title: Urea-based constructs readily amplify and attenuate nonlinear optical activity in response to H-bonding and anion recognition.
abstract: Urea-based molecular constructs are shown for the first time to be nonlinear optically (NLO) active in solution. We demonstrate self-assembly triggered large amplification and specific anion recognition driven attenuation of the NLO activity. This orthogonal modulation along with an excellent nonlinearity-transparency trade-off makes them attractive NLO probes for studies related to weak self-assembly and anion transportation by second harmonic microscopy.
authors.affiliation: Supramolecular & Material Chemistry Lab, School of Physical Sciences, JNU, New Delhi, 110067, India.
authors.forename: Deepak
authors.initials: D
authors.lastname: Asthana
authors.forename: Ravindra
authors.initials: R
authors.lastname: Pandey
authors.forename: Pritam
authors.initials: P
authors.lastname: Mukhopadhyay