Preliminary study of the nonlinear optical properties of 4-amino-4'-nitrodiphenyl sulfide

Abstract

X 104 M'1 cm'1. Again the excited electron preferentially resides in the bpm moiety, and the localized picture, over the time scale of the experiment, is further enhanced.Acknowledgment. The bulk of the experiments reported were perforemd at the Center for Fast Kinetics Research (CFKR). The CFKR is supported jointly by the Biomedical Research Technology Program of the Division of Research Resources of NIH (RR 00886) and by the University of Texas at Austin. A British Council Fellowship and the continuing support of the Yarmouk University Research Fund is gratefully acknolwedged (T. A.).

Preparation and Crystal Structures of 4-(4′-Pyridylthio)-1-methylpyridinium Salts: Assembly of a Donor–Acceptor-Type Molecule Containing a Sulfide Bridge

“…for an incident energy of 1.17 eV (l=1064 nm). The calculations showed that the contributing intramolecular charge-transfer direction was from the sulfur to the pyridinium ring, similar to the case of ANDS (16). The estimated b value of the present cation is comparable to those in SHG active aromatic sulfides such as ANDS (16) investigated as possible candidates for SHG materials.…”

“…Therefore, the so-called salt methodology to realize noncentrosymmetric molecular arrangement (10,11) turned out to be ineffective for the present cation. To realize noncentrosymmetric structures for the present cation, it may further be necessary to introduce a hydrogen-bonding substituent such as a hydroxyl group into the molecule, because hydrogen bonding is known to be an efficient means to realize polar structures in many SHG-active materials, such as in aminopyridinium benzenesulfonate salts (9,24) and ANDS (16).…”

“…The present cation, containing both donor and acceptor moieties, is a possible candidate for SHG materials. An example of 4-amino-4 0 -nitrodiphenylsulfide (ANDS) is known as a sulfur-bridged SHGactive compound, which is represented as (donor)-S-(acceptor) (16). The donor Á Á Á acceptor intermolecular interactions, if any, may be advantageous for realizing noncentrosymmetric molecular arrangements in the solid state.…”

A comparative study on the nonlinear optical properties of diphenyl ether and diphenyl sulfide compounds

“…ANDS has a similar molecular structure. 2 Thus the whole molecular conjugation system is disturbed at the O atom and this rules out any contribution to b by charge transfer interaction between the NH 2 and NO 2 substituted moieties of the molecule. Thus the intramolecular charge transfer should be considered as two parts: one is O (S)ANO 2 and the other is NH 2 AO (S).…”

“…4-Aminophenyl 4'-nitrophenyl sul®de (ANDS) has a large delocalized p-electron molecular system and was reported as an organic nonlinear optical material by Abdel-Halim. 2 We also studied the NLO properties and the crystal growth habit of ANDS. 3 ANDS is a representative diphenyl sul®de compound and we investigated some other diphenyl sul®de derivatives in the present work.…”