Three good starting points for you:
To connect with corporate communications professionals, check out the 2017 International Association of Business Communicators World Conference in Washington, DC, in June: http://wc.iabc.com/
To connect with CSR professionals, check out the 2017 International Corporate Citizenship Conference in Boston in March: http://ccc.bc.edu/index.cfm?pageId=476
To connect with public relations professionals, check out the Public Relations Society of America 2017 International Conference in Boston in October: http://apps.prsa.org/Conferences/InternationalConference/index.html
Good luck and please let me know if you need more assistance.
Sustainable Brands Conference, SDAMA's Cause Conference, Conscious Capitalism Conference, BSR Conference, Boston College Center for Corporate Citizenship's International Corporate Citizenship Conference, Points of Light’s Conference on Volunteering and Service, Charities@Work.