Abstract
Pairs of linear chains – the end segment of one of each fixed at a surface – are analyzed for the relative probability of mutual contact formation between particularly specified segments i and j belonging to different chains within these pairs. Several positions are of general interest only, while other portray specific experimental conditions, e.g., the basic step in surface initiated Z‐RAFT polymerization (contact of the end of the free chain with the anchored segment of the fixed one). Contact probabilities are calculated for athermal cubic lattice chains by means of exact enumeration. Basic results are chain‐length dependences of shielding factors Kij in form of scaling laws and changes of size and shape properties of the involved molecules while approaching and penetration as functions of chain separation.
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