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%20%20%20%20A%20New%20Photoremovable%20Protecting%20Group%20Containing%202-Methyl-1,4-Naphthoquinone:%20Steady%20State%20and%20Transient%20Spectroscopic%20Studies
Research article
  

A New Photoremovable Protecting Group Containing 2-Methyl-1,4-Naphthoquinone: Steady State and Transient Spectroscopic Studies


I. Openda, M. Ebienge, H. Futi, M.B. Mbala, B. P. Ngoy,

Département de Chimie, Faculté des Sciences, Université de Kinshasa, BP 190 Kinshasa XI, Democratic Republic of Congo.


Corresponding author :

Bokolombe Pitchou Ngoy,
Tel.: +243816780577,
Email:

Received: February 12, 2015,   Accepted: March 24, 2015,   Published:


Abstract:

The 2-methyl-1, 4-naphthoquinone moiety has been proposed as a photoremovable protecting group when substituted with carboxylate in different solvents upon irradiation. Picoseconds pump-probe investigations in different solvents afforded the rate constants of intersystem crossing from singlet to triplet to be around 1011 s-1 and the lifetime of the triplet state was about 0.7 ns in methanol and 0.12 s in the mixture water-acetonitrile.


Keywords: Pump-probe spectroscopy, Photoremovable protecting group, Steady state.


Citation:

Bokolombe Pitchou Ngoy. et al.. (2015) A New Photoremovable Protecting Group Containing 2-Methyl-1,4-Naphthoquinone: Steady State and Transient Spectroscopic Studies. j. of Physical and Chemical Sciences.V2I4. DOI: 10.15297/JPCS.V2I4.02


Copyright:

© 2015 Bokolombe Pitchou Ngoy. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


      
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      Journal of Physical and Chemical Sciences