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Chapter IX General Conclusion
molecular layers in lattice of KDP. This technique, however, establishes
the operation of replica molding at molecular scale.
The summary of the study carried out by the present author on pure
and amino acids, viz., L-histidine, DL-methionine and L-threonine, doped
KDP crystals is presented hereby.
1. The solubility of amino acids doped KDP crystals was more than the
pure KDP crystals at any particular temperature.
2. The doping of amino acids had affected the nucleation process, which
was found by increase in the value of induction period for amino acids
doped systems.
3. It was found that the nucleation parameters, viz., interfacial tension,
energy of formation of critical nucleus and radius of critical nucleus,
decreased as super-saturation increased.
4. The values of nucleation parameters were larger for amino acids doped
KDP crystals than the pure KDP crystals. This might be due to
formation of specks of amino acids earlier than KDP resulting into
accelerated nucleation.
5. CHN analysis and Paper Chromatography confirmed the presence of
amino acids in KDP crystals.
6. The FT-IR spectra indicated the presence of C=O stretching, N-H
symmetric and asymmetric stretching vibrations, which were absent in
pure KDP crystals. This provided indication of presence of amino acids
in KDP crystals.
7. The frequency of absorption related to O=P-OH symmetric stretching,
O-P-OH symmetric stretching and O=P-OH bending were altered in the
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