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Peter J. Collings

Researcher at University of Pennsylvania

Publications -  130
Citations -  8660

Peter J. Collings is an academic researcher from University of Pennsylvania. The author has contributed to research in topics: Liquid crystal & Chromonic. The author has an hindex of 37, co-authored 125 publications receiving 8248 citations. Previous affiliations of Peter J. Collings include United States Naval Research Laboratory & Swarthmore College.

Papers
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MonographDOI

Handbook of liquid crystals

John W. Goodby, +5 more
TL;DR: In this article, the basic principles of both low and high-molecular weight materials, as well as the synthesis, characterization, modification, and applications of all types of liquid crystals are discussed.
Book

Introduction to Liquid Crystals: Chemistry and Physics

Peter J. Collings, +1 more
TL;DR: In this paper, the essential elements of liquid crystal science are introduced and explained from the perspectives of both the chemist and physicist from the perspective of liquid crystals, including discussion of how liquid crystals have been utilized for innovative and important applications.
Journal ArticleDOI

Porphyrin Assemblies On DNA As Studied By A Resonance Light-Scattering Technique

Robert F. Pasternack, +4 more
- 01 Jun 1993 - 
TL;DR: In this paper, a light-scattering experimental approach is described for detecting such extended aggregates of chomophores in which the radiation used is within an absorption maximum, specifically in the porphyrin Soret absorption region.
Journal ArticleDOI

Resonance light scattering : a new technique for studying chromophore aggregation

Robert F. Pasternack, +1 more
- 18 Aug 1995 - 
TL;DR: Resonance light scattering is shown to be a sensitive and selective method for studying electronically coupled chromophore arrays and the approach is illustrated with several examples drawn from porphyrin and chlorin chemistry.
Journal ArticleDOI

Premelting at Defects within Bulk Colloidal Crystals

Ahmed Alsayed, +9 more
- 10 Oct 2006 - 
TL;DR: Observations of premelting at grain boundaries and dislocations within bulk colloidal crystals using real-time video microscopy suggest that interfacial free energy is the crucial parameter for premelts in colloidal and atomic-scale crystals.