Mohanalingam, K and Nethaji, M and Das, Puspendu Kumar (1996) Second harmonic generation in push-pull ethylenes: Influence of chirality and hydrogen bonding. In: Journal of Molecular Structure, 378 (3). pp. 177-188.
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The effect of chiral substituents and hydrogen bonding functional groups on the microscopic and macroscopic secondorder non-linearities in some donor-acceptor substituted ethylenes has been investigated. It appears that extensive intramolecular and intermolecular hydrogen bonding helps to improve both the microscopic hyperpolarizability $(\beta)$ as well as the powder second harmonic generation (SHG) efficiency in these compounds. The substitution of the chiral \alpha-methylbenzylamine donor guarantees a non-centrosymmetric structure. Cocrystallization with triphenylphosphine oxide (TPPO) does not appear to yield better SHG efficiency in the \alpha-methylbenzylamine substituted ethylene compound which has an extended hydrogen bonding network.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier.|
|Keywords:||Hydrogen bonding;Chirality;Second harmonic generation;Push-pull ethylene|
|Department/Centre:||Division of Chemical Sciences > Inorganic & Physical Chemistry|
|Date Deposited:||01 Dec 2006|
|Last Modified:||19 Sep 2010 04:33|
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