非线性光学活性分子的合成与性能
摘要:
合成了4个以噻唑环为母体、含有Schiff碱结构的新型二阶非线性光学(NLO)活性分子,用红外光谱、紫外光谱、核磁共振光谱和元素分析确定了分子结构,用溶致变色法确定了二阶极化率。分子中噻唑五元杂环和Schiff碱结构提高了NLO分子的热稳定性和透明性,噻唑的共轭芳香杂环非中心对称结构连接多个供、吸电子基团,提高了分子的二阶非线性系数。结果表明,这些NLO分子的紫外吸收波长在350~415 nm之间,裂解温度均在300℃左右,二阶非线性光学系数β值达到1×10-30 esu数量级,初步实现了"二阶非线性-透明性-热稳定性"综合性能优化的目标。
English
Synthesis and Properties of Novel NLO Molecules with Structure of Thiazole and Schiff Base
Abstract:
Four new second-order nonlinear optical (NLO) molecules derivated from thiazole and containing the structure of Schiff base were synthesized.These target molecules were confirmed by IR,UV,NMR and elemental analysis,and 2nd-order polarizability of those molecules were determined by a solvatochromic method.The structure of a five-membered heterocyclic ring and Schiff base improved the thermally stability and transparency,and the nonsymmetric conformation of thiazloe could link many donors and acceptors and thus improves the β value.Experimental results show that the maximum absorption wavelength was 350~415 nm,the decomposition temperature was about 300℃,and the β value was 1×10-30 esu,indicating a good nonlinearity-transparency-thermally stable comprehensive optimization has been achieved.
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Key words:
- thiazole
- / second-order nonlinear optical
- / synthesis and properties
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