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Solvent Effect on the Third-Order Nonlinear Optical Properties of α- and β-Tertbutyl Phenoxy-Substituted Tin(IV) Chloride Phthalocyanines
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1021/acs.jpca.7b07349 Marcel Louzada 1 , Jonathan Britton 1 , Tebello Nyokong 1 , Samson Khene 1
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2017-09-19 00:00:00 , DOI: 10.1021/acs.jpca.7b07349 Marcel Louzada 1 , Jonathan Britton 1 , Tebello Nyokong 1 , Samson Khene 1
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This paper investigates the third-order nonlinear optical properties of 4α-(4-tert-butylphenoxy) phthalocyaninato dichlorotin(IV) (α-SnOtBpPc) and 4β-(4-tert-butylphenoxy) phthalocyaninato dichlorotin(IV) (β-SnOtBpPc) in different organic solvents. The third-order susceptibilities of α-SnOtBpPc and β-SnOtBpPc are reported in different solvents, using Z-scan techniques with 10 ns laser pulses at 532 nm. Their nonlinear absorption coefficient and absorption cross sections were also determined. The molecular imaginary components of the second-order hyperpolarizability Im[γ] of α-SnOtBpPc and β-SnOtBpPc were found to be 2.60 × 10–31 and 2.94 × 10–31 esu (tetrahydrofuran), 2.12 × 10–31 and 2.54 × 10–31 esu (chloroform), 3.06 × 10–31 and 2.54 × 10–31 esu (dichloromethane), and 1.27 × 10–31 and 1.50 × 10–31 esu (toluene), respectively. This study found that substitution at the α position has an effect of lowering the two-photon (2PA) cross section value for α-SnOtBpPc compared to that for β-SnOtBpPc, with values of 64.30 and 456.65 GM, respectively. The large 2PA cross section observed in β-SnOtBpPc is attributed to the decreased energy difference between the virtual state and the LUMO.
中文翻译：
溶剂对α-和β-叔丁基苯氧基取代的氯化锡酞菁三阶非线性光学性质的影响
本文研究的三阶非线性光学性质的4α-（4-叔丁基苯氧基）二氯化锡酞菁（IV）（α-SnOtBpPc）和4β-（4-叔丁基苯氧基）二氯化锡酞菁（IV）（β-SnOtBpPc）在不同的有机溶剂中。使用Z扫描技术在532 nm波长下使用10 ns激光脉冲，报告了在不同溶剂中α-SnOtBpPc和β-SnOtBpPc的三阶磁化率。还确定了它们的非线性吸收系数和吸收截面。发现α-SnOtBpPc和β-SnOtBpPc的二阶超极化率Im [γ]的分子虚构成分为2.60×10 –31和2.94×10 –31 esu（四氢呋喃），2.12×10 –31和2.54× 10分别为–31 esu（氯仿），3.06×10 –31和2.54×10 –31 esu（二氯甲烷），以及1.27×10 –31和1.50×10 –31 esu（甲苯）。这项研究发现，与β-SnOtBpPc相比，α-SnOtBpPc在α位置的取代具有降低双光子（2PA）横截面值的效果，分别为64.30和456.65 GM。在β-SnOtBpPc中观察到的较大的2PA横截面归因于虚拟状态和LUMO之间的能量差减小。
更新日期：2017-09-19
中文翻译：
溶剂对α-和β-叔丁基苯氧基取代的氯化锡酞菁三阶非线性光学性质的影响
本文研究的三阶非线性光学性质的4α-（4-叔丁基苯氧基）二氯化锡酞菁（IV）（α-SnOtBpPc）和4β-（4-叔丁基苯氧基）二氯化锡酞菁（IV）（β-SnOtBpPc）在不同的有机溶剂中。使用Z扫描技术在532 nm波长下使用10 ns激光脉冲，报告了在不同溶剂中α-SnOtBpPc和β-SnOtBpPc的三阶磁化率。还确定了它们的非线性吸收系数和吸收截面。发现α-SnOtBpPc和β-SnOtBpPc的二阶超极化率Im [γ]的分子虚构成分为2.60×10 –31和2.94×10 –31 esu（四氢呋喃），2.12×10 –31和2.54× 10分别为–31 esu（氯仿），3.06×10 –31和2.54×10 –31 esu（二氯甲烷），以及1.27×10 –31和1.50×10 –31 esu（甲苯）。这项研究发现，与β-SnOtBpPc相比，α-SnOtBpPc在α位置的取代具有降低双光子（2PA）横截面值的效果，分别为64.30和456.65 GM。在β-SnOtBpPc中观察到的较大的2PA横截面归因于虚拟状态和LUMO之间的能量差减小。
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