Second- and third-order nonlinear optical properties of bis-chalcone derivatives
作者:M. Sai Kiran、Benoy Anand、S. Siva Sankara Sai、G. Nageswara Rao
DOI:10.1016/j.jphotochem.2014.06.004
日期:2014.9
second- and third-order nonlinearoptical properties of these samples are studied using second harmonic generation and nanosecond open-aperture Z-scan methods. CP-POME has shown a very high second harmonic generation (SHG) efficiency (5.3 times that of urea). These molecules reveal a strong third-order nonlinear absorption (NLA) that is of optical limiting type, due to their peculiar D–π–A–π–D structure
双查尔酮衍生物:2,5-双(亚苄基)-环戊酮(CP-DBA),2,5-双(4-甲氧基-亚苄基)-环戊酮(CP-POME),2,5-双(4-异丙基)克莱森-施密特反应合成了-亚苄基)-环戊酮(CP-ISO)和2,5-双(肉桂基)-环戊酮(CP-CAL),并用FT-IR,1 H NMR,13进行了表征13 C NMR和质谱技术。使用二次谐波产生和纳秒开孔Z扫描方法研究了这些样品的二阶和三阶非线性光学性质。CP-POME已显示出很高的二次谐波生成(SHG)效率(是尿素的5.3倍)。这些分子由于其独特的D–π–A–π–D结构导致离域电子云的高度极化,因此显示出光学极限类型的强三阶非线性吸收(NLA)。CP-CAL表现出最高的NLA活性,β系数为1×10 -10 m / W。通过数值模拟,发现在所有样品的情况下,NLA的机理都是双光子吸收过程。
Diarylidenecyclopentanone derivatives as potent anti-inflammatory and anticancer agents
Cancer is often associated with chronic inflammation. In order to develop potential anticancer and anti-inflammatory agents a series of 26 diarylidenecyclopentanones (DACPs) Ia–Iv, II, III, and IV were synthesized. Five of the synthesized DACPs are novel (Ih, Ij, Ik, Is, and Iv), derivative Iv was characterized using single-crystal X-ray diffraction study. All the synthesized derivatives were tested
HOLOGRAM RECORDING COMPOSITION, HOLOGRAM RECORDING MEDIUM, DIFFRACTION OPTICAL ELEMENT, AND OPTICAL DEVICE, OPTICAL COMPONENT, AND IMAGE DISPLAY DEVICE IN WHICH DIFFRACTION OPTICAL ELEMENT IS USED
申请人:Sony Group Corporation
公开号:EP3896530A1
公开(公告)日:2021-10-20
To provide a hologram recording composition that can further improve diffraction characteristics and transparency of a hologram.
The present technology provides a hologram recording composition containing a heteropoly acid, a photopolymerizable monomer, a photopolymerization initiator, and a sensitizing dye having absorption in a visible light region in the presence of an acid. The present technology also provides a hologram recording medium including at least a photocurable resin layer containing a heteropoly acid, a photopolymerizable monomer, a photopolymerization initiator, and a sensitizing dye having absorption in a visible light region in the presence of an acid. Furthermore, the present technology also provides a diffraction optical element using the hologram recording medium. Moreover, the present technology also provides an optical device, an optical component, and an image display device using the diffraction optical element.
HOLOGRAM RECORDING COMPOSITION, HOLOGRAM RECORDING MEDIUM, DIFFRACTION OPTICAL ELEMENT, AND OPTICAL DEVICE, OPTICAL COMPONENT, AND IMAGE DISPLAY DEVICE USING DIFFRACTION OPTICAL ELEMENT
申请人:Sony Group Corporation
公开号:US20220013142A1
公开(公告)日:2022-01-13
To provide a hologram recording composition that can further improve diffraction characteristics and transparency of a hologram.
The present technology provides a hologram recording composition containing a heteropoly acid, a photopolymerizable monomer, a photopolymerization initiator, and a sensitizing dye having absorption in a visible light region in the presence of an acid. The present technology also provides a hologram recording medium including at least a photocurable resin layer containing a heteropoly acid, a photopolymerizable monomer, a photopolymerization initiator, and a sensitizing dye having absorption in a visible light region in the presence of an acid. Furthermore, the present technology also provides a diffraction optical element using the hologram recording medium. Moreover, the present technology also provides an optical device, an optical component, and an image display device using the diffraction optical element.
Ash of pomegranate peels (APP): A bio-waste heterogeneous catalyst for sustainable synthesis of α,α′-bis(substituted benzylidine)cycloalkanones and 2-arylidene-1-tetralones
作者:Rupesh C. Patil、Uttam P. Patil、Ashutosh A. Jagdale、Sachinkumar K. Shinde、Suresh S. Patil
DOI:10.1007/s11164-020-04160-5
日期:2020.7
Abstract α,α′-bis(substituted benzylidene)cycloalkanones were efficiently prepared from variously substituted aldehydes and cycloalkanones in water by using ash of pomegranate peels (APP) as a catalyst. The APP-catalyst was obtained from bio-waste by simple thermal treatment to dry peels of pomegranate fruit and formation of its active phase was confirmed by FT-IR, XRD, XRF, EDX, SEM, DSC-TGA and BET